TPPM0301

400-mA LOW-DROPOUT REGULATOR

WITH AUXILIARY POWER MANAGEMENT

SLVS315 – SEPTEMBER 2000

6

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

THERMAL INFORMATION

Power Dissipation Derate Curve Using

Two Square Inches of Copper Heat

Spreader on a Double-Sided PCB

Power Dissipation Derate Curve Using

Multilayer Board With The Ground

Plane for Heat Spreader

2.5

25

1.78

1

0.68

80

100

103

116

150

Ambient Temperature –

°C

NOTE: These curves are to be used for guideline purposes only. For a particular application, a more specific thermal characterization is required.

Figure 1. Power Dissipation Derating Curves

APPLICATION INFORMATION

8

TPPM0301

1

5VAUX

GND

7

2

5VCC

GND

0.1

µF

0.1

µF

4.7

µF

6

3

3.3VOUT

GND

4.7

µF

5

4

3.3VAUX

GND

0.1

µF

4.7

µF

4.7

µF

Figure 2. Typical Application Schematic