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參數(shù)資料
| 型號： | TL1454ACPWLE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 354K |
| 代理商： | TL1454ACPWLE |
TL1454A, TL1454AY
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS423 – MAY 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
description
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 com-
puters, 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
PLASTIC DIP
(N)
CHIP FORM
(Y)
TA
SMALL OUTLINE
(D)
TSSOP
(PW)
–20
°
C to 85
°
C
The D package is 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 LE suffix on the device type; e.g.,
TL1454ACPWLE).
TL1454ACD
TL1454ACN
TL1454ACPWLE
TL1454AY
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
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CT
RT
DTC1
IN1+
IN1–
COMP1
GND
OUT1
D, N OR PW PACKAGE
(TOP VIEW)
REF
SCP
DTC2
IN2+
IN2–
COMP2
V
CC
OUT2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TL1454ACPWR | 功能描述:DC/DC 開關(guān)控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TL1454ACPWRG4 | 功能描述:DC/DC 開關(guān)控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TL1454AY | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT |
| TL1454CD | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TL1454CDR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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