ROHM BD2227G Technical data
Power Management Switch ICs for PCs and Digital Consumer Products
1ch Small Package
High Side Switch ICs
for USB Devices and Memory Cards
BD2226G, BD2227G
●Description
BD2226G and BD2227G are low on-resistance N-channel MOSFET high-side power switches, optimized for Universal
Serial Bus (USB) applications. BD2226G and BD2227G are equipped with the function of over-current detection, thermal
shutdown, under-voltage lockout and soft-start.
●Features
1) Low On-Resistance (Typ. 150mΩ) N-channel MOSFET Built-in
2) Over-Current Detection
3) Thermal Shutdown
4) Open-Drain Fault Flag Output
5) Under-Voltage Lockout
6) Soft-Start Circuit
7) Input Voltage Range: 2.7V ~ 5.5V
8) Control Input Logic Active-High (BD2226G), Active-Low (BD2227G)
9) SSOP5 Package
●Absolute Maximum Ratings (Ta=25℃)
Parameter Symbol Ratings Unit
VIN supply voltage VIN -0.3 ~ 6.0 V
EN(/EN) input voltage VEN(/EN) -0.3 ~ 6.0 V
No.11029EBT18
/OC voltage V/OC -0.3 ~ 6.0 V
/OC sink current I/OC 5 mA
VOUT voltage VOUT -0.3 ~ VIN + 0.3 V
Storage temperature TSTG -55 ~ 150 ℃
Power dissipation Pd 675 *1 mW
*1 Mounted on 70mm x 70mm x 1.6mm glass epoxy board. Reduce 5.4mW per 1℃ above 25℃
* This IC is not designed to be radiation-proof.
●Operating Conditions
Parameter Symbol
VIN operating voltage VIN 2.7 5.0 5.5 V
Operating temperature TOPR -40 - 85 ℃
Min. Typ. Max.
Ratings
Unit
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© 2011 ROHM Co., Ltd. All rights reserved.
1/12
2011.05 - Rev.B
BD2226G, BD2227G
●Electrical Characteristics (VIN= 5V, Ta= 25℃, unless otherwise specified.)
DC Characteristics
Technical Note
Parameter Symbol
Unit Conditions
Min. Typ. Max.
Limits
EN= 5V (BD2226G)
V
Operating current IDD - 110 160 μA
Standby current ISTB - 0.01 5 μA
V
/EN= 0V (BD2227G)
OUT= open
V
EN= 0V (BD2226G)
V
V
/EN= 5V (BD2227G)
OUT= open
V
VEN(/EN) 2.0 - - V High input
EN(/EN) input voltage
VEN(/EN) - - 0.8 V Low input
EN(/EN) input leakage IEN(/EN) -1 0.01 1 μA VEN(/EN)= 0V or 5V
On-resistance RON - 150 200 mΩ IOUT= 250mA
Over-current threshold ITH 750 1000 1350 mA
Short circuit output current ISC 500 - - mA VOUT= 0V, RMS
/OC output low voltage V/OC - - 0.4 V I/OC= 0.5mA
UVLO threshold VTUV
2.1 2.3 2.5 V VIN increasing
2.0 2.2 2.4 V VIN decreasing
AC Characteristics
Limits
Parameter Symbol
Unit Conditions
Min. Typ. Max.
Output rise time TON1 0.2 1 6 ms RL= 20Ω
Output turn-on time TON2 0.3 1.5 10 ms RL= 20Ω
Output fall time TOFF1 0.1 1 20 μs RL= 20Ω
Output turn-off time TOFF2 0.3 3 40 μs RL= 20Ω
/OC delay time T/OC 10 15 20 ms
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© 2011 ROHM Co., Ltd. All rights reserved.
