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BA3950A 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BA3950A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 BA3950A 자료 제공

부품번호 BA3950A 기능
기능 System power supply for CD player equipped audio systems
제조업체 ROHM Semiconductor
로고 ROHM Semiconductor 로고


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BA3950A 데이터시트, 핀배열, 회로
Regulator ICs
System power supply for CD player-
equipped audio systems
BA3950A
With 13.3V (external transistor required), 12V, 10V, and 5.6V outputs, the BA3950A power supply IC is best suited for
CD player-equipped audio systems.
FApplications
CD player-equipped audio systems
FFeatures
1) 13.3V (external transistor required), 12V, 10V, and
5.6V outputs are built in (one output for each volt-
age).
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 dis-
sipation.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
199




BA3950A pdf, 반도체, 판매, 대치품
Regulator ICs
FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 8V)
BA3950A
202

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BA3950A 전자부품, 판매, 대치품
Regulator ICs
(4) Overcurrent protection circuit
An overcurrent protection circuit is installed in each out-
put system, based on the respective output current. This
prevents IC destruction by overcurrent, by limiting the
current with a curve shape of “7” in the voltage-current
graph. The IC is designed with margins so that current
flow will be restricted and latching will be prevented even
if a large current suddenly flows through a large capaci-
tor. Note that these protection circuits are only good for
preventing damage from sudden accidents. Make sure
your design does not cause the protection circuit to oper-
ate continuously under transitional conditions (for
instance, when output is clamped at 1VF or higher). Note
that the circuit ability is negatively correlated with temper-
ature.
FThermal derating curve
BA3950A
(5) Thermal protection circuit
A built-in thermal protection circuit prevents thermal
damage to the IC. All outputs are switched OFF when the
circuit operates, and revert to the original state when
temperature drops to a certain level.
(6) Improving ripple rejection by capacitors
Ripple rejection of the CDP and MAIN outputs can be im-
proved by installing a capacitor that reduces the AC gain.
(7) Malfunction in intense electric fields
Note that bringing the IC into an intense electric field
(such as a radio relay station) may result in malfunction.
Estimate of allowable power dissipation (PMAX.)
S Power consumed by CDP
S Power consumed by µ-COM
S Power consumed by MAIN
S Power consumed internally by each circuit
P1 = (VCC * CDP) maximum load current of CDP
P2 = {VCC * (µ-COM)} maximum load current of µ-COM
P3 = (VCC * MAIN) maximum load current of MAIN
P4 = VCC supply current
PMAX. = P1 ) P2 ) P3 ) P4
205

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관련 데이터시트

부품번호상세설명 및 기능제조사
BA3950

System power supply for CD player equipped audio systems

ROHM Semiconductor
ROHM Semiconductor
BA3950A

System power supply for CD player equipped audio systems

ROHM Semiconductor
ROHM Semiconductor

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