MB3785A Datasheet, PDF (2/29 Pages) Fujitsu Component Limited. – Switching Regulator Controller (4 Channels plus High-Precision, High-Frequency Capabilities)

MB3785A
(Continued)
• Output circuit
- The drive output for PNP transistors is the totem-pole type allowing the on-current and off-current values to
be set independently.
• Adjustable dead time over the entire duty ratio range
• Built-in standby and output control functions
• High-density mounting possible: 48-pin LQFP package
s PIN ASSIGNMENT
(TOP VIEW)
Ca1
Cb2
Ca2
DTC1
FB1
–IN1 (E)
+IN1 (E)
–IN1 (C)
DTC2
FB2
–IN2 (E)
+IN2 (E)
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
Ca4
Cb3
Ca3
DTC4
FB4
–IN4 (E)
+IN4 (E)
–IN4 (C)
DTC3
FB3
–IN3 (E)
+IN3 (E)
(FPT-48P-M05)
Each alphabet in parentheses following the pin symbol indicates the input pin of the next circuit.
(C) denotes a comparator.
(E) denotes an error amplifier.
2