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參數(shù)資料
| 型號： | TL1451AQPWRG4Q1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.021 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大小： | 379K |
| 代理商： | TL1451AQPWRG4Q1 |
TL1451A-Q1
DUAL PULSEWIDTHMODULATION CONTROL CIRCUITS
SGLS304A JUNE 2005 REVISED JUNE 2008
1
www.ti.com
D Qualified for Automotive Applications
D Complete PWM Power Control Circuitry
D Completely Synchronized Operation
D Internal Undervoltage Lockout Protection
D Wide Supply Voltage Range
D Internal Short-Circuit Protection
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
D Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards
description
The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two
pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A
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 1.04 V to 1.45 V. The dead-time control (DTC)
comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip
oscillator can be operated by terminating RT and CT. During low VCC conditions, the undervoltage lockout
control circuit feature locks the outputs off until the internal circuitry is operational.
The TL1451A is characterized for operation from 40
°C to 125°C.
AVAILABLE OPTIONS{
PACKAGED DEVICES}
TA
TSSOP
(PW)§
40
°C to 125°C
TL1451AQPWRQ1
For the most current package and ordering information, see the
Package Option Addendum at the end of this document, or see the TI
web site at http://www.ti.com.
Package drawings, thermal data, and symbolization are available at
http://www.ti.com/packaging.
§ The PW package is only available left-end taped and reeled.
Copyright
2008, 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.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CT
RT
ERROR
1IN +
AMPLIFIER 1
1IN
1FEEDBACK
1DTC
1OUT
GND
REF
SCP
2IN +
ERROR
2IN
AMPLIFIER 2
2FEEDBACK
2DTC
2OUT
VCC
PW PACKAGE
(TOP VIEW)
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TL1451AQPWRQ1 | 功能描述:DC/DC 開關(guān)控制器 Dual PWM Control Circuit 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 |
| TL1451C | 制造商:Panasonic Industrial Company 功能描述:IC |
| TL1451CDB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TL1451CDBR | 功能描述:DC/DC 開關(guān)控制器 Dual PWM Control Circuit 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 |
| TL1451CDBRG4 | 功能描述:DC/DC 開關(guān)控制器 Dual PWM Control Circuit 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 |
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