2/12
2011.05 - Rev.B
BD2226G, BD2227G
●Measurement Circuit
A
VIN
Technical Note
IN
V
A
EN(/EN)
V
VIN
1µF
GND
EN(/EN)
VOUT
/OC
VIN
1µF RL
GND
EN(/EN)
V
EN(/EN)
VOUT
/OC
Operating current EN,/EN Input voltage, Output rise/fall time
EN(/EN)
V
1µF
A
VIN
VIN
GND
EN(/EN)
VOUT
/OC
OUT
I
10kΩ
EN(/EN)
V
1µF
A
IN
V
VIN
GND
EN(/EN)
VOUT
/OC
OC
I
On-resistance, Over-current detection /OC Output low voltage
Fig.1 Measurement circuit
●Timing Diagram
VEN
50%
TON2
50%
OFF2
T
V/EN
50%
TON2
50%
T
OFF2
90%
V
OUT
TON1 TOFF1
Fig.2 Output rise/fall time
(BD2226G)
90%
10%10%
V
90%
OUT
TON1 TOFF1
Fig.3 Output rise/fall time
(BD2227G)
90%
10% 10%
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© 2011 ROHM Co., Ltd. All rights reserved.
3/12
2011.05 - Rev.B
BD2226G, BD2227G
●Reference Data
140
Ta= 2 5° C
120
[μA]
DD
100
80
60
40
20
OPERATING CURRENT : I
0
23 456
SUPPLY VOLT AGE : V
Fig.4 Operating current
EN,/EN enable
1.0
VIN=5.0V
0.8
[μA]
DD
0.6
0.4
0.2
STANDBY CURRENT : I
0.0
-50 0 50 100
AMBIEN T T EMPER ATU RE : Ta[℃]
Fig.7 Standby current
EN,/EN disable
200
Ta= 2 5° C
150
[mΩ]
ON
100
50
ON RESISTANCE : R
0
23 456
SUPPLY VOLT AGE : V
Fig.10 On-resistance Fig.11 On-resistance
1.3
VIN=5.0V
[A]
TH
1.2
1.1
1.0
0.9
0.8
OVERCURRENT THRESHOLD : I
0.7
-50 0 50 100
AMBIEN T TEMPER ATUR E : Ta[
Fig.13 Over-current threshold Fig.14 /OC output low voltage Fig.15 /OC output low voltage
Technical Note
140
VIN=5.0V Ta=25°C
120
[μA]
DD
100
80
60
40
20
OPERATING CURRENT : I
0
-50 0 50 100
[V]
IN
AMBIENT TEM PERATU RE : T a[℃]
Fig.5 Operating current
EN,/EN enable
2.0
Ta= 2 5° C
[V]
EN
1.5
Low to High
1.0
0.5
ENABLE INPUT CURRENT : V
0.0
23456
High to Low
SUPPLY VOLT AGE : V
[V]
IN
Fig.8 EN,/EN input voltage
200
VIN=5.0V
150
[mΩ]
ON
100
50
ON RESISTANCE : R
0
-50 0 50 100
[V]
IN
]
℃
AMBIENT TEM PERATU RE : Ta[
100
Ta= 2 5° C
80
60
[mV]
/OC
V
40
20
/OC OUTPUT LOW VOLTAGE :
0
23456
SUPPLY VOLT AGE : V
]
℃
[V]
IN
1.0
0.8
[μA]
STB
0.6
0.4
0.2
STANDBY CURRENT : I
0.0
23456
SUPPLY VOLT AGE : V
[V]
IN
Fig.6 Standby current
EN,/EN disable
2.0
VIN=5.0V
[V]
EN
1.5
1.0
0.5
ENABLE INPUT CURRENT : V
0.0
-50 0 50 100
AMBIEN T TEMPERAT URE : Ta[℃]
Low to High
High to Low
Fig.9 EN,/EN input voltage
1.3
Ta= 2 5° C
[A]
TH
1.2
1.1
1.0
0.9
0.8
OVERCURRENT THRESHOLD : I
0.7
23 456
SUPPLY VOLTAGE : V
[V]
IN
Fig.12 Over-current threshold
100
VIN=5.0V
80
60
[mV]
/OC
V
40
20
/OC OUTPUT LOW VOLTAGE :
0
-50 0 50 100
AMBIEN T T EMPER ATU RE : T a[
℃
]
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© 2011 ROHM Co., Ltd. All rights reserved.
4/12
2011.05 - Rev.B
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