ROHM BA3933 Datasheet
Regulator ICs
Reference voltage power supply
BA3933
The BA3933 is a monolithic reference voltage power supply IC for use in CD radio cassette players.
Applications
CD radio cassette players, mini-component stereo audio systems
Features
1) With 7.5V output for audio power supply, 5V output
for microcontrollers, 5V output for radio 5 and 7.5V
outputs for CD players, 9V output for motor drivers,
the IC is best suited for CD radio cassette players.
2) Precise power supply (5V ± 0.1V) can be obtained by
using external reference voltage input (only AUDIO
output has an internal reference voltage system).
Absolute maximum ratings (Ta = 25C)
3) Zero standby current. (Typ.)
4) Output current limit circuit protects the IC against
short-circuiting damage.
5) Compact SIP-M12 package allows a large power dissipation (3W: no heat sink).
6) Thermal protection circuit prevents heat damage to
the IC.
Recommended operating conditions (Topr = 25C)
160
Regulator ICs BA3933
Block diagram
Pin descriptions
161
Regulator ICs BA3933
Input / output circuits
162
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