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  • VIPER16HN图
  • 深圳市高捷芯城科技有限公司

     该会员已使用本站11年以上
  • VIPER16HN 现货库存
  • 数量5098 
  • 厂家ST(意法半导体) 
  • 封装DIP-7 
  • 批号23+ 
  • 百分百原装正品,可原型号开票
  • QQ:3007977934QQ:3007977934 复制
    QQ:3007947087QQ:3007947087 复制
  • 0755-83062789 QQ:3007977934QQ:3007947087
  • VIPER16HN图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • VIPER16HN 现货库存
  • 数量26800 
  • 厂家ST 
  • 封装22+ 
  • 批号DIP 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:1435424310QQ:1435424310 复制
  • 0755-84507451 QQ:1435424310
  • VIPER16HN图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • VIPER16HN 现货库存
  • 数量18573 
  • 厂家ST 
  • 封装DIP 
  • 批号 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:2881512844QQ:2881512844 复制
  • 075584507705 QQ:2881512844
  • VIPER16HN图
  • 深圳市广百利电子有限公司

     该会员已使用本站6年以上
  • VIPER16HN 现货库存
  • 数量18500 
  • 厂家ST(意法) 
  • 封装 
  • 批号23+ 
  • ★★全网低价,原装原包★★
  • QQ:1483430049QQ:1483430049 复制
  • 0755-83235525 QQ:1483430049
  • VIPER16HN图
  • 深圳市英德州科技有限公司

     该会员已使用本站2年以上
  • VIPER16HN
  • 数量30000 
  • 厂家ST(意法) 
  • 封装 
  • 批号1年内 
  • 原厂渠道 正品保障 长期供应
  • QQ:2355734291QQ:2355734291 复制
  • -0755-88604592 QQ:2355734291
  • VIPER16HN图
  • 集好芯城

     该会员已使用本站13年以上
  • VIPER16HN
  • 数量13208 
  • 厂家ST 
  • 封装DIP-7 
  • 批号最新批次 
  • 原装原厂 现货现卖
  • QQ:3008092965QQ:3008092965 复制
    QQ:3008092965QQ:3008092965 复制
  • 0755-83239307 QQ:3008092965QQ:3008092965
  • VIPER16HN图
  • 深圳市惊羽科技有限公司

     该会员已使用本站11年以上
  • VIPER16HN
  • 数量9328 
  • 厂家ST-意法半导体 
  • 封装7DIP 
  • 批号▉▉:2年内 
  • ▉▉¥10.4元一有问必回一有长期订货一备货HK仓库
  • QQ:43871025QQ:43871025 复制
  • 131-4700-5145---Q-微-恭-候---有-问-秒-回 QQ:43871025
  • VIPER16HN图
  • 北京齐天芯科技有限公司

     该会员已使用本站15年以上
  • VIPER16HN
  • 数量100000 
  • 厂家ST Microelectronics 
  • 封装N/A 
  • 批号2024+ 
  • 原装正品,假一罚十
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
  • 010-62104931 QQ:2880824479QQ:1344056792
  • VIPER16HN图
  • 深圳市凯信扬科技有限公司

     该会员已使用本站7年以上
  • VIPER16HN
  • 数量4505 
  • 厂家ST/意法 
  • 封装DIP-7 
  • 批号20+ 
  • ▲▲▲诚信经营,服务至上,十年专注▲▲▲
  • QQ:872328909QQ:872328909 复制
  • 0755-82518059 QQ:872328909
  • VIPER16HN图
  • 深圳市毅创腾电子科技有限公司

     该会员已使用本站16年以上
  • VIPER16HN
  • 数量18568 
  • 厂家ST 
  • 封装DIP 
  • 批号22+ 
  • ★只做原装★正品现货★原盒原标★
  • QQ:2355507162QQ:2355507162 复制
    QQ:2355507165QQ:2355507165 复制
  • 86-755-83616256 QQ:2355507162QQ:2355507165
  • VIPER16HN图
  • 千层芯半导体(深圳)有限公司

     该会员已使用本站9年以上
  • VIPER16HN
  • 数量6000 
  • 厂家ST 
  • 封装SMD 
  • 批号2019+ 
  • 交流/直流转换器
  • QQ:2685694974QQ:2685694974 复制
    QQ:2593109009QQ:2593109009 复制
  • 0755-83978748,0755-23611964,13760152475 QQ:2685694974QQ:2593109009
  • VIPER16HN图
  • 深圳市正信鑫科技有限公司

     该会员已使用本站12年以上
  • VIPER16HN
  • 数量5469 
  • 厂家ST 
  • 封装原厂封装 
  • 批号22+ 
  • 原装正品★真实库存★价格优势★欢迎来电洽谈
  • QQ:1686616797QQ:1686616797 复制
    QQ:2440138151QQ:2440138151 复制
  • 0755-22655674 QQ:1686616797QQ:2440138151
  • VIPER16HN图
  • 深圳市得捷芯城科技有限公司

     该会员已使用本站11年以上
  • VIPER16HN
  • 数量11111 
  • 厂家ST/意法 
  • 封装NA/ 
  • 批号23+ 
  • 原装现货,当天可交货,原型号开票
  • QQ:3007977934QQ:3007977934 复制
    QQ:3007947087QQ:3007947087 复制
  • 0755-82546830 QQ:3007977934QQ:3007947087
  • VIPER16HN图
  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • VIPER16HN
  • 数量11530 
  • 厂家Power Integrations 
  • 封装8-DIP 
  • 批号23+ 
  • 全新原装现货热卖
  • QQ:2885348317QQ:2885348317 复制
    QQ:2885348339QQ:2885348339 复制
  • 0755-83209630 QQ:2885348317QQ:2885348339
  • VIPER16HN图
  • 深圳市羿芯诚电子有限公司

