TDA3666 查看數據表（PDF） - Philips Electronics

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TDA3666

Very low dropout voltage/quiescent current 10 V voltage regulator

Philips Electronics 

Philips Semiconductors

Very low dropout voltage/quiescent current

10 V voltage regulator

Preliminary specification

TDA3666

handbook, halfpage

GND

4

TDA3666

1

2

3

VP GND REG

MGU151

handbook, halfpage

REG 1

GND 2

GND 3

n.c. 4

8 VP

7 GND

TDA3666AT

6 GND

5 n.c.

MBL129

Fig.2 Pin configuration of SO4.

Fig.3 Pin configuration of SO8.

FUNCTIONAL DESCRIPTION

The TDA3666 is a fixed 10 V regulator which can deliver

output currents up to 100 mA. The regulator is available in

SO8 and SO4 packages. The regulator is intended for

portable, mains, telephone and automotive applications.

To increase the lifetime of batteries, a specially built-in

clamp circuit keeps the quiescent current of this regulator

very low, also in dropout and full load conditions.

The regulator remains operational down to very low supply

voltages and below this voltage it switches off.

A temperature protection circuit is included which switches

the regulator output off at a junction temperature

above 150 °C.

A new output circuit guarantees the stability of the

regulator for a capacitor output circuit with an ESR up

to 22 Ω (see Figs 5 and 6). This is very attractive as the

ESR of an electrolytic capacitor increases strongly at low

temperatures (no expensive tantalum capacitor is

required).

2000 Apr 26

4

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