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BA41W12SAT 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BA41W12SAT은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 BA41W12SAT 자료 제공

부품번호 BA41W12SAT 기능
기능 Dual Output Voltage Regulator with Power Saving
제조업체 ROHM Semiconductor
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BA41W12SAT 데이터시트, 핀배열, 회로
Regulator ICs
BA41W12SAT
Dual output voltage regulator with power
saving
BA41W12SAT
The BA41W12SAT is a general-purpose power supply with outputs : 8V, 1A and 8V, 500mA. The IC is available in a
compact TO220FP-5 package. The outputs can be turned off during the power saving state with a built-in switch. Also
built in the IC are an overcurrent protection circuit, an overvoltage protection circuit, and a thermal shutdown circuit.
zApplications
Car audio systems, VCRs, facsimiles, air conditions, and other household and industrial equipment
zFeatures
1) Minimum I / O voltage differential is 0.5V or less.
2) Built-in protection circuits against overcurrent, over voltage, and overheat.
3) Available in a compact TO220FP-5 package (pins are bendable)
4) Zero power saving current. (Typ.)
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Power supply voltage
Power dissipation
VCC
Pd
35
20001
Operating temperature
Topr
40~+85
Storage temperature
Tstg
55~+150
Peak applied voltage
VCCPeak
502
1 Reduced by 16mW for each increase in Ta of 1˚C over 25˚C.
2 Applied time is less than 200ms (tr1ms).
tr1ms
50V
35V
Max.200ms
Unit
V
mW
˚C
˚C
V
0V
zRecommended operating conditions (Ta=25°C)
Parameter
Power supply voltage
Symbol
VCC
Min.
9.0
Typ.
13
Max.
25
Unit
V




BA41W12SAT pdf, 반도체, 판매, 대치품
Regulator ICs
zMeasurement circuits
0.33µ
VCC
VCC
CTL GND
OUT1
OUT2
5V
+ 22µ
BA41W12SAT
+
22µ
V
IO2
V
IO1
VCC=13V,
VCC=13V,
VCC=925V,
VCC=925V,
VCC=13V,
VCC=13V,
VCC=13V
VCC=13V
IO=500mA
IO=350mA
IO=500mA
IO=350mA
IO=5mA1A
IO=5mA500mA
when measuring output voltage 1
when measuring output voltage 2
when measuring input stability 1
when measuring input stability 2
when measuring load reguration 1
when measuring load reguration 2
when measuring output current capacity 1
when measuring output current capacity 2
Fig.1 Circuit for measuring output voltage, input stability, load regulation, and output current capacity
VCC
105W
OUT1
VCC
+ 0.33µ
100µ
eIN=1Vrms
f=120Hz
CTL GND OUT2
+
5V 22µ
+ 22µ
350mA
VCC=13V, IO1=500mA when measuring the ripple rejection ratio 1
VCC=13V, IO2=350mA when measuring the ripple rejection ratio 2
Fig.2 Circuit for measuring ripple rejection ratio
500mA

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BA41W12SAT 전자부품, 판매, 대치품
Regulator ICs
BA41W12SAT
zOperation notes
(1) Although the circuit examples included in this hand-book are highly recommendable for general use, you should be
thoroughly familiar with circuit characteristics as they relate to your own use conditions. If you intend to change the
number of external circuits, leave an ample margin, taking into account discrepancies in both static and dynamic
characteristics of external parts and Rohm ICs. In addition, please be advised that Rohm cannot provide complete
assurance regarding patent rights.
(2) Operating power supply voltage
When operating within the proper ranges of power supply voltage and ambient temperature, most circuit functions
are guaranteed. Although the rated values of electrical characteristics cannot be absolutely guaranteed,
characteristic values do not change drastically within the proper rages.
(3) Power dissipation (Pd)
Refer to the power dissipation characteristics in Fig.12. If power dissipation exceeds the allowable limit, the fuctionality
of the IC will be degraded (such as reduction of current capacity by increased chip temperature). Make sure to use the
IC within the allowable range of power dissipation with a sufficient margin.
(4) Preventing oscillation at each output and bypass capacitor
To stop output oscillation, make sure to connect a capacitor between GND and each output pin (capacitance of at
least 10µF over the whole operating temperature is recommended). Oscillation can occur if capacitance is susceptible
to temperature. We recommended using a tantalum capacitor with minimal changes in capacitance. Also,
output can be further stabilized by connecting a bypass capacitor of about 0.33µF between VCC and GND.
(5) Overcurrent protection circuit
An overcurrent protection circuit is installed in each output system, based on the respective output current. This
prevents IC destruction due to 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 current suddenly flows through a large capacitor. Note that theses protection
circuits are only good for preventing damage from sudden accidents. Make sure your design does not case the
protection circuit to operate continuously under transitional conditions (for instance, if output is clamped at 1VF or
higher, short mode circuit operates at 1VF or lower). Note that the capacitance is negatively correlated with
temperature.
(6) Thermal protection circuit
A built-in thermal protection circuit prevents thermal damage to the IC. All outputs are turned off when the circuit
operates, and revert to the original state when the temperature drops to a certain level.
(7) We recommend installing a bypass line in your application if there is a mode where potential difference between each
output and input (VCC) or GND is reversed from the normal state. A reversed mode may cause damage to the IC.
(8) Although the quality of this IC is rigorously controlled, the IC may be destroyed when the applied voltage or the
operating temperature exceeds their absolute maximum ratings. Because short mode or open mode cannot be
specified when the IC is destroyed, be sure to take physical safety measures, such as fusing, if any of the absolute
maximum ratings might be exceeded.

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관련 데이터시트

부품번호상세설명 및 기능제조사
BA41W12SAT

Dual Output Voltage Regulator with Power Saving

ROHM Semiconductor
ROHM Semiconductor

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