     该会员已使用本站7年以上
  • VIPER16HN
  • 数量4500 
  • 厂家ST/意法 
  • 封装DIP7 
  • 批号21+ 
  • 羿芯诚只做原装 原厂渠道 价格优势
  • QQ:2881498351QQ:2881498351 复制
  • 0755-22968581 QQ:2881498351
  • VIPER16HN图
  • 深圳市驰天熠电子有限公司

     该会员已使用本站1年以上
  • VIPER16HN
  • 数量33560 
  • 厂家ST(意法半导体) 
  • 封装DIP7 
  • 批号23+ 
  • 全新原装,优势价格,支持配单
  • QQ:3003795629QQ:3003795629 复制
    QQ:534325024QQ:534325024 复制
  • 86-15802056765 QQ:3003795629QQ:534325024
  • VIPER16HN图
  • 深圳市华芯盛世科技有限公司

     该会员已使用本站13年以上
  • VIPER16HN
  • 数量8650000 
  • 厂家ST 
  • 封装原厂封装 
  • 批号最新批号 
  • 一级代理,原装特价现货!
  • QQ:2881475757QQ:2881475757 复制
  • 0755-83225692 QQ:2881475757
  • VIPER16HN图
  • 深圳市芯柏然科技有限公司

     该会员已使用本站7年以上
  • VIPER16HN
  • 数量26800 
  • 厂家ST 
  • 封装DIP 
  • 批号22+ 
  • 授权代理直销,原厂原装现货,假一罚十,特价销售
  • QQ:287673858QQ:287673858 复制
  • 0755-82533534 QQ:287673858
  • VIPER16HN图
  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • VIPER16HN
  • 数量23480 
  • 厂家ST 
  • 封装DIP-7 
  • 批号全新环保批次 
  • 公司只售原装 支持实单
  • QQ:2881495751QQ:2881495751 复制
  • 0755-88917743 QQ:2881495751
  • VIPER16HN图
  • 深圳市隆鑫创展电子有限公司

     该会员已使用本站15年以上
  • VIPER16HN
  • 数量30000 
  • 厂家BROADCOM 
  • 封装BGA 
  • 批号2022+ 
  • 电子元器件一站式配套服务QQ:122350038
  • QQ:2355878626QQ:2355878626 复制
    QQ:2850299242QQ:2850299242 复制
  • 0755-82812278 QQ:2355878626QQ:2850299242
  • VIPER16HN图
  • 万三科技(深圳)有限公司

     该会员已使用本站2年以上
  • VIPER16HN
  • 数量6500000 
  • 厂家N/A 
  • 封装原厂原装 
  • 批号22+ 
  • 万三科技 秉承原装 实单可议
  • QQ:3008962483QQ:3008962483 复制
  • 0755-23763516 QQ:3008962483
  • VIPER16HN图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • VIPER16HN
  • 数量6980 
  • 厂家ST 
  • 封装22+ 
  • 批号DIP-7 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:2881512844QQ:2881512844 复制
  • 075584507705 QQ:2881512844
  • VIPER16HN图
  • 深圳市创思克科技有限公司

     该会员已使用本站2年以上
  • VIPER16HN
  • 数量8800 
  • 厂家ST/意法 
  • 封装DIP7 
  • 批号20+ 
  • 全新原装原厂实力挺实单欢迎来撩
  • QQ:1092793871QQ:1092793871 复制
  • -0755-88910020 QQ:1092793871
  • VIPER16HN图
  • 深圳市一线半导体有限公司

     该会员已使用本站11年以上
  • VIPER16HN
  • 数量10034 
  • 厂家STMicroelectronics 
  • 封装 
  • 批号 
  • 全新原装部分现货其他订货
  • QQ:2881493920QQ:2881493920 复制
    QQ:2881493921QQ:2881493921 复制
  • 0755-88608801多线 QQ:2881493920QQ:2881493921
  • VIPER16HN图
  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • VIPER16HN
  • 数量65000 
  • 厂家ST 
  • 封装DIP-7 
  • 批号23+ 
  • 真实库存全新原装正品!代理此型号
  • QQ:2881495753QQ:2881495753 复制
  • 0755-23605827 QQ:2881495753
  • VIPER16HN图
  • 深圳市隆亿诚科技有限公司

     该会员已使用本站3年以上
  • VIPER16HN
  • 数量5734 
  • 厂家STMicroelectronics 
  • 封装7-DIP 
  • 批号22+ 
  • 支持检测.现货.原装价优
  • QQ:778039761QQ:778039761 复制
  • -0755-82710221 QQ:778039761
  • VIPER16HN图
  • 深圳市科雨电子有限公司

     该会员已使用本站9年以上
  • VIPER16HN
  • 数量4854 
  • 厂家STM 
  • 封装DIP-7 
  • 批号24+ 
  • ★体验愉快问购元件!!就找我吧!单价:14元
  • QQ:97877805QQ:97877805 复制
  • 171-4729-0036(微信同号) QQ:97877805

产品型号VIPER16HN的概述

芯片VIPER16HN的概述 VIPER16HN是一款由意法半导体(STMicroelectronics)推出的高集成度、高性能电源管理芯片。作为一种集成了多项功能的电源转换器,VIPER16HN特别适用于开关电源(SMPS)场合,广泛用于电器、消费电子及工业设备中,该芯片以其高效率、低静态功耗以及多种保护机制而受到设计师的青睐。 VIPER16HN采用了先进的半导体工艺,使其在多个应用中保持高效能。其内置的MOSFET设计不仅提高了工作效率,同时也降低了系统设计的复杂性,让系统集成度大幅提升。这种芯片的应用领域包括LED照明、电视机、计算机电源、以及各种工业电源系统。 芯片VIPER16HN的详细参数 VIPER16HN的主要技术参数包含: - 输入电压范围:85V至265V AC - 输出功率:最高可达16W - 工作频率:典型的开关频率为100kHz - 效率:在全负载情况下可达...

