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PDF ( 数据手册 , 数据表 ) MD1421N

零件编号 MD1421N
描述 DC-DC Converter Power IC
制造商 Shindengen Electric Mfg.Co.Ltd
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MD1421N 数据手册, 描述, 功能
DC-DC Converter Power IC
5V
N/C 7,10,15,17,22,24,29,31
R/C
L.Active
5
ON
Vref 28
ON /OFF
Control
6 Vcc Vboot 8
UVLO
Start= 7.2 V
Stop= 6.7 V
BOOT
Vref= 6.5V
VB 25
HighSide
Vref= VOUT+ 5.8V
VGH 23
VDD
18 21
27
3.3V/5V
Bandgap
Reference
5.0V 5%
TSD
100 150
High / Low
MOS OFF
HighSide
Driver
Error Amp
PWM Comp
2.45V
OSC
f =250kHz
3V
1V
Q
RS
Dead Time
Control
LowSide
Vref=6.5V
LowSide
Driver
CLM Vth=
0.1 0.2V
VOUT
11 14
P.GND
16
32 30
amp- ampOUT
1
S/S
23
4,26
9
F/B OCL+ GND
VGL
OCL-
Vi
GND
Vo
GND
1 32
2
3
4
31
30
29
1 S/S 11 14 VOUT
2
F/B OCL-
16
P.GND
5
6
7
28
27
26
3
4, 26
OCL+
GND
18 21
23
VDD
VGH
8
25
5
R/C 25
VB
9
10
24
23
6 VCC 27 3.3V/5V
11
12
13
14
22
21
20
19
7, 10, 15, 17,
22, 24, 29, 31
8
N/C
Vboot
28 Vref
30 ampOUT
15
16
18
17
9 VGL 32 amp-
Specications
www.shindengen.co.jp/product/semi/
U095-6
31












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