BA44W12 查看數據表（PDF） - ROHM Semiconductor

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BA44W12

Dual output voltage regulator with power saving

ROHM Semiconductor 

Regulator ICs

BA44W12SAT

!Measurement circuits

0.33µ

VCC

VCC

CTL GND

OUT1

OUT2

5V

+ 22µ

+

22µ

V

IO2

V

IO1

VCC=13V,

VCC=13V,

VCC=9→25V,

VCC=9→25V,

VCC=13V,

VCC=13V,

VCC=13V

VCC=13V

IO=500mA

IO=350mA

IO=500mA

IO=350mA

IO=5mA→1A

IO=5mA→500mA

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

10Ω5W

OUT1

VCC

+

0.33µ

100µ

eIN=1Vrms

f=120Hz

CTL GND OUT2

+

5V

22µ

+ 22µ

350mA

VCC=13V, IO1=500mA when meauring the ripple rejection ratio 1

VCC=13V, IO2=350mA when meauring the ripple rejection ratio 2

Fig.2 Circuit for measuring ripple rejection ratio

500mA

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