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Side Switch. BD2051AFJ Datasheet |
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Datasheet
1ch High Side Switch ICs
1.0A Current Limit High Side Switch ICs
BD2041AFJ BD2051AFJ
General Description
BD2041AFJ and BD2051AFJ are single channel high
side switch ICs with over-current protection for
Universal Serial Bus (USB) power supply line. These
ICs have low ON-Resistance N-Channel power
MOSFETs with low supply current, built-in over-current
protection circuit, thermal shutdown circuit, under
voltage lockout and soft-start circuit.
Key Specifications
Input Voltage Range:
2.7V to 5.5V
ON-Resistance:
80mΩ(Typ)
Continuous Current Load:
0.5A
Over-Current Threshold: 0.7A (Min), 1.6A (Max)
Standby Current:
0.01μA (Typ)
Output Rise Time:
1.2ms(Typ)
Operating Temperature Range: -40°C to +85°C
Features
Built-In Low ON-Resistance Nch MOSFET
( Typ=80mΩ )
Control Input Logic
Active-Low:
BD2041AFJ
Active-High:
BD2051AFJ
Soft-Start Circuit
Over-Current Protection
Thermal Shutdown
Under Voltage Lockout Function
Open Drain Error Flag Output
Reverse-Current Protection when Switch Off
Flag Output Delay
Package
W(Typ) D(Typ) H (Max)
SOP-J8
4.90mm x 6.00mm x 1.65mm
Applications
USB Hub in Consumer Appliances, PC, PC Peripheral
Equipment, and so forth
Typical Application Circuit
5V(Typ)
GND
OUT
IN OUT
C IN
IN OUT
EN( /EN ) /OC
+
CL -
VBUS
D+
D-
GND
Lineup
Over-Current Threshold
Min Typ Max
0.7A
1.0A
1.6A
0.7A
1.0A
1.6A
Control Input
Logic
Low
High
Package
Orderable Part Number
SOP-J8
SOP-J8
Reel of 2500 BD2041AFJ-E2
Reel of 2500 BD2051AFJ-E2
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001
○This product has not designed protection against radioactive rays
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TSZ02201-0E3E0H300290-1-2
21.Aug.2014 Rev.002
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BD2041AFJ BD2051AFJ
Block Diagram
GND
IN
IN
EN(/EN)
UVLO
Charge
pump
OCD
Gate logic
TSD
OUT
OUT
OUT
/OC
Pin Configurations
BD2041AFJ
TOP VIEW
1 GND
2 IN
3 IN
4 /EN
OUT 8
OUT 7
OUT 6
/OC 5
BD2051AFJ
TOP VIEW
1 GND
2 IN
3 IN
4 EN
OUT 8
OUT 7
OUT 6
/OC 5
Pin Description
Pin No.
1
Symbol
GND
I/O
I Ground.
Pin Function
2, 3 IN
Power supply input.
I Input terminal to the power switch and power supply input terminal of the internal circuit.
When used, connect each pin outside.
Enable input.
4
EN, /EN
I
/EN: Power switch on at low level. (BD2041AFJ)
EN: Power switch on at high level. (BD2051AFJ)
High level input > 2.0V, low level input < 0.8V.
Error flag output.
5 /OC O Low at over current, thermal shutdown.
Open drain output.
6, 7, 8
OUT
O
Power switch output.
When used, connect each pin outside.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
2/22
TSZ02201-0E3E0H300290-1-2
21.Aug.2014 Rev.002
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