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TC25C25EPE 参数 Datasheet PDF下载

TC25C25EPE图片预览
型号: TC25C25EPE
PDF下载: 下载PDF文件 查看货源
内容描述: BICMOS PWM控制器 [BICMOS PWM CONTROLLERS]
分类和应用: 光电二极管信息通信管理控制器
文件页数/大小: 7 页 / 88 K
品牌: TELCOM [ TELCOM SEMICONDUCTOR, INC ]
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TC25C25
TC35C25
BICMOS PWM CONTROLLERS
FEATURES
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Low Power BICMOS Construction
Low Supply Current at 20 kHz ............... 1.0mA Typ
Latch-Up Immunity ................. >500mA on Outputs
Below Rail Input Protection .............................. – 5V
High Output Drive ................................ 500mA Peak
Fast Rise/Fall Time ..................... 50nsec @ 1000pF
High Frequency Operation .................. Up to 1MHz
Tri-state Sync Pin for Easy Parallel Operation
Under Voltage Hysteresis Guaranteed
Shutdown Pin Available
Double-Ended
Soft Start, With Small Cap
Low Prop Delay Shutdown to
Output ................................................. 140nsec Typ.
GENERAL DESCRIPTION
The TC35C25 family of PWM controllers are CMOS
implementations of the industry standard 3525 voltage
mode SMPS ICs.
These second generation CMOS devices employ
TelCom Semiconductors' Tough BiCMOS™ process for
latch-up proof operation. They offer much lower power
consumption than any of their previous CMOS or bipolar
counterparts.
These controllers have separate supply pins for the
control and output sections of the circuit. This allows "boot-
strap" operation. The CMOS output stage allows the output
voltage to swing to within 25mV of either rail.
Other improved features include tighter hysteresis and
undervoltage start-up specifications over temperature, and
very low input bias current on all inputs.
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3
4
5
ORDERING INFORMATION
Part No.
TC25C25EOE
TC25C25EPE
TC35C25COE
TC35C25CPE
Configuration
Non-Inverting
Pkg./Temperature
16-Pin SOIC (Wide)
– 40°C to +85°C
Non-Inverting 16-Pin Plastic DIP (Narrow)
– 40°C to +85°C
Non-Inverting
16-Pin SOIC (Wide)
0°C to +70°C
Non-Inverting 16-Pin Plastic DIP (Narrow)
0°C to +70°C
FUNCTIONAL BLOCK DIAGRAM
VREF
+
VIN
GND
SYNC
RT
CT
DISCH
16
15
12
3
6
5
7
R
COMP
9
CMPTR
S
PWM
LATCH
IN–
IN+
SOFT
START
SHUTDOWN
1
2
8
ERROR
AMP
+6V
50µA
R
OSC
FLIP
FLOP
UNDER
VOLTAGE
+4V REF
OSC OUT
4
REFERENCE
REGULATOR
35C25
13
VDD
11
A
6
7
+6V
14
B
10
8
TC25/35C25-2 10/1/96
TELCOM SEMICONDUCTOR, INC.
4-111