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TDA8138 (5.1V+12V regulator with Disable and Reset)
(1) General 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.
A internal reset cuicuit generates a reset pulse when the output 1 decrease below the regulated voltage value.
Output 2 can be disabled by TTL input.
Shot circuit and themal protections are included.
(2) Feature
•
output currents up to 1A
•
ixed 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
(3) Block Diagram (4) Pin Description
PIN SYMBOL DESCRIPTION
1 V in 1 input 1
2 V in 2 input 2
3 C e Delay capacitor
4 V dis disable
5 GND ground
6 RST reset
7 n.c
8 V out 2 output 2 (12V)
9 V out 1 output 1 (5.1V)