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PDF BD2045AFJ Data sheet ( Hoja de datos )
| Número de pieza | BD2045AFJ | |
| Descripción | 0.5A Current Limit High Side Switch ICs | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
1ch High Side Switch ICs
0.5A Current Limit High Side Switch ICs
BD2045AFJ BD2055AFJ
General Description
BD2045AFJ and BD2055AFJ 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:
0.25A
Over-Current Threshold: 0.3A (Min), 0.8A (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:
BD2045AFJ
Active-High:
BD2055AFJ
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
Applications
USB Hub in Consumer Appliances, PC, PC Peripheral
Equipment, and so forth
Package
W(Typ) D(Typ) H (Max)
SOP-J8
4.90mm x 6.00mm x 1.65mm
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
0.3A
0.5A
0.8A
0.3A
0.5A
0.8A
Control Input
Logic
Low
High
Package
Orderable Part Number
SOP-J8
SOP-J8
Reel of 2500 BD2045AFJ-E2
Reel of 2500 BD2055AFJ-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
1/22
TSZ02201-0E3E0H300130-1-2
21.Aug.2014 Rev.002
1 page  
BD2045AFJ BD2055AFJ
Electrical Characteristics - continued
BD2055AFJ (Unless otherwise specified, VIN = 5.0V, Ta = 25°C)
Parameter
Limit
Symbol
Min Typ
Operating Current
IDD - 90
Standby Current
ISTB - 0.01
V ENH
2.0
-
EN Input Voltage
V ENL
-
-
-
-
EN Input Current
IEN -1.0 +0.01
/OC Output Low Voltage
V /OC
-
-
/OC Output Leak Current
I L/OC
- 0.01
/OC Delay Time
t/OC - 2.5
ON-Resistance
R ON
- 80
Over-Current Threshold
ITH 0.3 0.5
Output Current at Short
ISC 0.3 0.5
Output Rise Time
Output Turn ON Time
Output Fall Time
Output Turn OFF Time
UVLO Threshold
t ON1
- 1.2
t ON2
- 1.5
tOFF1 - 1
tOFF2 - 3
VTUVH 2.1 2.3
VTUVL 2.0 2.2
Max
120
1
-
0.8
0.4
+1.0
0.5
1
8
100
0.8
0.7
10
20
20
40
2.5
2.4
Unit Conditions
μA VEN = 5V, OUT = OPEN
μA VEN = 0V, OUT = OPEN
V High Input
V Low Input
V Low Input 2.7V≤ VIN ≤4.5V
μA VEN = 0V or VEN = 5V
V I/OC = 5mA
μA V/OC = 5V
ms
mΩ IOUT = 250mA
A
A
VIN = 5V, VOUT = 0V,
CL = 100μF (RMS)
ms
ms
μs RL = 20Ω , CL = OPEN
μs
V Increasing VIN
V Decreasing VIN
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
4/22
TSZ02201-0E3E0H300130-1-2
21.Aug.2014 Rev.002
5 Page 
BD2045AFJ BD2055AFJ
Typical Performance Curves - continued
5.0
Ta=25°C
4.0
3.0
2.0
1.0
0.0
2
34 5
Supply Voltage : VIN[V]
Figure 20. Output Turn ON Time
vs Supply Voltage
6
5.0
Ta=25°C
4.0
3.0
2.0
1.0
0.0
2
3 45
Supply Voltage : VIN[V]
Figure 22. Output Fall Time
vs Supply Voltage
6
5.0
VIN=5.0V
4.0
3.0
2.0
1.0
0.0
-50 0 50 100
Ambient Temperature : Ta[°C]
Figure 21. Output Turn ON Time
vs Ambient Temperature
5.0
VIN=5.0V
4.0
3.0
2.0
1.0
0.0
-50 0 50
Ambient Temperature : Ta[°C]
100
Figure 23. Output Fall Time
vs Ambient Temperature
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
10/22
TSZ02201-0E3E0H300130-1-2
21.Aug.2014 Rev.002
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet BD2045AFJ.PDF ] | |
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