MB3881 Datasheet, PDF (22/40 Pages) Fujitsu Component Limited. – 8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down

MB3881
s SETTING THE OUTPUT VOLTAGE
• CH1 to CH4
VO
FB1
47
R1
46
−IN1
R2
Error
Amp.1
−
+
+
1.25 V
VO = ^{1.25 V}
R2
(R1 + R2)
SCP
− ^Comp.1
+
+
1.0 V
• CH5, CH6
VO
R1
21
−IN5
R2
Error
Amp.5
−
+
+
aV
VO = ^bV
R2
(R1 + R2)
(aV > bV)
23
−IN5(C)
22
+IN5
bV
18
OVP
0.6 V
SCP
− ^Comp.5
+
22