Rainbow Electronics BA3940A User Manual

Regulator ICs

System power supply for CD radio
cassette players

BA3940A

With built-in 9V, 7V, and 5V outputs, the BA3940A system power supply IC is best suited for use in CD radio cassette
players.

Applications
CD radio cassette players

Features

1) One 9V output, two 7V outputs (switched by MODE
SW, only one output is available at the same time)
and one 5V output are built in.

2) Output current limit circuit protects the IC against
short-circuiting damage.

3) Thermal protection circuit prevents heat damage to
the IC.

4) Compact SIP-M12 package allows a large power dis­sipation.

Absolute maximum ratings (Ta = 25C)

Recommended operating conditions (Ta = 25C)

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Regulator ICs BA3940A

Block diagram

Pin descriptions

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Regulator ICs BA3940A

Input / output circuits

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