产品型号VIPER16HN的Datasheet PDF文件预览

VIPER16  
Fixed frequency VIPerTM plus family  
Features  
800 V avalanche rugged power section  
PWM operation with frequency jittering for low  
EMI  
SO16 narrow  
DIP-7  
Operating frequency:  
– 60 kHz for L type  
– 115 kHz for H type  
Description  
The device is an off-line converter with an 800 V  
avalanche ruggedness power section, a PWM  
controller, user defined overcurrent limit,  
protection against feedback network  
disconnection, hysteretic thermal protection, soft  
start up and safe auto restart after any fault  
condition. It is able to power itself directly from the  
rectified mains, eliminating the need for an  
auxiliary bias winding.  
No need of auxiliary winding for low power  
application  
Standby power < 50 mW at 265 V  
AC  
Limiting current with adjustable set point  
On-board soft-start  
Safe auto-restart after a fault condition  
Hysteretic thermal shutdown  
Advance frequency jittering reduces EMI filter  
cost. Burst mode operation and the devices very  
low consumption both help to meet the standard  
set by energy saving regulations.  
Application  
Replacement of capacitive power supply  
Auxiliary power supply for appliances,  
Power metering  
Figure 1.  
Typical application  
LED drivers  
Table 1.  
Device summary  
Order codes  
Package  
Packaging  
VIPER16LN  
VIPER16HN  
VIPER16HD  
VIPER16HDTR  
VIPER16LD  
DIP-7  
Tube  
Tube  
Tape and reel  
Tube  
SO16 narrow  
VIPER16LDTR  
Tape and reel  
October 2011  
Doc ID 15232 Rev 5  
1/25  
www.st.com  
25  
Contents  
VIPER16  
Contents  
1
2
3
4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
4.1  
4.2  
4.3  
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
5
Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Typical circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
High voltage current generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Soft start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Adjustable current limit set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
FB pin and COMP pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Automatic auto restart after overload or short-circuit . . . . . . . . . . . . . 17  
Open loop failure protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
2/25  
Doc ID 15232 Rev 5  
VIPER16  
Block diagram  
1
Block diagram  
Figure 2.  
Block diagram  
2
Typical power  
Table 2.  
Typical power  
230 VAC  
Open frame(2)  
10 W  
85-265 VAC  
Part number  
Adapter(1)  
Adapter(1)  
Open frame(2)  
VIPER16  
9 W  
5 W  
6 W  
1. Typical continuous power in non ventilated enclosed adapter measured at 50 °C ambient.  
2. Maximum practical continuous power in an open frame design at 50 °C ambient, with adequate heat  
sinking.  
Doc ID 15232 Rev 5  
3/25  
 
Pin settings  
VIPER16  
3
Pin settings  
Figure 3.  
Connection diagram (top view)  
$2!).  
$2!).  
$2!).  
$2!).  
$2!).  
$2!).  
.ꢄ#ꢄ  
.ꢄ!ꢄ  
!-ꢀꢁꢀꢂꢃVꢁ  
Note:  
The copper area for heat dissipation has to be designed under the DRAIN pins.  
Table 3.  
Pin N.  
Pin description  
Name  
Function  
DIP-7  
SO16  
Connected to the source of the internal power MOSFET and controller  
ground reference.  
1
1-2  
GND  
N.A.  
VDD  
Not available for user. It can be connected to GND (pins 1-2) or left not  
connected.  
-
4
5
Supply voltage of the control section. This pin provides the charging  
current of the external capacitor.  
2
This pin allows setting the drain current limitation. The limit can be  
reduced by connecting an external resistor between this pin and GND.  
Pin left open if default drain current limitation is used.  
3
4
6
7
LIM  
FB  
Inverting input of the internal trans conductance error amplifier.  
Connecting the converter output to this pin through a single resistor  
results in an output voltage equal to the error amplifier reference  
voltage (See VFB_REF on Table 7). An external resistors divider is  
required for higher output voltages.  
Output of the internal trans conductance error amplifier. The  
compensation network have to be placed between this pin and GND to  
achieve stability and good dynamic performance of the voltage control  
loop. The pin is used also to directly control the PWM with an  
optocoupler. The linear voltage range extends from VCOMPL to  
VCOMPH (Table 7).  
5
8
COMP  
DRAIN  
High voltage drain pin. The built-in high voltage switched start-up bias  
current is drawn from this pin too.  
7,8  
13-16  
Pins connected to the metal frame to facilitate heat dissipation.  
4/25  
Doc ID 15232 Rev 5  
 
