TDA3672AT 查看數據表（PDF） - Philips Electronics

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TDA3672AT

Very low dropout voltage/quiescent current 3.0 V voltage regulator with enable

Philips Electronics 

Philips Semiconductors

Very low dropout voltage/quiescent current

3.0 V voltage regulator with enable

Preliminary specification

TDA3672

FUNCTIONAL DESCRIPTION

The TDA3672 is a fixed 3.0 V regulator which can deliver

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

an SO8 package with fused centre pins connected to the

lead frame. 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 operating down to very low supply

voltages and below this voltage it switches off.

A temperature protection circuit is included, which

switches off the regulator output 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 20 Ω (see Fig.5). If only a 100 nF capacitor is used, the

regulator is fully stable when IREG > 200 µA. This is very

attractive as the ESR of an electrolytic capacitor increases

strongly at low temperatures (no expensive tantalum

capacitor is required).

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

SYMBOL

VP

VP(rp)

Ptot

PARAMETER

supply voltage

reverse polarity supply voltage

total power dissipation

Tstg

Tamb

Tj

storage temperature

ambient temperature

junction temperature

CONDITIONS

non-operating

temperature of copper area

is 25 °C

non-operating

operating

operating

MIN.

−

−

−

−55

−40

−40

MAX.

45

−25

4.1

UNIT

V

V

W

+150

°C

+125

°C

+150

°C

THERMAL CHARACTERISTICS

SYMBOL

Rth(j-a)

Rth(j-c)

PARAMETER

thermal resistance from junction to ambient

thermal resistance from junction to case

CONDITIONS

in free air; soldered in

to centre pins; soldered in

VALUE

125

30

UNIT

K/W

K/W

QUALITY SPECIFICATION

In accordance with “SNW-FQ-611E”.

2000 Apr 26

4

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