MB3827 Datasheet, PDF (4/41 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

MB3827
(Continued)
Pin No.
10
11
13
CH 6 12
14
15
63
5
6
8
7
9
1
2
Symbol
–IN(A)6
OUT(A)6
FB6
–IN6
–IN4(C)6
DTC6
OUT6
FB7
–IN7-1
+IN7
–IN7-2
DTC7
OUT7
RB7
I/O
Descriptions
I Channel 6 inverted amplifier input pin.
O Channel 6 inverted amplifier output pin.
O Channel 6 error amplifier output pin.
I Channel 6 error amplifier inverted input pin.
I Channel 6 short detection comparator input pin.
I Channel 6 dead time control pin.
O Channel 6 output pin.
O Channel 7 error amplifier output pin.
I Channel 7 error amplifier 1 inverted input pin.
I Channel 7 error amplifier non-inverted input pin.
I Channel 7 error amplifier 2 inverted input pin.
I Channel 7 dead time control pin.
O Channel 7 output pin.
— Channel 7 output current setting pin.
33
RT
— Triangular wave frequency setting resistor connection pin.
34
CT
— Triangular wave frequency setting capacitor connection pin.
27 CTL1-4, 7
Power supply control circuit pin.(channel 1 to 4 and 7)
I “H” level: Power supply active mode
“L” level: Standby mode
28
CTL5
Channel 5 control circuit pin.
I
When CTL1-4,7 pins = “H” level
“H” level: Channel 5 in active mode
“L” level: Channel 5 in standby mode
29
CTL6
Channel 6 control circuit pin.
I
When CTL1-4,7 pins = “H” level
“H” level: Channel 6 in active mode
“L” level: Channel 6 in standby mode
23 –IN(C)8 I Short detection comparator input pin.
31 CSCP — Short protection circuit capacitor connection pin.
30 CS1-6 — Soft start circuit capacitor connection pin (channel 1 to 6).
VREF control pin (channel 1 to 6 output control pin).
4
XENB1-6
I
When CTL1-4, 7 pin = “H”
“H” level: VREF “L” level, channel 1 to 6 output “OFF”
“L” level: VREF “H” level, channel 1 to 6 output “active”
(Continued)
4