 
VIPER16  
Electrical data  
4
Electrical data  
4.1  
Maximum ratings  
Table 4.  
Symbol  
Absolute maximum ratings  
Value  
Pin  
Parameter  
Unit  
(DIP-7)  
Min  
Max  
VDRAIN  
EAV  
7, 8  
7, 8  
7, 8  
7, 8  
5
Drain-to-source (ground) voltage  
Repetitive avalanche energy (limited by TJ = 150 °C)  
Repetitive avalanche current (limited by TJ = 150 °C)  
Pulse drain current (limited by TJ = 150 °C)  
Input pin voltage  
800  
2
V
mJ  
A
IAR  
1
IDRAIN  
VCOMP  
VFB  
2.5  
3.5  
4.8  
2.4  
A
-0.3  
-0.3  
-0.3  
V
4
Input pin voltage  
V
VLIM  
3
Input pin voltage  
V
Self  
limited  
VDD  
IDD  
2
2
Supply voltage  
-0.3  
V
Input current  
20  
1
mA  
W
Power dissipation at TA < 40 °C (DIP-7)  
Power dissipation at TA < 60 °C (SO16N)  
Operating junction temperature range  
Storage temperature  
PTOT  
1
W
TJ  
-40  
-55  
150  
150  
°C  
°C  
TSTG  
4.2  
Thermal data  
Table 5.  
Symbol  
Thermal data  
Max value  
SO16N  
Max value  
DIP-7  
Parameter  
Unit  
Thermal resistance junction pin  
(Dissipated power = 1 W)  
RthJP  
RthJA  
RthJA  
35  
90  
80  
40  
110  
90  
°C/W  
°C/W  
°C/W  
Thermal resistance junction ambient  
(Dissipated power = 1 W)  
Thermal resistance junction ambient (1)  
(Dissipated power = 1 W)  
1. When mounted on a standard single side FR4 board with 100 mm2 (0.155 sq in) of Cu (35 μm thick)  
Doc ID 15232 Rev 5  
5/25  
Electrical data  
VIPER16  
4.3  
Electrical characteristics  
(a)  
(T = -25 to 125 °C, V = 14 V ; unless otherwise specified)  
J
DD  
Table 6.  
Power section  
Symbol  
VBVDSS  
IOFF  
Parameter  
Test condition  
IDRAIN = 1 mA,  
Min Typ Max Unit  
Break-down voltage  
800  
V
VCOMP = GND, TJ = 25 °C  
V
= max rating,  
DRAIN  
OFF state drain current  
60  
μA  
VCOMP = GND  
DRAIN = 0.2 A, TJ = 25 °C  
IDRAIN = 0.2 A, TJ = 125 °C  
I
20  
40  
10  
24  
48  
Ω
Ω
RDS(on)  
COSS  
Drain-source on state resistance  
Effective (energy related) output capacitance VDRAIN = 0 to 640 V  
pF  
Table 7.  
Symbol  
Supply section  
Parameter  
Test condition  
Min Typ Max Unit  
Voltage  
VDRAIN  
Drain-source start voltage  
Start up charging current  
40  
50  
60  
V
_START  
V
DRAIN = 100 V to 640 V,  
IDDch1  
-0.6  
-1.8 mA  
-13 mA  
VDD = 4 V  
VDRAIN = 100 V to 640 V,  
IDDch2  
Charging current during operation  
-7  
VDD = 9 V falling edge  
VDD  
VDDclamp  
VDDon  
Operating voltage range  
VDD clamp voltage  
11.5  
23.5  
12  
23.5  
14  
V
V
V
IDD = 15 mA  
VDD start up threshold  
13  
VDD on internal high voltage current  
generator threshold  
VDDCSon  
9.5 10.5 11.5  
7
V
V
VDDoff  
Current  
IDD0  
VDD under voltage shutdown threshold  
Operating supply current, not switching  
Operating supply current, switching  
8
9
FOSC = 0 kHz, VCOMP = GND  
0.6 mA  
1.3 mA  
V
= 120 V,  
DRAIN  
FSW = 60 kHz  
IDD1  
V
= 120 V,  
FSW = 115 kHz  
DRAIN  
1.5 mA  
0.35 mA  
mA  
IDDoff  
IDDol  
Operating supply current with VDD < VDDoff  
Open loop failure current threshold  
VDD < VDDoff  
VDD = VDDclamp  
VCOMP = 3.3 V,  
4
a. Adjust VDD above VDDon start-up threshold before setting to 14 V  
Doc ID 15232 Rev 5  
6/25  
 
VIPER16  
Electrical data  
Table 8.  
Symbol  
Controller section  
Parameter  
Test condition  
Min Typ Max Unit  
Error amplifier  
VREF_FB  
FB reference voltage  
3.2 3.3 3.4  
V
IFB_PULL UP Current pull up  
-1  
2
μA  
GM  
Trans conductance  
mA/V  
Current setting (LIM) pin  
VLIM_LOW Low level clamp voltage  
ILIM = -100 μA  
0.5  
3
V
Compensation (COMP) pin  
VCOMPH  
VCOMPL  
Upper saturation limit  
Burst mode threshold  
TJ = 25 °C  
TJ = 25 °C  
TJ = 25 °C  
V
V
1
4
1.1 1.2  
VCOMPL_HYS Burst mode hysteresis  
HCOMP ΔVCOMP / ΔIDRAIN  
40  
mV  
V/A  
kΩ  
μA  
μA  
9
RCOMP(DYN) Dynamic resistance  
VFB = GND  
15  
Source / sink current  
ICOMP  
VFB > 100 mV  
150  
220  
Max source current  
VCOMP = GND, VFB = GND  
Current limitation  
ILIM = -10 μA, VCOMP = 3.3 V,  
TJ = 25 °C  
IDlim  
Drain current limitation  
0.38 0.4 0.42  
A
tSS  
Soft-start time  
8.5  
450  
85  
ms  
ns  
TON_MIN  
IDlim_bm  
Minimum turn ON time  
Burst mode current limitation  
VCOMP = VCOMPL  
mA  
Overload  
tOVL  
Overload time  
50  
1
ms  
s
tRESTART  
Restart time after fault  
Oscillator section  
FOSC Switching frequency  
VIPer16L  
VIPer16H  
54  
60  
66 kHz  
103 115 127 kHz  
F
OSC = 60 kHz  
OSC = 115 kHz  
4
8
kHz  
kHz  
Hz  
FD  
Modulation depth  
F
FM  
Modulation frequency  
Maximum duty cycle  
230  
DMAX  
70  
80  
%
Thermal shutdown  
TSD  
Thermal shutdown temperature  
Thermal shutdown hysteresis  
150 160  
30  
°C  
°C  
THYST  
Doc ID 15232 Rev 5  
7/25  
 
