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| 型号： | TL1453CDG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.021 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, SOIC-16 |
| 文件页数： | 1/8页 |
| 文件大小： | 255K |
| 代理商： | TL1453CDG4 |
TL1453C
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Complete PWM Power Control Circuitry
D Completely Synchronized Operation
D Internal Undervoltage Lockout Protection
D Wide Supply Voltage Range
D Oscillator Frequency... 500 kHz Max
D Variable Dead Time Provides Control
Over Total Range
D Internal Regulator Provides a Stable 2.5-V
Reference Supply
description
The TL1453C incorporates the functions required in the construction of two pulse-width-modulation control
circuits on a single monolithic chip. Designed primarily for power supply control, the TL1453C contains an
on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage
lockout circuitry, and dual common-emitter output transistor circuits.
The uncommitted output transistors provide common-emitter output capability for each controller. The internal
amplifiers exhibit a common-mode voltage range from 1.05 V to 1.45 V. The dead-time control comparator has
no offset unless externally altered and may be used to provide 0% to 100% dead time. The on-chip oscillator
may be operated by terminating RT (pin 2) and CT (pin 1). During low-VCC conditions, the undervoltage lockout
control circuit feature inhibits the output until the internal circuitry is operational.
The TL1453C is characterized for operation from –20
°C to 85°C.
functional block diagram
15
13
14
12
5
4
3
16
SCP
2 IN–
2 IN+
2 FEEDBACK
1 FEEDBACK
1 IN–
1 IN+
REF
GND
8
1 DEAD-TIME CONTROL
2 DEAD-TIME CONTROL
2.5 V
UVLO
11
6
2 OUTPUT
1 OUTPUT
10
7
PWM Comparator 2
PWM Comparator 1
Error Amp.2
1.4 V
2 V
Oscillator
Triangle
Error Amp.1
2.5 V
Voltage
Reference
Vref = 2.5 V
VCC
12
CT
RT
2
9
1
UVLO = Undervoltage Lockout Protection
Copyright
1990, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CT
RT
ERROR
IN+
AMPLIFIER 1 IN–
1 FEEDBACK
1 DEAD-TIME CONTROL
1 OUTPUT
GND
REF
SCP
IN+
ERROR
IN– AMPLIFIER 2
2 FEEDBACK
2 DEAD-TIME CONTROL
2 OUTPUT
VCC
N OR NS PACKAGE
(T0P VIEW)
{
}
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TL1453CDR | 制造商:Rochester Electronics LLC 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS - Bulk |
| TL1453CN | 功能描述:DC/DC 开关控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TL1453CNE4 | 功能描述:DC/DC 开关控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TL1453CNS | 功能描述:DC/DC 开关控制器 DUAL CHANNEL CNTRLR RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TL1453CNSLE | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT |
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