MB3883 Datasheet, PDF (7/39 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

MB3883
• Block diagram (Expansion 1/2)
FB1 35
−IN1 34
DTC1 36
FB2 32
−IN2 31
DTC2 33
FB3 29
−IN3 28
DTC3 30
Error
Amp.1
−
+
+
1.25 VSCP
− Comp.1
+
+
1.0 V
Error
− ^Amp.2
+
+
1.25 VSCP
− Comp.2
+
+
1.0 V
Error
Amp.3
−
+
+
1.25 VSCP
− Comp.3
+
+
1.0 V
PWM
Comp.
+ ^1-1
+
−
PWM
Comp.
VB1 1-2
+
−
PWM
Comp.
2-1
+
+
−
PWM
VB1
Comp.
2-2
+
−
PWM
Comp.3
+
+
−
−IN (A) 4 9
OUT (A) 4 10
FB4 11
−IN4 12
−IN (S) 4 13
DTC4 14
INV
Amp.4
−
+
Error
− ^Amp.4
+
+
1.25 VSCP
− Comp.4
+
+
1.0 V
PWM
Comp.4
+
+
−
CH1
Drive
1-1
42 VCC (O)
37 OUT1-1
Drive
1-2
38 OUT1-2
CH2
Drive
2-1
39 OUT2-1
Drive
2-2
40 OUT2-2
CH3
Drive
3
41 OUT3
CH4
Drive
4
43 OUT4
7