Typical electrical characteristics  
VIPER16  
5
Typical electrical characteristics  
Figure 4.  
IDlim vs T  
Figure 5.  
F
vs T  
OSC J  
J
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ꢆꢁꢀꢇ  
ꢆꢁꢀꢀ  
ꢀꢁꢂꢅ  
ꢀꢁꢂꢄ  
ꢀꢁꢂꢃ  
ꢀꢁꢂꢇ  
ꢈꢉꢀ  
ꢉꢀ  
ꢆꢀꢀ  
ꢆꢉꢀ  
ꢈꢉꢀ  
ꢉꢀ  
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Figure 6.  
V
vs T  
Figure 7.  
H
vs T  
COMP J  
DRAIN_START  
J
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6 $2 ! ). ? 34!2 4 ꢉ  #  
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ꢀꢄꢂꢇꢀ  
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ꢀꢁꢂꢀ  
ꢀꢁꢅꢀ  
ꢈꢉꢀ  
ꢉꢀ  
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Figure 8.  
G vs T  
Figure 9.  
V
vs T  
M
J
REF_FB  
J
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ꢀꢁꢂꢉ  
ꢀꢁꢂꢀ  
ꢀꢁꢅꢉ  
ꢀꢁꢅꢀ  
ꢁꢄꢀꢃ  
ꢁꢄꢀꢅ  
ꢁꢄꢀꢀ  
ꢀꢄꢂꢇ  
ꢀꢄꢂꢉ  
ꢀꢄꢃꢃ  
ꢀꢄꢃꢅ  
ꢀꢄꢃꢀ  
ꢋꢆꢀ  
ꢆꢀ  
ꢁꢀꢀ  
ꢁꢆꢀ  
ꢈꢉꢀ  
ꢉꢀ  
ꢆꢀꢀ  
ꢆꢉꢀ  
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!-ꢀꢁꢁꢅꢂVꢁ  
8/25  
Doc ID 15232 Rev 5  
 
VIPER16  
Typical electrical characteristics  
Figure 10. I  
vs T  
Figure 11. Operating supply current  
(no switching) vs T  
COMP  
J
J
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 )#/- 0    #  
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ꢆꢁꢀꢃ  
ꢆꢁꢀꢀ  
ꢀꢁꢂꢄ  
ꢀꢁꢂꢇ  
ꢀꢁꢅꢅ  
ꢀꢁꢅꢃ  
ꢀꢁꢅꢀ  
ꢁꢄꢀꢅ  
ꢁꢄꢀꢀ  
ꢀꢄꢂꢇ  
ꢀꢄꢂꢉ  
ꢀꢄꢃꢃ  
ꢀꢄꢃꢅ  
ꢀꢄꢃꢀ  
ꢋꢆꢀ  
ꢆꢀ  
4* ; #=  
ꢁꢀꢀ  
ꢁꢆꢀ  
ꢈꢉꢀ  
ꢉꢀ  
ꢆꢀꢀ  
ꢆꢉꢀ  
7-ꢁ>ƒ&@  
!-ꢀꢁꢁꢆꢀVꢁ  
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Figure 12. Operating supply current  
(switching) vs T  
Figure 13. IDlim vs R  
LIM  
J
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ꢀꢄꢃꢀ  
ꢀꢄꢊꢀ  
ꢀꢄꢇꢀ  
ꢀꢄꢆꢀ  
ꢀꢄꢅꢀ  
ꢀꢄꢌꢀ  
ꢀꢄꢉꢀ  
ꢀꢄꢁꢀ  
ꢀꢄꢀꢀ  
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ꢆꢁꢀꢉ  
ꢆꢁꢀꢀ  
ꢀꢁꢂꢉ  
ꢀꢁꢂꢀ  
ꢀꢁꢅꢉ  
ꢀꢁꢅꢀ  
ꢀꢁꢋꢉ  
ꢀꢁꢋꢀ  
ꢀꢁꢄꢉ  
ꢀꢁꢄꢀ  
ꢈꢉꢀ  
ꢉꢀ  
ꢆꢀꢀ  
ꢆꢉꢀ  
ꢉꢀ  
ꢅꢀ  
ꢇꢀ  
ꢃꢀ  
ꢁꢀꢀ  
7-ꢁ>ƒ&@  
2LIM ;K/HM=  
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!-ꢀꢁꢁꢆꢌVꢁ  
Figure 14. Power MOSFET on-resistance vs T Figure 15. Power MOSFET break down voltage  
J
vs T  
J
Doc ID 15232 Rev 5  
9/25  
 
Typical electrical characteristics  
Figure 16. Thermal shutdown  
VIPER16  
VDD  
VDDon  
VDDCSon  
VDDoff  
time  
time  
IDRAIN  
TJ  
TSD  
TSD - THYST  
time  
Normal operation  
Normal operation  
Shut down after over temperature  
10/25  
Doc ID 15232 Rev 5  
 
