2000 Apr 25

3

Philips Semiconductors

Preliminary specification

Very low dropout voltage/quiescent current

8.5 V voltage regulator

TDA3665

BLOCK DIAGRAM

handbook, halfpage

MBL137

REGULATOR

2, 4 (2, 3, 6, 7)

3 (1)

GND

1 (8)

REG

VP

BAND GAP

TDA3665

THERMAL

PROTECTION

Fig.1 Block diagram.

Pin numbers in brackets refer to the SO8 version.

PINNING

Note

1. For the SO8 package all pins GND are connected to the lead frame and can also be used to reduce the total thermal

heat spreader.

SYMBOL

PIN

DESCRIPTION

SO4

SO8

1

8

supply voltage

GND

2 and 4

2, 3, 6 and 7

ground; note 1

REG

3

1

regulator output

n.c.

−

4 and 5

not connected