ROHM BD2247G Technical data

A
1ch Small Package High Side Switch ICs for USB Devices and Memory Cards
BD2246G, BD2247G
Description
BD2246G and BD2247G are low on-resistance N-channel MOSFET high-side power switches, optimized for Universal Serial Bus (USB) applications. BD2246G and BD2247G are equipped with the function of over-current detection, thermal shutdown, under-voltage lockout and soft-start.
Features
1) Low On-Resistance (Typ. 110m) N-channel MOSFET Built-in
2) Reverse Current Protection when Power Switch Off
3) Output Discharge Function
4) Over-Current Detection
5) Thermal Shutdown
6) Open-Drain Fault Flag Output
7) Under-Voltage Lockout
8) Soft-Start Circuit
9) Input Voltage Range: 2.7V ~ 5.5V
10) Control Input Logic Active-High (BD2246G), Active-Low (BD2247G)
11) SSOP5 Package
Absolute Maximum Ratings (Ta=25℃)
Parameter Symbol Ratings Unit
VIN supply voltage VIN -0.3 ~ 6.0 V
No.11029EAT25
EN(/EN) input voltage VEN(/EN) -0.3 ~ 6.0 V
/OC voltage V/OC -0.3 ~ 6.0 V
/OC sink current I/OC 5 mA
VOUT voltage VOUT -0.3 ~ 6.0 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.
1/13
2011.05 - Rev.
BD2246G, BD2247G
A
Electrical Characteristics (VIN= 5V, Ta= 25, unless otherwise specified.)
BD2246G
DC Characteristics
Limits
Parameter Symbol
Unit Conditions
Min. Typ. Max.
Technical Note
Operating current IDD
- 110 160 μA
EN = 5V, VOUT = open, VIN = 5V
V
- 75 110 VEN = 3.3V, VOUT = open, VIN = 3.3V
Standby current ISTB - 0.01 5 μA VEN = 0V, VOUT = open, VIN = 5V
VENH 2.0 - - V High input, VIN = 3.3~5V
EN input voltage
VENL
- - 0.8 V Low input, V
IN = 5V
- - 0.6 Low input, VIN = 3.3V
EN input leakage IEN -1 0.01 1 μA VEN = 0V or 5V
On-resistance RON
- 110 155
m
OUT = 500mA, VIN = 5V
I
- 130 180 IOUT = 500mA, VIN = 3.3V
Reverse leak current IREV - - 1 μA VOUT = 5V, VIN = 0V
Over-current threshold ITH
630 765 900
mA
IN = 5V
V
600 740 890 VIN = 3.3V
Short circuit output current ISC 350 500 650 mA VOUT = 0V,RMS, VIN = 3.3~5V
Output discharge resistance RDISC
30 60 120
DISC = 1mA, VIN = 5V
I
50 100 200 IDISC = 1mA, VIN = 3.3V
/OC output low voltage V/OC - - 0.4 V I/OC = 0.5mA, VIN = 3.3~5V
UVLO threshold
V
VTUVL
2.1 2.3 2.5 V V
2.0 2.2 2.4 V VIN decreasing
IN increasing
TUVH
AC Characteristics
Limits
Parameter Symbol
Unit Conditions
Min. Typ. Max.
Output rise time TON1 - 1 6 ms RL = 20Ω, VIN = 3.3~5V
Output turn-on time TON2 - 1.5 10 ms RL = 20Ω, VIN = 3.3~5V
Output fall time TOFF1 - 1 20 μs RL = 20Ω, VIN = 3.3~5V
Output turn-off time TOFF2 - 3 40 μs RL = 20Ω, VIN = 3.3~5V
/OC delay time T/OC
10 15 20
ms
IN = 5V
V
11 16 21 VIN = 3.3V
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© 2011 ROHM Co., Ltd. All rights reserved.
2/13
2011.05 - Rev.
BD2246G, BD2247G
A
BD2247G
DC Characteristics
Parameter Symbol
Technical Note
Limits
Unit Conditions
Min. Typ. Max.
