欢迎访问ic37.com |
会员登录 免费注册
发布采购

NCP1203P60 参数 Datasheet PDF下载

NCP1203P60图片预览
型号: NCP1203P60
PDF下载: 下载PDF文件 查看货源
内容描述: PWM电流模式控制器的通用离线用品配备备用和短路 [PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
文件页数/大小: 14 页 / 148 K
品牌: ONSEMI [ ON SEMICONDUCTOR ]
 浏览型号NCP1203P60的Datasheet PDF文件第2页浏览型号NCP1203P60的Datasheet PDF文件第3页浏览型号NCP1203P60的Datasheet PDF文件第4页浏览型号NCP1203P60的Datasheet PDF文件第5页浏览型号NCP1203P60的Datasheet PDF文件第6页浏览型号NCP1203P60的Datasheet PDF文件第7页浏览型号NCP1203P60的Datasheet PDF文件第8页浏览型号NCP1203P60的Datasheet PDF文件第9页  
NCP1203
PWM Current−Mode
Controller for Universal
Off−Line Supplies Featuring
Standby and Short Circuit
Protection
Housed in SOIC−8 or PDIP−8 package, the NCP1203 represents a
major leap toward ultra−compact Switchmode Power Supplies and
represents an excellent candidate to replace the UC384X devices. Due
to its proprietary SMARTMOSt Very High Voltage Technology, the
circuit allows the implementation of complete off−line AC−DC
adapters, battery charger and a high−power SMPS with few external
components.
With an internal structure operating at a fixed 40 kHz, 60 kHz or
100 kHz switching frequency, the controller features a high−voltage
startup FET which ensures a clean and loss−less startup sequence. Its
current−mode control naturally provides good audio−susceptibility
and inherent pulse−by−pulse control.
When the current setpoint falls below a given value, e.g. the output
power demand diminishes, the IC automatically enters the so−called
skip cycle mode and provides improved efficiency at light loads
while offering excellent performance in standby conditions. Because
this occurs at a user adjustable low peak current, no acoustic noise
takes place.
The NCP1203 also includes an efficient protective circuitry which,
in presence of an output over load condition, disables the output
pulses while the device enters a safe burst mode, trying to restart.
Once the default has gone, the device auto−recovers. Finally, a
temperature shutdown with hysteresis helps building safe and robust
power supplies.
Features
http://onsemi.com
MARKING
DIAGRAMS
8
8
1
SOIC−8
D1, D2 SUFFIX
CASE 751
1
8
PDIP−8
N SUFFIX
CASE 626
1
xx
A
WL, L
Y, YY
W, WW
1
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
xxxxxxxxx
AWL
YYWW
xxxxxx
ALYW
G
8
PIN CONNECTIONS
Adj 1
FB 2
CS 3
GND 4
(Top View)
8 HV
7 NC
6 V
CC
5 Drv
Pb−Free Packages are Available
High−V
oltage Startup Current Source
Auto−Recovery Internal Output Short−Circuit Protection
Extremely Low No−Load Standby Power
Current−Mode with Adjustable Skip−Cycle Capability
Internal Leading Edge Blanking
250 mA Peak Current Capability
Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz
Direct Optocoupler Connection
Undervoltage Lockout at 7.8 V Typical
SPICE Models Available for TRANsient and AC Analysis
Pin to Pin Compatible with NCP1200
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
Applications
AC−DC Adapters for Notebooks, etc.
Offline Battery Chargers
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
©
Semiconductor Components Industries, LLC, 2004
1
October, 2004− Rev. 4
Publication Order Number:
NCP1203/D