Power Management Switch IC Series for PCs and Digital Consumer Product
1ch Small Current Output
Power Management Switch IC
BD6538G
No.09029EAT14
●Outline
BD6538G is single channel high side powers switch with low ON resistance Nch power MOSFET.
Rich safety functions such as Over current detection, Thermal shutdown (TSD), Under Voltage Lock Out(UVLO) and
Soft start function which are required for the power supply port protection are integrated into 1chip.
●Feature
1) Single channel of low ON resistance (Typ = 150mΩ) Nch power MOSFET built in
2) 500mA Continuous current load
3) Active”High”Control Logic
4) Soft start function
5) Over current detection（Output Off-latch Operating）
6) Thermal shutdown
7) Open drain error flag output
8) Under voltage lockout
9) Power supply voltage range 2.7V~5.5V
10) Operating temperature range-40°C~85°C
11) SSOP5 Package
●Absolute
maximum ratings
Parameter
Supply voltage
Enable voltage
/OC voltage
/OC current
OUT voltage
Storage temperature
Power dissipation
*1
*
Symbol
V
IN
V
EN
V
/OC
I
/OC
V
OUT
T
STG
PD
Rating
to 6.0
to 6.0
to 6.0
5
-0.3 to V
IN
+ 0.3
-55 to 150
675
*1
-0.3
-0.3
-0.3
Unit
V
V
V
mA
V
°C
mW
1 Mounted on 70mm * 70mm * 1.6mm grass-epoxy PCB. Derating : 5.4mW / °C for operating above Ta=25°C.
This product is not designed for protection against radioactive rays.
●Operating
conditions
Parameter
Operating voltage
Operating temperature
Continuous output current
Symbol
V
IN
T
OPR
I
OUT
Min
2.7
-40
0
Typ
-
-
-
Max
5.5
85
0.5
Unit
V
°C
A
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1/11
2009.05 - Rev.A
BD6538G
●Electric
characteristics
Unless otherwise specified V
IN
= 5.0V, Ta = 25°C
DC characteristics
Parameter
Operating Current
Standby Current
EN input voltage
EN input current
ON resistance
Over current threshold
Output current at short
/OC output lOW voltage
UVLO Threshold
AC characteristics
Parameter
Output rise time
Output rise delay time
Output fall time
Output fall delay time
Blanking time
Symbol
T
ON1
T
ON2
T
OFF1
T
OFF2
T
BLANK
Min.
-
-
-
-
10
Typ.
1
1.5
1
3
15
Max.
6
10
20
40
20
unit
ms
ms
μs
μs
ms
Symbol
I
DD
I
STB
V
EN
V
EN
I
EN
R
ON
I
TH
I
SC
V
/OC
V
TUVH
V
TUVL
Min.
-
-
2.0
-
-1.0
-
0.5
0.35
-
2.1
2.0
Typ.
110
0.01
-
-
0.01
150
-
-
-
2.3
2.2
Max.
160
5
-
0.8
1.0
200
1.0
-
0.4
2.5
2.4
unit
μA
μA
V
V
μA
mΩ
A
A
V
V
V
Technical Note
Condition
V
EN
= 5.0V, V
OUT
= Open
V
EN
= 0V, V
OUT
= Open
High input
Low input
V
EN
=0Vor5V
I
OUT
= 50mA
-
V
OUT
= 0V (RMS)
I
/OC
= 0.5mA
Increasing V
IN
Decreasing V
IN
Condition
R
L
= 20Ω, Fig. 2 Ref.
R
L
= 20Ω, Fig. 2 Ref.
R
L
= 20Ω, Fig. 2 Ref.
R
L
= 20Ω, Fig. 2 Ref.
