BD3004HFP 데이터 시트보기 (PDF) - ROHM Semiconductor
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BD3004HFP Datasheet PDF : 9 Pages
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zBlock diagram
Vcc
3
Cin
Pre Reg
Reverse Polarity Protection
Vref
OUT
Vs
（BD3004HFP）
2
INH
（BD3005HFP）
2
TSD
OCP
OUT
OUT
OUT
5
Co
HRP7
FIN
Signal from
CLK
microcontroller
1
GND
4
FIN
zPin descriptions
Pin. No
Pin name
1
CLK
Vs(BD3004HFP)
2
INH(BD3005HFP)
3
Vcc
4
GND
5
OUT
6
RESET
7
CT
FIN
GND
WDT
6 RESET
12 3 45 67
CT
7
CT
Cin: 0.33 µF to 1000 µF
Co: 0.1 µF to 1000 µF
CT: 0.001 µF to 22 µF
Fig.13
Function
Clock input from microcontroller
Reset detection voltage adjustment function pin
WDT on/off function pin (WDT off when INH = high; WDT on when INH = low)
Power supply pin
GND pin
Voltage output pin
Reset output pin
Reset output delay time, WDT monitor time setting external capacitance connection pin
GND pin
zI/O Circuit diagram
CLK (1 pin)
Vcc
PREREG
Vs(2 pin)
Vcc
PREREG
INH (2 pin)
Vcc
PREREG
CLK
100KΩ
3.56MΩ
Vs
100KΩ
1.56MΩ
INH
100KΩ
OUT (5 pin)
Vcc
OUT
Rb
Ra
RESET
RESET (6 pin)
OUT
OUT
470KΩ
CT (7 pin)
OUT
OUT
CT
Fig.14
4/8
* All resistance values are typical ones.
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