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TPPM0302 Datasheet

  • TPPM0302

  • 400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT...

  • 241.45KB

  • 12頁

  • TI

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TPPM0302
400-mA LOW-DROPOUT REGULATOR
WITH AUXILIARY POWER MANAGEMENT AND POK
SLVS316 鈥?NOVEMBER 2000
D
D
D
D
D
D
D
Automatic Input Voltage Source Selection
Glitch-Free Regulated Output
5-V Input Voltage Source Detector With
Hysteresis
400-mA Load Current Capability With 5-V or
3.3-V Input Source
Power OK Feature Based on Voltage
Supervisor of 3.3VOUT
Low r
DS(on)
Auxiliary Switch
Thermally Enhanced PowerPAD鈩?/div>
Packaging Concept for Efficient Heat
Management
DGN PACKAGE
(TOP VIEW)
5VAUX
5VCC
3.3VOUT
3.3VAUX
1
2
3
4
8
7
6
5
NC
GND
NC
POK
NC 鈥?No connect
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 (鈮?.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.
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.
Copyright
漏
2000, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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