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TPPM0302DGNG4 PDF预览

TPPM0302DGNG4

更新时间: 2024-11-06 01:06:55
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德州仪器 - TI /
页数 文件大小 规格书
16页 414K
描述
400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT AND POK

TPPM0302DGNG4 数据手册

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TPPM0302  
400-mA LOW-DROPOUT REGULATOR  
WITH AUXILIARY POWER MANAGEMENT AND POK  
SLVS316 – NOVEMBER 2000  
DGN PACKAGE  
(TOP VIEW)  
Automatic Input Voltage Source Selection  
Glitch-Free Regulated Output  
5-V Input Voltage Source Detector With  
Hysteresis  
5VAUX  
5VCC  
NC  
1
2
3
4
8
7
6
5
GND  
NC  
3.3VOUT  
3.3VAUX  
400-mA Load Current Capability With 5-V or  
3.3-V Input Source  
POK  
Power OK Feature Based on Voltage  
Supervisor of 3.3VOUT  
NC – No connect  
Low r  
Auxiliary Switch  
DS(on)  
Thermally Enhanced PowerPAD  
Packaging Concept for Efficient Heat  
Management  
description  
The TPPM0302 is a low-dropout regulator with auxiliary power management that provides a constant 3.3-V  
supply at the output capable of driving a 400-mA load.  
The TPPM0302 provides a regulated power output for systems that have multiple input sources and require a  
constant voltage source with a low-dropout voltage. This is a single output, multiple input, intelligent power  
source selection device with a low-dropout regulator for either 5VCC or 5VAUX inputs, and a low-resistance  
bypass switch for the 3.3VAUX input.  
Transitions may occur from one input supply to another without generating a glitch, outside of the specification  
range, on the 3.3-V output. The device has an incorporated reverse blocking scheme to prevent excess leakage  
from the input terminals in the event that the output voltage is greater than the input voltage. The output voltage  
is continually monitored for constant output, and any deviation from the internal set limit (2.8 V) is reported by  
a low signal on the POK output.  
The input voltage is prioritized in the following order: 5VCC, 5VAUX, and 3.3VAUX.  
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.  
PowerPAD is a trademark of Texas Instruments.  
Copyright 2000, 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  

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