MB39A105 Datasheet, PDF (4/27 Pages) Fujitsu Component Limited. – 1-ch DC/DC Converter IC for low voltage

MB39A105
s BLOCK DIAGRAM
−INE 1
VREF
Error Amp
−
++
FB 8
VREF
(0.5 V ± 1%)
SCP
Comp.
VCC SCPOD
3
4
PWM
Comp.
+
−
(0.7 V)
(0.3 V)
Drive
Nch
IO = 400 mA
at VCC = 3.3 V
5 OUT
6 GND
CSCP 2
+
(1.0 V)
−
(0.9 V)
SQ
R
UVLO
L : UVLO release
±10%
OSC
7
RT
RT Current
bias
VREF
(1.27 V)
VREF
Power
ON/OFF
CTL
4