VIPER16  
Typical circuit  
6
Typical circuit  
Figure 17. Buck converter  
5IEꢆ  
5IEꢇ  
$&ꢎ,1  
/ꢆ  
9,3HUꢆꢄ  
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&ꢊ  
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&ꢃ  
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*1'  
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&203  
/,0  
&IE  
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5FRPS  
&FRPS  
5/,0  
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/RXW  
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'RXW  
&RXW  
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Figure 18. Buck boost converter  
5LQ  
'LQ  
/ꢆ  
9,3HUꢆꢄ  
$&ꢎ,1  
'5$,1  
9''  
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&ꢊ  
&203  
*1'  
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5FRPS  
&FRPS  
5/,0  
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&ꢃ  
'RXW  
/RXW  
9287  
'ꢇ &RXW  
!-ꢀꢁꢁꢂꢆVꢁ  
Doc ID 15232 Rev 5  
11/25  
Typical circuit  
Figure 19. Flyback converter (primary regulation)  
VIPER16  
)86(  
$&ꢎ,1  
75$16)  
/ꢆ  
'ꢀ  
%5,'*(  
&ꢆ  
&ꢇ  
$&ꢎ,1  
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&FO  
'ꢇ  
9RXW  
ꢆꢇ  
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'ꢆ  
5DX[  
'DX[  
&RXW  
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'5$,1  
*1'  
5IEK  
9''  
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&203  
/,0  
5IEO  
&IE  
5F  
&F  
&S  
5/,0  
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Figure 20. Flyback converter (non isolated)  
5LQ  
/ꢆ  
$&ꢎ,1  
'LQ  
&ꢇ  
&ꢊ  
5FO  
&FO  
9287  
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5IEꢆ  
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&FRPSꢇ  
5/,0  
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12/25  
Doc ID 15232 Rev 5  
VIPER16  
Power section  
7
Power section  
The power section is implemented with an n-channel power MOSFET with a breakdown  
voltage of 800 V min. and a typical R of 20 Ω. It includes a SenseFET structure to  
DS(on)  
allow a virtually lossless current sensing and the thermal sensor.  
The gate driver of the power MOSFET is designed to supply a controlled gate current during  
both turn-ON and turn-OFF in order to minimize common mode EMI. During UVLO  
conditions, an internal pull-down circuit holds the gate low in order to ensure that the power  
MOSFET cannot be turned ON accidentally.  
8
High voltage current generator  
The high voltage current generator is supplied by the DRAIN pin. At the first start up of the  
converter it is enabled when the voltage across the input bulk capacitor reaches the  
V
threshold, sourcing a I  
current (see Table 7 on page 6); as the V  
DRAIN_START  
DDch1 DD  
voltage reaches the V  
threshold, the power section starts switching and the high  
DDon  
voltage current generator is turned OFF. The VIPer16 is powered by the energy stored in the  
capacitor.  
V
DD  
In steady state condition, if the self biasing function is used, the high voltage current  
generator is activated between V and V (see Table 7 on page 6), delivering  
DDCSon  
DDon  
I
, see Table 7 on page 6 to the V capacitor during the MOSFET off time (see  
DDch2  
DD  
Figure 21 on page 13).  
The device can also be supplied through the auxiliary winding; in this case the high voltage  
current source is disabled during steady-state operation, provided that VDD is above  
V
.
DDCSon  
At converter power-down, the V voltage drops and the converter activity stops as it falls  
DD  
below V  
threshold (see Table 7 on page 6).  
DDoff  
Figure 21. Power on and power off  
VIN < VDRAIN_START  
VIN  
HV startup is no more activated  
VDRAIN_START  
With internal self-supply  
VDD  
t
regulation is lost here  
Without internal self-supply  
VDDon  
VDDCSon  
VDDoff  
t
VDRAIN  
IDD  
IDDch2  
t
t
IDDch1  
Power-off  
Normal operation  
Power-on  
Doc ID 15232 Rev 5  
13/25  
 
Oscillator  
VIPER16  
9
Oscillator  
The switching frequency is internally fixed at 60 kHz (part number VIPER16LN or LD) or 115  
kHz (part number VIPER16HN or HD).  
In both cases the switching frequency is modulated by approximately 4 kHz (60 kHz  
version) or 8 kHz (115 kHz version) at 230 Hz (typical) rate, so that the resulting spread-  
spectrum action distributes the energy of each harmonic of the switching frequency over a  
number of sideband harmonics having the same energy on the whole but smaller  
amplitudes.  
10  
11  
Soft start-up  
During the converters' start-up phase, the soft-start function progressively increases the  
cycle-by-cycle drain current limit, up to the default value I  
further limited and the output voltage is progressively increased reducing the stress on the  
secondary diode. The soft-start time is internally fixed to t , see typical value  
on Table 8 on page 7, and the function is activated for any attempt of converter start-up and  
after a fault event.  
. By this way the drain current is  
Dlim  
SS  
This function helps prevent transformers' saturation during start-up and short-circuit.  
Adjustable current limit set point  
The VIPer16 includes a current mode PWM controller: cycle by cycle the drain current is  
sensed through the integrated resistor R  
and the voltage is applied to the non  
SENSE  
inverting input of the PWM comparator, see Figure 2 on page 3. As soon as the sensed  
voltage is equal to the voltage derived from the COMP pin, the power MOSFET is switched  
OFF.  
In parallel with the PWM operations, the comparator OCP, see Figure 2 on page 3, checks  
the level of the drain current and switch OFF the power MOSFET in case the current is  
higher than the threshold I  
, see Table 8 on page 7.  
Dlim  
The level of the drain current limit, I  
, can be reduced depending from the sunk current  
Dlim  
from the pin LIM. The resistor R , between LIM and GND pins, fixes the current sunk and  
LIM  
than the level of the current limit, I  
, see Figure 13 on page 9.  
Dlim  
When the LIM pin is left open or if the R  
has an high value (i.e. > 80 kΩ) the current limit  
LIM  
is fixed to its default value, I  
, as reported on Table 8 on page 7.  
Dlim  
14/25  
Doc ID 15232 Rev 5  
VIPER16  
FB pin and COMP pin  
12  
FB pin and COMP pin  
The device can be used both in non-isolated and in isolated topology. In case of non-  
isolated topology, the feedback signal from the output voltage is applied directly to the FB  
pin as inverting input of the internal error amplifier having the reference voltage, V  
REF_FB,  
see the Table 8 on page 7.  
The output of the error amplifier sources and sinks the current, I  
, respectively to and  
COMP  
from the compensation network connected on the COMP pin. This signal is then compared,  
in the PWM comparator, with the signal coming from the SenseFET; the power MOSFET is  
switched off when the two values are the same on cycle by cycle basis. See the Figure 2 on  
page 3 and the Figure 22 on page 15.  
When the power supply output voltage is equal to the error amplifier reference voltage,  
V
, a single resistor has to be connected from the output to the FB pin. For higher  
REF_FB  
output voltages the external resistor divider is needed. If the voltage on FB pin is  
accidentally left floating, an internal pull-up protects the controller.  
The output of the error amplifier is externally accessible through the COMP pin and it’s used  
for the loop compensation: usually an RC network.  
As reported on Figure 22 on page 15, in case of isolated power supply, the internal error  
amplifier has to be disabled (FB pin shorted to GND). In this case an internal resistor is  
connected between an internal reference voltage and the COMP pin, see the Figure 22 on  
page 15. The current loop has to be closed on the COMP pin through the opto-transistor in  
parallel with the compensation network. The V  
dynamics ranges is between V  
COMP  
COMPL  
and V  
as reported on Figure 23 on page 16.  
COMPH  
When the voltage V  
drops below the voltage threshold V  
, the converter enters  
COMP  
COMPL  
burst mode, see Section 13 on page 16.  
When the voltage V rises above the V  
threshold, the peak drain current will  
COMPH  
COMP  
reach its limit, as well as the deliverable output power.  
Figure 22. Feedback circuit  
Without Isolation:  
VREF  
switch open & E/A enabled  
RCOMP  
VCOMPL  
With Isolation:  
switch closed & E/A disabled  
PWM stop  
+
-
VOUT  
SW  
BUS  
FB  
-
from RSENSE  
E/A  
+
RH  
VREF_FB  
to PWM  
+
-
nR  
Isolation  
No  
Isolation  
RL  
R
COMP  
Doc ID 15232 Rev 5  
15/25  
 
