Datasheet
1 Channel Compact High Side Switch ICs
1ch Adjustable Current Limit
High Side Switch ICs
BD2244G-M BD2245G-M
General Description
BD2244G-M and BD2245G-M are low on-resistance
N-channel MOSFET high-side power switches,
optimized for Universal Serial Bus (USB) applications.
BD2244G-M and BD2245G-M are equipped with the
function of over-current detection, thermal shutdown,
under-voltage lockout and soft-start. Moreover, the range
of Current limit threshold can be adjusted from 0.2A to
1.7A by changing the external resistance
Key Specifications
Input Voltage Range:
2.8V to 5.5V
On Resistance: (IN=5V)
100mΩ(Typ)
Current Limit Threshold: 0.2A to 1.7A adjustable
Standby Current:
0.01μA (Typ)
Operating Temperature Range:
-40°C to +85°C
Features
AEC-Q100 Qualified
Adjustable Current Limit Threshold: 200mA to 1.7A
Built-in Low On-Resistance (Typ 100mΩ) N-channel
MOSFET Built-in
Soft-Start Circuit
Output Discharge Function
Open-Drain Fault Flag Output
Thermal Shutdown
Under-Voltage Lockout
Reverse Current Protection when Power Switch Off
Control Input Logic
Active-High:
BD2244G-M
Active-Low:
BD2245G-M
Package
W(Typ) x D(Typ) x H(Max)
SSOP6
2.90mm x 2.80mm x 1.25mm
Applications
Car accessory
Typical Application Circuit
5V (Typ)
3.3V
C
IN
10μF
10kΩ to
100kΩ
1μF
IN
GND
EN
OUT
ILIM
R
LIM
/OC
+
-
C
L
120μF
Figure 1. Typical Application Circuit
Lineup
Output Load
Current
Max
1.5A
1.5A
Adjustable
Current Limit
Threshold
200mA to 1.7A
200mA to 1.7A
Channel
1ch
1ch
Control input
logic
High
Low
SSOP6
SSOP6
Package
Reel of 3000
Reel of 3000
Orderable Part Number
BD2244G – MGTR
BD2245G – MGTR
〇Product
structure : Silicon monolithic integrated circuit
.
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© 2014 ROHM Co., Ltd. All rights reserved.
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〇This
product has no designed protection against radioactive rays
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BD2244G-M BD2245G-M
Block Diagram
IN
Reverse current
Protection
/EN
OUT
Under-voltage
Lockout
GND
Charge
Pump
EN
ILIM
Over-current
Protection
Delay
Counter
Thermal
Shutdown
/OC
Figure 2. Block Diagram
Pin Configuration
IN
1
6
OUT
GND
2
5
ILIM
EN
3
4
/OC
Figure 3. Pin Configuration (TOP VIEW)
Pin Descriptions
Pin No.
1
2
3
Symbol
IN
GND
EN
I/O
I
-
I
Function
Switch input and the supply voltage for the IC.
Ground.
Enable input.
High-level input turns on the switch (BD2244G-M)
Low-level input turns on the switch (BD2245G-M)
Over-current detection terminal.
Low level output during over-current or over-temperature condition.
Open-drain fault flag output.
Current limit threshold set Pin. External resistor used to set Current limit
threshold. Recommended 11.97 kΩ ≤ R
LIM
≤ 106.3 kΩ
Power switch output.
4
/OC
O
5
6
ILIM
OUT
O
O
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BD2244G-M BD2245G-M
Absolute Maximum Ratings
(Ta=25°C)
Parameter
IN Supply Voltage
EN Input Voltage
ILIM Voltage
ILIM Source Current
/OC Voltage
/OC Sink Current
OUT Voltage
Storage Temperature
Power Dissipation
Symbol
V
IN
V
EN
V
ILIM
I
ILIM
V
/OC
I
/OC
V
OUT
Tstg
Pd
Rating
-0.3 to +7.0
-0.3 to +7.0
-0.3 to +7.0
1
-0.3 to +7.0
10
-0.3 to +7.0
-55 to +150
0.67
(Note1)
Unit
V
V
V
mA
V
mA
V
°C
W
(Note 1) Mounted on 70mm x 70mm x 1.6mm glass epoxy board. Reduce 5.4mW per 1°C above 25°C
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. In addition, it is impossible to
predict all destructive situations such as short-circuit modes, open circuit modes, etc. Therefore, it is important to
consider circuit protection measures, like adding a fuse, in case the IC is operated in a special mode exceeding the
absolute maximum ratings.
Recommended Operating Conditions
Parameter
IN Operating Voltage
Operating Temperature
Symbol
V
IN
T
OPR
Rating
Min
2.8
-40
Typ
5.0
-
Max
5.5
+85
Unit
V
°C
Electrical Characteristics
(V
IN
= 5V, R
LIM
=20kΩ, Ta = 25°C, unless otherwise specified.)
