MB39A112 Datasheet, PDF (18/35 Pages) Fujitsu Component Limited. – 3-ch DC/DC Converter IC

MB39A112
s I/O EQUIVALENT CIRCUIT
<<Short-circuit detection block>>
<<Triangular wave oscillator block
(RT) >>
<<Triangular wave oscillator block
(CT) >>
VCC ⁴
VREF
(3.5 V)
ESD
protection
element
GND ⁷
VCC
VREF
ESD
protection
(3.5 V)
element
2 kΩ
1.2 V ⁺
14 _CSCP
−
ESD
protection
element
GND
VCC
VREF
(3.5 V)
CT 6
5 RT
GND
<<Soft-start block>>
VCC
VREF
(3.5 V)
CSX
<<Error amplifier block (CH1) >>
VCC
VREF
(3.5 V)
−INE1 2
CS1
1.00 V
3 _FB1
GND
GND
<<Error amplifier block (CH2, CH3) >>
VCC
VREF
(3.5 V)
CSX
1.23 V
<<PWM comparator block>>
VCC
FBX
CT
FBX
GND
GND
<<Bias voltage block>>
VCC
VCCO
<<Output block>>
VCCO ²⁰
GND
16 VH
GNDO
VH
GNDO ¹⁵
X : Each channel No.
18
OUTX