BD2221G 데이터 시트보기 (PDF) - ROHM Semiconductor
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BD2221G Datasheet PDF : 13 Pages
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BD2220G, BD2221G
●Block Diagram
Technical Note
GND
OCD
UVLO
EN
VIN
Delay
Counter
Charge
pump
SQ
R
TSD
/OC
VOUT
VIN 1
5 VOUT
GND 2 Top View
EN(/EN) 3
4 /OC
Fig.37 Block diagram
●Pin Description
Pin No.
Symbol
I/O
Fig.38 Pin configuration
Function
1
VIN
-
Switch input and the supply voltage for the IC.
2
GND
3
EN, /EN
4
/OC
5
VOUT
-
Ground.
Enable input.
I
EN: High level input turns on the switch. (BD2220G)
/EN: Low level input turns on the switch. (BD2221G)
Over-current notification terminal.
O
Low level output during over-current or over-temperature condition.
Open-drain fault flag output.
O
Switch output.
●I/O Circuit
Symbol
Pin No.
Equivalent circuit
EN
(/EN)
3
EN
(/EN)
VOUT
5
/OC
4
VOUT
/OC
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© 2011 ROHM Co., Ltd. All rights reserved.
7/12
2011.05 - Rev.B
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