May 1993

5.1V +12V REGULATOR WITH DISABLE AND RESET

TDA8138

.

OUTPUT CURRENTS UP TO 1A

.

FIXED PRECISION OUTPUT 1 VOLTAGE

5.1V +/- 2%

.

FIXED PRECISION OUTPUT 2 VOLTAGE

12V +/- 2%

.

OUTPUT 1 WITH RESET FACILITY

.

OUTPUT 2 WITH DISABLE BY TTL INPUT

.

SHORT CIRCUIT PROTECTION AT BOTH

OUTPUTS

.

THERMAL PROTECTION

.

LOW DROP OUTPUT VOLTAGE

.

AVAILABLE ALSO IN HEPTAWATT PACKAGE

IN TWO VERSIONS : TDA8138A (DISABLE

ONLY), TDA8138B (RESET ONLY)

DESCRIPTION

The TDA8138 is a monolithic dual positive voltage

regulator designed to provide fixed precision output

voltages of 5.1V and 12V at currents up to 1A.

An internal reset circuit generates a reset pulse

when the output 1 decrease below the regulated

voltage value (for TDA8138 and TDA8138B).

Output 2 can be disabled by TTL input (for

TDA8138 and TDA8138A).

Short circuit and thermal protections are included

in all the versions.

PIN CONNECTIONS

HEPTAWAT

(Plastic Package)

ORDER CODE : TDA8138A / TDA8138B

SIP9

(Plastic Package)

ORDER CODE : TDA8138

OUTPUT1

OUTPUT2

GROUND

INPUT 2

INPUT 1

1

2

3

4

5

6

7

N.C. FOR TDA8138A

RESET FOR TDA8138B

DISABLEFOR TDA8138A

DEL. CAPA FOR TDA8138B

Tab. connected to Pin 4

HEPTAWATT

1

2

3

4

5

6

7

8

9

DEL. CAP.

DISABLE

RESET

N.C.

OUTPUT 2

OUTPUT 1

INPUT 1

INPUT 2

GROUND

Tab. connected to Pin 5

SIP9

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