Burst mode  
VIPER16  
Figure 23. COMP pin voltage versus I  
DRAIN  
'5$,1  
,
,
'OLP  
,
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9
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13  
Burst mode  
When the voltage V  
drops below the threshold, V  
, the power MOSFET is kept in  
COMPL  
COMP  
OFF state and the consumption is reduced to I  
current, as reported on Table 7 on  
DD0  
page 6. As reaction at the energy delivery stop, the V  
voltage increases and as soon  
COMP  
as it exceeds the threshold V  
+ V  
, the converter starts switching again with  
COMPL  
COMPL_HYS  
consumption level equal to I  
current. This ON-OFF operation mode, referred to as “burst  
DD1  
mode” and reported on Figure 24 on page 16, reduces the average frequency, which can go  
down even to a few hundreds hertz, thus minimizing all frequency-related losses and  
making it easier to comply with energy saving regulations. During the burst mode, the drain  
current limit is reduced to the value I  
avoid the audible noise issue.  
(reported on Table 8 on page 7) in order to  
Dlim_bm  
Figure 24. Load-dependent operating modes: timing diagrams  
VCOMP  
VCOMPL +VCOMPL_HYS  
VCOMPL  
time  
IDD  
IDD1  
IDD0  
time  
time  
IDRAIN  
IDlim_bm  
Burst Mode  
16/25  
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VIPER16  
Automatic auto restart after overload or short-circuit  
14  
Automatic auto restart after overload or short-circuit  
The overload protection is implemented in automatic way using the integrated up-down  
counter. Every cycle, it is incremented or decremented depending if the current logic detects  
the limit condition or not. The limit condition is the peak drain current, I  
reported on  
Dlim ,  
Table 8 on page 7 or the one set by the user through the R  
resistor, as reported in  
LIM  
Figure 13 on page 9. After the reset of the counter, if the peak drain current is continuously  
equal to the level I , the counter will be incremented till the fixed time, t , after that will  
Dlim  
OVL  
be disabled the power MOSFET switch ON. It will be activated again, through the soft start,  
after the t time, see the Figure 25 and Figure 26 on page 17 and the mentioned time  
RESTART  
values on Table 8 on page 7.  
In case of overload or short-circuit event, the power MOSFET switching will be stopped after  
a time that depends from the counter and that can be as maximum equal to t  
. The  
OVL  
protection will occur in the same way until the overload condition is removed, see Figure 25  
and Figure 26 on page 17. This protection ensures restart attempts of the converter with low  
repetition rate, so that it works safely with extremely low power throughput and avoiding the  
IC overheating in case of repeated overload events. If the overload is removed before the  
protection tripping, the counter will be decremented cycle by cycle down to zero and the IC  
will not be stopped.  
Figure 25. Timing diagram: OLP sequence (IC externally biased)  
SHORT CIRCUIT  
REMOVED HERE  
SHORT CIRCUIT  
OCCURS HERE  
VDD  
VDDon  
VDDCSon  
time  
time  
IDRAIN  
IDlim_bm  
tOVL  
tOVL  
*
tRESTART  
t1  
tRESTART  
tRESTART  
tSS  
* The time t1 can be lower or equal to the time tOVL  
tSS  
tSS  
Figure 26. Timing diagram: OLP sequence (IC internally biased)  
SHORT CIRCUIT  
REMOVED HERE  
SHORT CIRCUIT  
OCCURS HERE  
VDD  
VDDon  
VDDCSon  
time  
time  
IDRAIN  
IDlim_bm  
tOVL  
tOVL  
*
tRESTART  
t1  
tRESTART  
tRESTART  
tSS  
tSS  
tSS  
*
The time t1 can be lower than or equal to the time tOVL  
Doc ID 15232 Rev 5  
17/25  
 