Operating current IDD
- 110 160 μA
/EN = 0V, VOUT = open, VIN = 5V
V
- 75 110 V/EN = 0V, VOUT = open, VIN = 3.3V
Standby current ISTB - 0.01 5 μA V/EN = 5V, VOUT = open, VIN = 5V
V/ENH 2.0 - - V High input, VIN = 3.3~5V
/EN input voltage
V/ENL
- - 0.8 V Low input, V
- - 0.6 Low input, VIN = 3.3V
IN = 5V
/EN input leakage I/EN -1 0.01 1 μA V/EN = 0V or 5V
On-resistance RON
- 110 155
m
I
OUT = 500mA, VIN = 5V
- 130 180 IOUT = 500mA, VIN = 3.3V
Reverse leak current IREV - - 1 μA VOUT = 5V, VIN = 0V
Over-current threshold ITH
630 765 900
mA
IN = 5V
V
600 740 890 VIN = 3.3V
Short circuit output current ISC 350 500 650 mA VOUT = 0V,RMS, VIN = 3.3~5V
Output discharge resistance RDISC
30 60 120
DISC = 1mA, VIN = 5V
I
50 100 200 IDISC = 1mA, VIN = 3.3V
/OC output low voltage V/OC - - 0.4 V I/OC = 0.5mA, VIN = 3.3~5V
UVLO threshold
TUVH
VTUVL
2.1 2.3 2.5 V V
IN increasing
2.0 2.2 2.4 V VIN decreasing
V
AC Characteristics
Limits
Parameter Symbol
Unit Conditions
Min. Typ. Max.
Output rise time TON1 - 1 6 ms RL = 20Ω, VIN = 3.3~5V
Output turn-on time TON2 - 1.5 10 ms RL = 20Ω, VIN = 3.3~5V
Output fall time TOFF1 - 1 20 μs RL = 20Ω, VIN = 3.3~5V
Output turn-off time TOFF2 - 3 40 μs RL = 20Ω, VIN = 3.3~5V
/OC delay time T/OC
10 15 20
ms
V
IN = 5V
11 16 21 VIN = 3.3V
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© 2011 ROHM Co., Ltd. All rights reserved.
3/13
2011.05 - Rev.
BD2246G, BD2247G
A
Measurement Circuit
VIN
A
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
I
OUT
10k
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%
OFF2
T
90%
V
OUT
TON1 TOFF1
Fig.2 Output rise/fall time
(BD2246G)
90%
10%10%
V
OUT
90%
TON1 TOFF1
Fig.3 Output rise/fall time
(BD2247G)
90%
10% 10%
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© 2011 ROHM Co., Ltd. All rights reserved.
4/13
2011.05 - Rev.
BD2246G, BD2247G
A
Reference Data
140
Ta= 2 5° C
120
[μA]
DD
100
80
60
40
20
OPERATING CURRENT : I
0
2 3456
SUPPLY VOLTAGE : V
Fig.4 Operating current
EN,/EN enable
1.0
VIN=5.0V
0.8
[μA]
STB
0.6
0.4
0.2
STANDBY CURRENT : I
0.0
-50 0 50 100
AMBIENT TEMPERATURE : T a[℃]
Fig.7 Standby current
EN,/EN disable
200
Ta= 2 5° C
]
Ω
150
[m
ON
100
50
ON RESISTANCE : R
0
2 3456
SUPPLY VOLTAGE : V
Fig.10 On-resistance Fig.11 On-resistance
1.0
VIN=5.0V
[A]
TH
0.9
0.8
0.7
0.6
0.5
OVERCURRENT THRESHOLD : I
0.4
-5 0 0 50 1 00
AMB IENT TEMP ERA TURE : Ta [℃]
Fig.13 Over-current threshold Fig.14 /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
AMBI ENT TEM PE R ATU R E : Ta[℃]
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 VOLTAGE : V
0.0
23456
High to Low
SU PPLY VOLT AGE : V
[V]
IN
Fig.8 EN,/EN input voltage
200
VIN=5.0V
]
Ω
150
[m
ON
100
50
ON RESISTANCE : R
0
-50 0 50 100
[V]
IN
[mV]
/OC OUTPUT LOW VOLTAGE:V
AMBI EN T T EMPE R ATU RE : Ta[℃]
100
Ta= 2 5° C
/O C
80
60
40
20
0
23456
SUPPLY VOLTAGE : V
[V]
IN
1.0
0.8
[μA]
STB
0.6
0.4
0.2
STANDBY CURRENT : I
0.0
23 456
SUPPLY VOLTAGE : 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 VOLTAGE : V
0.0
-50 0 50 100
AMBIENT TEMPERATURE : T a[℃]
Low to High
High to Low
Fig.9 EN,/EN input voltage
1.0
Ta= 2 5° C
[A]
TH
0.9
0.8
0.7
0.6
0.5
OVERCURRENT THRESHOLD : I
0.4
2 3456
SUPPLY VOLTAGE : V
[V]
IN
Fig.12 Over-current threshold
10 0
VIN=5.0V
[mV]
/O C
80
60
40
20
/OC OUTPUT LOW VOLTAGE:V
0
-50 0 50 100 AMBIENT TEMPERATURE : Ta[℃]
Fig.15 /OC output low voltage
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© 2011 ROHM Co., Ltd. All rights reserved.
5/13
2011.05 - Rev.
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