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DC-DC Converter Power IC
N/C 7,9,10,15,17,22,24,29,31
Vref R/C L.Active
ON
28
6
Vcc Vboot
8
VB
25
VG
23 VDD 18 21
Vi
5
ON/OFF Control
UVLO Start= 7.2V Stop= 6.7V
BOOT Vref= 6.5V
HighSide Vref=VOUT+5.8V
100 Bandgap Reference 5.0V 5% TSD
150 Main Switch MOS OFF
HighSide Driver
GND
Error Amp
PWM Comp
VOUT 11 14
Vo
3V 2.45V OSC f=250kHz R 1V Q S
GND
CLM Vth= 0.1 0.2V
amp-
32
30
ampOUT
1 S/S
2
3 OCL-
4,26 OCL+ GND
16
P.GND
5.3V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Speciļ¬cations
19
SHINDENGEN MD1322N P
1 2 3 4, 26 5 6 7, 9, 10, 15, 17, 22, 24, 29, 31 8 11 14
S/S OCLOCL+ GND R/C VCC N/C Vboot VOUT
16 18 21 23 25 27 28 30 32
P.GND VDD VG VB VTS Vref ampOUT amp-
www.shindengen.co.
MD1322N Datasheet