 
Open loop failure protection  
VIPER16  
15  
Open loop failure protection  
In case the power supply is built in fly-back topology and the VIPer16 is supplied by an  
auxiliary winding, as shown in Figure 27 on page 18 and Figure 28 on page 19, the  
converter is protected against feedback loop failure or accidental disconnections of the  
winding.  
The following description is applicable for the schematics of Figure 27 on page 18 and  
Figure 28 on page 19, respectively the non-isolated fly-back and the isolated fly-back.  
If R is opened or R is shorted, the VIPer16 works at its drain current limitation. The output  
H
L
voltage, V  
, will increase and so the auxiliary voltage, V  
, which is coupled with the  
OUT  
AUX  
output through the secondary-to-auxiliary turns ratio.  
As the auxiliary voltage increases up to the internal V active clamp, V  
(the value is  
DDclamp  
DD  
reported on Table 8 on page 7) and the clamp current injected on VDD pin exceeds the latch  
threshold, I  
generated.  
(the value is reported on Table 8 on page 7), a fault signal is internally  
DDol  
In order to distinguish an actual malfunction from a bad auxiliary winding design, both the  
above conditions (drain current equal to the drain current limitation and current higher than  
I
through VDD clamp) have to be verified to reveal the fault.  
DDol  
If R is opened or R is shorted, the output voltage, V  
, will be clamped to the reference  
L
H
OUT  
voltage V  
(in case of non isolated fly-back) or to the external TL voltage reference (in  
REF_FB  
case of isolated fly-back).  
Figure 27. FB pin connection for non-isolated fly-back  
DAUX  
RAUX  
VAUX  
CVDD  
VDD  
VOUT  
VCOMPL  
PWM stop  
+
-
RH  
BUS  
FB  
-
from RSENSE  
E/A  
+
VREF_FB  
RL  
+
-
to PWM  
nR  
R
COMP  
RS  
CS  
CP  
18/25  
Doc ID 15232 Rev 5  
 
VIPER16  
Open loop failure protection  
Figure 28. FB pin connection for isolated fly-back  
RAUX  
DAUX  
VAUX  
CVDD  
VREF  
RCOMP  
SW  
VCOMPL  
+
-
PWM stop  
BUS  
Disabled  
FB  
VOUT  
from RSENSE  
-
E/A  
+
VREF_FB  
+
-
nR  
to PWM  
R
ROPTO  
RH  
COMP  
R3  
U5  
RC  
CC  
CCOMP  
TL  
RL  
-
Doc ID 15232 Rev 5  
19/25  
Package mechanical data  
VIPER16  
16  
Package mechanical data  
In order to meet environmental requirements, ST offers these devices in different grades of  
®
®
ECOPACK packages, depending on their level of environmental compliance. ECOPACK  
specifications, grade definitions and product status are available at: www.st.com.  
®
ECOPACK is an ST trademark.  
Table 9.  
DIP-7 mechanical data  
mm  
Min  
Dim.  
Typ  
Max  
A
A1  
A2  
b
5,33  
0,38  
2,92  
0,36  
1,14  
0,20  
9,02  
7,62  
6,10  
3,30  
0,46  
1,52  
0,25  
9,27  
7,87  
6,35  
2,54  
7,62  
4,95  
0,56  
1,78  
0,36  
10,16  
8,26  
7,11  
b2  
c
D
E
E1  
e
eA  
eB  
L
10,92  
3,81  
3,30  
2,508  
0,50  
2,92  
0,40  
M (6)(8)  
N
0,60  
0,60  
N1  
O (7)(8)  
0,548  
1- The leads size is comprehensive of the thickness of the leads finishing material.  
2- Dimensions do not include mold protrusion, not to exceed 0,25 mm in total (both side).  
3- Package outline exclusive of metal burrs dimensions.  
4- Datum plane “H” coincident with the bottom of lead, where lead exits body.  
5- Ref. POA MOTHER doc. 0037880  
6- Creepage distance > 800 V  
7- Creepage distance 250 V  
8- Creepage distance as shown in the 664-1 CEI / IEC standard.  
20/25  
Doc ID 15232 Rev 5  
VIPER16  
Package mechanical data  
Figure 29. DIP-7 package dimensions  
Doc ID 15232 Rev 5  
21/25  
Package mechanical data  
VIPER16  
Table 10. SO16N mechanical data  
mm  
Typ  
Dim.  
Min  
Max  
A
A1  
A2  
b
1.75  
0.25  
0.1  
1.25  
0.31  
0.17  
9.8  
0.51  
0.25  
10  
c
D
9.9  
6
E
5.8  
6.2  
4
E1  
e
3.8  
3.9  
1.27  
h
0.25  
0.4  
0
0.5  
1.27  
8
L
k
ccc  
0.1  
22/25  
Doc ID 15232 Rev 5  
VIPER16  
Package mechanical data  
Figure 30. SO16N Package dimensions  
Doc ID 15232 Rev 5  
23/25  
 
Revision history  
VIPER16  
17  
Revision history  
s
Table 11. Document revision history  
Date  
Revision  
Changes  
21-Jan-2009  
07-Dec-2009  
14-May-2010  
1
2
3
Initial release  
Updated Figure 7 on page 8  
Updated Figure 3 on page 4 and Table 3 on page 4  
Updated Table 3 on page 4, Figure 16 on page 10 and  
Figure 21 on page 13  
26-Aug-2010  
10-Oct-2011  
4
5
Updated Figure 30 on page 23 and Table 7 on page 6  
24/25  
Doc ID 15232 Rev 5  
VIPER16  
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