TDA8138 ST Microelectronics, TDA8138 Datasheet

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TDA8138

Manufacturer Part Number
TDA8138
Description
5.1V+ 12V REGULATOR WITH DISABLE AND RESET
Manufacturer
ST Microelectronics
Datasheet

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TDA8138A
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TDA8138B
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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.
May 1993
PIN CONNECTIONS
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)
Tab. connected to Pin 5
5.1V +12V REGULATOR WITH DISABLE AND RESET
SIP9
9
8
7
6
5
4
3
2
1
OUTPUT 1
OUTPUT 2
N.C.
RESET
GROUND
DISABLE
DEL. CAP.
INPUT 2
INPUT 1
Tab. connected to Pin 4
ORDER CODE : TDA8138A / TDA8138B
HEPTAWATT
7
6
5
4
3
2
1
ORDER CODE : TDA8138
(Plastic Package)
(Plastic Package)
HEPTAWAT
SIP9
OUTPUT1
OUTPUT2
GROUND
DISABLEFOR TDA8138A
DEL. CAPA FOR TDA8138B
INPUT 1
INPUT 2
N.C. FOR TDA8138A
RESET FOR TDA8138B
TDA8138
1/6

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TDA8138 Summary of contents

Page 1

... 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) ...

Page 2

... Maximum Thermal Resistance Junction-case for SIP9 th (j-c) Maximum Thermal Resistance Junction-case for Heptawatt R Maximum Thermal Resistance Junction-ambient for SIP9 th (j-a) T Maximum Recommended Junction Temperature j 2 REFERENCE OUT 1 PROTECTION RESET DISABLE OUT 2 TDA8138 5 Parameter Parameter 9 OUT 1 6 RESET 3 DELAY CAPACITOR 8 OUT 2 Value Unit ...

Page 3

... Down Note : Safe permanent short-circuit is only guaranteed for input voltages up to 16V. CIRCUIT DESCRIPTION The TDA8138 is a dual voltage regulator with Reset and Disable (TD8138A : Disable only, TDA8138B : Reset only). The two regulation parts are supplied from one voltage reference circuit trimmed by zener zap during EWS test ...

Page 4

... TDA8138 Figure 1 REF OUT 1 REG Figure 2 5.1V 4.9V 4.85V RESET TYPICAL APPLICATION (SIP9 package) V IN1 V IN2 C1 4 RESET 0 TDA8138 DISABLE RESET 2.5V 0.6V Vout LOW ...

Page 5

... L5 L3 Dia Millimeters Typ. Max. 4.8 1.37 2.8 1.35 0.55 08 0.9 2.54 2.67 5.08 5.21 7.62 7.8 10.4 10.4 16.97 14.92 21.54 22.62 3 15.8 6.6 2.8 5.08 3.85 TDA8138 Inches Min. Typ. 0.189 0.054 0.094 0.110 0.047 0.053 0.014 0.022 0.024 0.031 0.035 0.095 0.100 0.105 0.193 0.200 0.205 0.295 0.300 0.307 0.409 0.396 0.409 0.668 0.587 0.848 0.891 0.102 0.118 0.594 ...

Page 6

... TDA8138 PACKAGE MECHANICAL DATA 9 PINS - PLASTIC SIP Dimensions Min Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use ...

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