MD1421N
DC-DC Converter Power IC
5V
N/C 7,10,15,17,22,24,29,31
R/C L.Active
Vref 28
ON /OFF Control
6 Vcc Vboot 8
UVLO Start= 7.2 V Stop= 6.7 V
BOOT Vref= 6.5V
VB 25
High Side Vref= VOUT+ 5.8V
VGH 23
VDD 18 21
27 3.3V/5V
Bandgap Reference 5.0V 5%
100 150
High / Low MOS OFF
High Side Driver
Error Amp
PWM p
2.45V
OSC f =250k Hz
3V 1V
Q RS
Dead Time Control
Low Side Vref=6.5V
Low Side Driver
CLM Vth= 0.1 0.2V
VOUT 11 14
P.GND 16
32 30 amp- amp OUT
1 S/S
4,26
F/B OCL+...
