MB39A104_06 Datasheet, PDF (21/38 Pages) Fujitsu Component Limited. – 2-ch DC/DC Converter IC with Overcurrent Protection

MB39A104
■ I/O EQUIVALENT CIRCUIT
〈〈Reference voltage block〉〉
VCC ⁷
1.24 V
ESD
protection
element
+
−
77.8
kΩ
24.8
kΩ
GND ¹⁸
ESD
protection
element
17 VREF
ESD
protection
element
〈〈Control block〉〉
CTL ²⁴
72
kΩ
104
kΩ
GND
〈〈Soft-start block〉〉
VREF
(5.0 V)
VCC
CSX
GND
〈〈Short-circuit detection block〉〉
VREF
(5.0 V)
2 kΩ
8 CSCP
GND
〈〈Triangular wave oscillator
block (RT) 〉〉
VCC
(3.1 V)
〈〈Triangular wave oscillator
(CT) block〉〉
(3.1 V)
1.35 V +
−
12 RT
CT 13
GND
GND
〈〈Error amplifier block (CH1, CH2) 〉〉
VCC
VREF
(5.0 V)
−INEX
CSX
1.24 V
〈〈Overcurrent protection circuit block〉〉
VCC
VCCO
ILIMX
VSX
FBX
GND
〈〈PWM comparator
block (CH1, CH2) 〉〉
VCC
FBX
DTCX
GND
GND
〈〈Bias voltage block〉〉
VCC
VCCO
CT
GND
2 VH
GNDO
GNDO
〈〈Output block (CH1, CH2) 〉〉
VCCO 1
O
VH
GNDO 23
X : Each channel No.
21