MB3785A Datasheet, PDF (3/29 Pages) Fujitsu Component Limited. – Switching Regulator Controller (4 Channels plus High-Precision, High-Frequency Capabilities)

MB3785A
s PIN DESCRIPTION
Pin No.
1
48
7
6
CH1 5
8
4
47
46
3
2
12
11
CH2 10
13
9
43
44
34
35
25
26
CH3 27
24
28
41
40
36
37
30
CH4
31
32
29
Symbol
Ca1
Cb1
+IN1(E)
–IN1(E)
FB1
–IN1(C)
DTC1
VE1
OUT1
Ca2
Cb2
+IN2(E)
–IN2(E)
FB2
–IN2(C)
DTC2
VE2
OUT2
Ca3
Cb3
+IN3(E)
–IN3(E)
FB3
–IN3(C)
DTC3
VE3
OUT3
Ca4
Cb4
+IN4(E)
–IN4(E)
FB4
–IN4(C)
I/O
Description
— CH1 output transistor OFF-current setting pin. Insert a capacitor between
— ^{the Ca1 and the Cb1 pins, then set the output transistor OFF-current.}
I CH1 error amp non-inverted input pin.
I CH1 error amp inverted input pin.
O CH1 error amp output pin.
I CH1 comparator inverted input pin.
I CH1 dead time control pin.
I CH1 output current setting pin.
O CH1 totem-pole output pin.
— _{CH2 output transistor OFF-current setting pin. Insert a capacitor between}
— ^{the Ca2 and the Cb2 pins, then set the output transistor OFF-current.}
I CH2 error amp non-inverted input pin.
I CH2 error amp inverted input pin.
O CH2 error amp output pin.
I CH2 comparator inverted input pin.
I CH2 dead time control pin.
I CH2 output current setting pin.
O CH2 totem-pole output pin.
— _{CH3 output transistor OFF-current setting pin. Insert a capacitor between}
— ^{the Ca3 and the Cb3 pins, then set the output transistor OFF-current.}
I CH3 error amp non-inverted input pin.
I CH3 error amp inverted input pin.
O CH3 error amp output pin.
I CH3 comparator inverted input pin.
I CH3 dead time control pin.
I CH3 output current setting pin.
O CH3 totem-pole output pin.
— _{CH4 output transistor OFF-current setting pin. Insert a capacitor between}
— ^{the Ca4 and the Cb4 pins, then set the output transistor OFF-current.}
I CH4 error amp non-inverted input pin.
I CH4 error inverted input pin.
O CH4 error amp output pin.
I CH4 comparator inverted input pin.
(Continued)
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