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TPPM0302DGN 数据表(PDF) 10 Page - Texas Instruments

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部件名 TPPM0302DGN
功能描述  400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT AND POK
Download  16 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TPPM0302DGN 数据表(HTML) 10 Page - Texas Instruments

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TPPM0302
400-mA LOW-DROPOUT REGULATOR
WITH AUXILIARY POWER MANAGEMENT AND POK
SLVS316 – NOVEMBER 2000
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
In a multilayer board application, the thermal vias are the primary method of heat transfer from the package
thermal pad to the internal ground plane. The efficiency of this method depends on several factors (die area,
number of thermal vias, thickness of copper) Consult the
PowerPAD Thermally Enhanced Package Technical
Brief.
single-layer PCB
Package Outline
Use as Much Copper Area
as Possible for Heat Spread
Package Thermal Pad
Figure 15. Land Configuration for Single-layer PCB
Layout recommendations for a single-layer PCB utilize as much copper area as possible for power
management.
In a single layer board application, the thermal pad is attached to a heat spreader (copper area) by using low
thermal impedance attachment method (solder paste or thermal conductive epoxy).
In both of the methods mentioned above, it is advisable to use as many copper traces as possible to dissipate
the heat.
IMPORTANT
If the attachment method is NOT implemented correctly, the
functionality of the product is not efficient. Power dissipation
capability will be adversely affected if the device is incorrectly
mounted onto the circuit board.
8
TPPM0302
1
5VAUX
NC
7
2
5VCC
GND
0.1
µF
0.1
µF
4.7
µF
6
3
3.3VOUT
NC
4.7
µF
5
4
3.3VAUX
POK
0.1
µF
4.7
µF
4.7
µF
3.3VOUT
5 k
Figure 16. Typical Application Schematic


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