BA44W12SAT Datasheet, PDF (4/9 Pages) Rohm – Dual output voltage regulator with power saving

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