MB3827 Datasheet, PDF (37/41 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

MB3827
• Enlarged view of C
FB7 ₅
0.1 µF
6
−IN7-1
H
8
+IN7
I
−IN7-2
7
Error
− ^Amp.7
+
10 kΩ
Voffset
1.6 V
DTC7 ₉
1 µF
23
−IN(C)8
VB : 2 V
48.5 kΩ
PWM
− ^Comp.7
0.77 V _−
+
30.1 kΩ
SCP
Comp.7
+
−
VSCP
0.9 V
SCP
− ^Comp.8
+
1.26 V
CH7
Drive
7
VG(O)
(8 V)
VSS(O)
(2 V)
H
I
RB491D
4.7 µF
4.7 µF
MA796
OUT7
1
100 pF
24 kΩ
MA796
2
FMMT617
4.7 µF
RB7
VCC(O)
(5.2 V)
GND(O)
5, 6, 7
3
CTL1-4 _{CS CTL}
CTL5 28
Logic
CTL6 29
Buff
Buff ×0.8
Power
+ ^Comp.
−
0.6 V
−1.8 V
−1.1 V
−1.8 V
−1.1 V
−0.8 V
−0.3 V
CS1-6 ₃₀
0.1 µF
UVLO
2V
32
VB
0.1 µF
OSC
33 34
RT CT
18 kΩ ^{100 pF}
SCP
31
CSCP
0.1 µF
Power
Ref ON/OFF
CTL
2.5 V
24
25
VREF GND
4 XENB1-6
26 ^VCC
27 ^{CTL1-4, 7}
H: Power/CH1 to 6 in OFF
L: Control by CTL terminal
function
H: ON (Power/CH1 to 4,7)
L: OFF (Standby mode)
0.1 µF
FMMT717: ZETEX plc.
FMMT617: ZETEX plc.
CPH3403: SANYO Electric Co., Ltd.
U1FWJ44N:TOSHIBA CORPORATION
MA796: Matsushita Electronic
Components Co., Ltd.
2SD1621: SANYO Electric Co., Ltd.
RB491D: ROHM CO.LTD
37