MB3883 Datasheet, PDF (5/39 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

MB3883
(Continued)
Pin No.
25
OSC
26
27
1
2
20
21
Control
22
23
24
18
15
19
42
Power
16
17
44
Symbol
RT
CT
VB
SWOUT
SWIN
CTL
CTL1, 2
CTL3
CTL4
CTL5
CSCP
CS
VCC
VCC (O)
VREF
GND
GND (O)
I/O
Descriptions
 Triangular wave frequency setting resistor connection pin.
 Triangular wave frequency setting capacitor connection pin.
O Triangular wave oscillator regulator output pin.
O Output switch control circuit output pin.
I Output switch control circuit input pin.
Power supply, CH6 control pin.
I “H” level : Power supply CH6 operating mode
“L” level : Standby mode
CH1, CH2 control pin.
I
When CTL1, 2 pin = “H” level
“H” level : CH1, CH2 operating mode
“L” level : CH1, CH2 OFF mode
CH3 control pin.
I
When CTL3 pin = “H” level
“H” level : CH3 operating mode
“L” level : CH3 OFF mode
CH4 control pin.
I
When CTL4 pin = “H” level
“H” level : CH4 operating mode
“L” level : CH4 OFF mode
CH5 control pin.
I
When CTL5 pin = “H” level
“H” level : CH5 operating mode
“L” level : CH5 OFF mode
 Short protection circuit capacitor connection pin.
 CH1to CH5 soft start circuit capacitor connection pin.
 Reference voltage and control circuit power supply pin.
 Output circuit power supply pin.
O Reference voltage output pin.
 Ground pin.
 Output circuit ground pin.
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