DC Characteristics
Parameter
Operating Current
Standby Current
EN Input Voltage
EN Input Leakage
On-Resistance
Reverse Leak Current
Current Limit Threshold
Symbol
I
DD
I
STB
V
ENH
V
ENL
I
EN
R
ON
I
REV
I
TH
Limit
Min
-
-
2.0
-
-1
-
-
112
911
1566
Output Discharge Resistance
/OC Output Low Voltage
UVLO Threshold
AC Characteristics
Parameter
Output Rise Time
Output Turn-On Time
Output Fall Time
Output Turn-Off Time
/OC Delay Time
Symbol
t
ON1
t
ON
2
t
OFF1
t
OFF2
t
/OC
Limits
Min
-
-
-
-
4
Typ
0.6
1
1.8
3.2
7
Max
6
10
20
40
12
Unit
ms
ms
μs
μs
ms
R
L
= 100Ω
Conditions
R
DISC
V
/OC
V
TUVH
V
TUVL
30
-
2.35
2.30
Typ
120
0.01
-
-
0.01
100
-
212
1028
1696
60
-
2.55
2.50
Max
168
5
-
0.8
1
130
1
313
1145
1826
120
0.4
2.75
2.70
Ω
V
V
V
mA
Unit
μA
μA
V
V
μA
mΩ
μA
Conditions
V
EN
= 5V, V
OUT
= open, (BD2244G-M)
V
EN
= 0V, V
OUT
= open, (BD2245G-M)
V
EN
= 0V, V
OUT
= open, (BD2244G-M)
V
EN
= 5V, V
OUT
= open, (BD2245G-M)
High input
Low input
V
EN
= 0V or 5V
I
OUT
= 500mA
V
OUT
= 5V, V
IN
= 0V
R
LIM
= 100kΩ
R
LIM
= 20kΩ
R
LIM
= 12kΩ
I
OUT
= -1mA, V
EN
= 0V (BD2244G-M)
I
OUT
= -1mA, V
EN
= 5V (BD2245G-M)
I
/OC
= -1mA
V
IN
increasing
V
IN
decreasing
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BD2244G-M BD2245G-M
Measurement Circuit
V
IN
I
IN
A
C
IN
= IN
1µF
GND
V
EN
EN
OUT
ILIM
/OC
R
LIM
C
IN
= IN
1µF
GND
V
EN
EN
OUT
R
L
ILIM
R
LIM
/OC
V
IN
A. Operating Current, Standby Current
V
IN
10kΩ
B. EN Input Voltage, Output Rise/Fall Time
Output Turn-On/ Turn-Off Time
V
IN
I
/OC
=
1mA
I
OUT
C
IN
= IN
1µF
GND
V
EN
EN
OUT
ILIM
R
LIM
/OC
C
L
=
100µF
A
100µF
I
IN
C
IN
= IN
1µF
GND
V
EN
EN
I
OUT
OUT
ILIM
R
LIM
/OC
C
L
=
100µF
※
C. On-Resistance, Current Limit Threshold, /OC Delay Time
※Use
capacitance more than 100μF at output short circuit test by using
external power supply.
D. /OC Output Low Voltage
V
IN
V
IN
I
OUT
=
1mA
OUT
ILIM
R
LIM
/OC
C
IN
= IN
1µF
GND
V
EN
EN
OUT
R
L
ILIM
R
LIM
/OC
C
IN
= IN
1µF
GND
V
EN
EN
E. UVLO Threshold
F. Output Discharge Resistance
Figure 4. Measurement Circuit
Timing Diagram
V
EN
V
ENH
V
ENL
V
EN
V
ENL
V
ENH
t
ON2
90%
t
OFF2
90%
10%
t
ON2
90%
t
OFF2
90%
10%
V
OUT
10%
V
OUT
10%
t
ON1
t
OFF1
t
ON1
t
OFF1
Figure 5. Output Rise/Fall Time
(BD2244G-M)
Figure 6. Output Rise/Fall Time
(BD2245G-M)
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TSZ02201-0GGG0H300050-1-2
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BD2244G-M BD2245G-M
Typical Performance Curves
160
Ta=25°C
R
LIM
=20kΩ
Operationg Current : I
DD
[μA]
160
V
IN
=5.0V
R
LIM
=20kΩ
Operating C urrent : I
DD
[μA]
120
120
80
80
40
40
0
2
3
4
5
Supply Voltage : V
IN
[V]
6
0
-50
0
50
Ambient Temperature : Ta[°C]
100
Figure 7. Operating Current vs Supply Voltage
(EN Enable)
Figure 8. Operating Current vs Ambient Temperature
(EN Enable)
1.0
Ta=25°C
R
LIM
=20kΩ
1.0
V
IN
=5.0V
R
LIM
=20kΩ
0.8
Standby C urrent : I
S TB
[μA]
Standby C urrent : I
S TB
[μA]
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0.0
2
3
4
5
Supply Voltage : V
IN
[V]
6
0.0
-50
0
50
Ambient Temperature : Ta[°C]
100
Figure 9. Standby Current vs Supply Voltage
(EN Disable)
Figure 10. Standby Current vs Ambient Temperature
(EN Disable)
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