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PDF BA3933 Data sheet ( Hoja de datos )
| Número de pieza | BA3933 | |
| Descripción | Reference voltage power supply | |
| Fabricantes | ROHM Semiconductor | |
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Regulator ICs
Reference voltage power supply
BA3933
The BA3933 is a monolithic reference voltage power supply IC for use in CD radio cassette players.
FApplications
CD radio cassette players, mini-component stereo audio systems
FFeatures
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).
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 dis-
sipation (3W: no heat sink).
6) Thermal protection circuit prevents heat damage to
the IC.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Topr = 25_C)
160
1 page  
Regulator ICs
BA3933
FCircuit operation
(1) Timing chart
(2) Estimate of allowable power dissipation
Except under transitional conditions, the power dissipa-
tion of this IC is 3W per unit at 25_C. See Fig. 1 for ther-
mal derating characteristics, including some cases
where heat sinks are used.
FThermal derating characteristics
AUDIO 7.5V, MOTOR 9V, and COM 5V are output re-
gardless of MODE SW.
RADIO 5V rises when MODE SW is 1.4V (typical), and
CD 5V rises when MODE SW is 3.2V (typical).
164
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet BA3933.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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