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TL1454ACPW

更新时间： 2024-11-01 03:59:39
品牌 Logo 应用领域
德州仪器 - TI 脉冲
页数 文件大小 规格书
27页 410K
描述
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT

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TL1454ACPW 数据手册

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TL1454A, TL1454AY  
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)  
CONTROL CIRCUIT  
SLVS423 A– MAY 2002 – REVISED SEPTEMBER 2002  
D, N OR PW PACKAGE  
(TOP VIEW)  
D
D
D
D
D
D
D
Two Complete PWM Control Circuits  
Outputs Drive MOSFETs Directly  
Oscillator Frequency . . . 50 kHz to 2 MHz  
3.6-V to 20-V Supply-Voltage Range  
Low Supply Current . . . 3.5 mA Typ  
Adjustable Dead-Time Control, 0% to 100%  
1.26-V Reference  
REF  
CT  
RT  
1
2
3
4
5
6
7
8
16  
15  
14  
SCP  
DTC2  
DTC1  
IN1+  
13 IN2+  
12  
11  
10  
9
IN2–  
IN1–  
COMP2  
COMP1  
GND  
V
CC  
description  
OUT2  
OUT1  
The TL1454A is a dual-channel pulse-width-mod-  
ulation (PWM) control circuit, primarily intended  
for low-power, dc/dc converters. Applications  
include LCD displays, backlight inverters, note-  
book computers, and other products requiring  
small, high-frequency, dc/dc converters.  
Each PWM channel has its own error amplifier, PWM comparator, dead-time control comparator, and MOSFET  
driver. The voltage reference, oscillator, undervoltage lockout, and short-circuit protection are common to both  
channels.  
Channel 1 is configured to drive n-channel MOSFETs in step-up or flyback converters, and channel 2 is  
configured to drive p-channel MOSFETs in step-down or inverting converters. The operating frequency is set  
with an external resistor and an external capacitor, and dead time is continuously adjustable from 0 to 100%  
duty cycle with a resistive divider network. Soft start can be implemented by adding a capacitor to the dead-time  
control (DTC) network. The error-amplifier common-mode input range includes ground, which allows the  
TL1454A to be used in ground-sensing battery chargers as well as voltage converters.  
AVAILABLE OPTIONS  
†
PACKAGED DEVICES  
CHIP FORM  
(Y)  
T
A
SMALL OUTLINE  
(D)  
PLASTIC DIP  
(N)  
TSSOP  
(PW)  
SSOP  
(DB)  
SOP-EIAJ  
(NS)  
–20°C to 85°C  
TL1454ACD  
TL1454ACN  
TL1454ACPWR  
TL1454ACDB  
TL1454ACNS  
TL1454AY  
†
The D, DB and NS packages are available taped and reeled. Add the suffix R to the device name (e.g., TL1454ACDR). The PW package is  
available only left-end taped and reeled (indicated by the R suffix on the device type; e.g., TL1454ACPWR).  
Copyright 2002, 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
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...27

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TL1454ACPW 替代型号

型号 品牌 替代类型 描述 数据表
TL1454ACPWRG4 TI

完全替代

 1A DUAL SWITCHING CONTROLLER, 2000kHz SWITCHING FREQ-MAX, PDSO16, GREEN, TSSOP-16
TL1454ACPWR TI

完全替代

 DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT
TL1454ACPWG4 TI

功能相似

 1A DUAL SWITCHING CONTROLLER, 2000kHz SWITCHING FREQ-MAX, PDSO16, GREEN, TSSOP-16

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