-
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2/11
2009.05 - Rev.A
BD6538G
●Measurement
circuit
V
IN
V
IN
Technical Note
A
VIN
1µF
GND
V
EN
EN
/OC
V
EN
VOUT
A
VIN
1µF
GND
EN
/OC
VOUT
R
L
Operating current
EN input voltage, Output rise, fall time
V
IN
V
IN
10k
A
VIN
1µF
GND
V
EN
EN
/OC
VOUT
I
OUT
A
I
OC
VIN
1µF
GND
V
EN
EN
/OC
VOUT
ON resistance, Over current
Fig.1 Measurement circuit
/OC output LOW voltage
●Timing
diagram
V
EN
50%
T
ON2
90%
50%
T
OFF2
90%
10%
T
OFF1
V
OUT
10%
T
ON1
Fig.2
Timing chart at output rise / fall time
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3/11
2009.05 - Rev.A
BD6538G
●Reference
data
140
OPERATING CURRENT :
I
DD
[μA]
120
100
80
60
40
20
0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
Ta=25°C
Technical Note
140
120
OPERATING CURRENT :
I
DD
[μA]
100
80
60
40
20
0
-50
V
IN
=5.0V
1.0
Ta=25°C
OPERATING CURRENT :
I
STB
[µA]
0.8
0.6
0.4
0.2
0.0
0
50
100
AMBIENT TEMPERATURE : Ta[
℃
]
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
Fig.3 Operating current
EN Enable
Fig.4 Operating current
EN Enable
Fig.5 Operating current
EN Disable
1.0
V
IN
=5.0V
2.0
Ta=25°C
2.0
V
IN
=5.0V
ENABLE INPUT VOLTAGE :
V
EN
[V]
Low to High
High to Low
1.5
OPERATING CURRENT :
I
STB
[μA]
0.8
0.6
0.4
0.2
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
ENABLE INPUT VOLTAGE :
V
EN
[V]
0
1.5
Low to High
High to Low
1.0
1.0
0.5
0.5
0.0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
Fig.6 Operating current
EN Disable
200
Ta=25°C
Fig.7 EN input voltage
Fig.8 EN input voltage
200
V
IN
=5.0V
Overcurrent threshold : I
TH
[A]
1.0
Ta=25°C
0.9
ON RESISTANCE :
R
ON[
mΩ]
ON RESISTANCE :
R
ON
[mΩ]
150
150
0.8
100
100
0.7
50
50
0.6
0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
0.5
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
Fig.9 ON resistance
Fig.10 ON resistance
Fig.11 Over current detection
1.0
100
/OC OUTPUT LOW VOLTAGE :
V
/OC
[mV]
80
60
40
20
0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
/OC OUTPUT LOW VOLTAGE :
V
/OC
[mV]
V
IN
=5.0V
Ta=25°C
100
V
IN
=5.0V
Overcurrent threshold : ITH[A]
0.9
80
60
40
20
0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
0.8
0.7
0.6
0.5
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
Fig.12 Over current detection
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Fig.13 /OC output LOW voltage
Fig.14 /OC output LOW voltage
4/11
2009.05 - Rev.A
BD6538G
Technical Note
2.5
UVLO THRESHOLD : V
TUVH
, V
TUVL
[V]
1.0
UVLO HYSTERESIS VOLTAGE : V
HYS
[V]
5.0
Ta=25°C
2.4
0.8
4.0
2.3
V
TUVH
0.6
RISE TIME : T
ON1
[ms]
3.0
2.2
V
TUVL
0.4
2.0
2.1
0.2
1.0
2.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
0.0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
Fig.15 UVLO Threshold
Fig.16 UVLO hysteresis voltage
Fig.17 Output rise time
5.0
5.0
5.0
V
IN
=5.0V
TURN ON TIME : T
ON2
[ms]
Ta=25°C
TURN ON TIME : T
ON2
[ms]
V
IN
=5.0V
4.0
4.0
RISE TIME : T
ON1
[ms]
4.0
3.0
3.0
3.0
2.0
2.0
2.0
1.0
1.0
1.0
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
0.0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
Fig.18 Output rise time
Fig.19 Output turn on time
Fig.20 Output turn on time
5.0
Ta=25°C
5.0
6.0
V
IN
=5.0V
TURN OFF TIME : T
OFF2
[μs]
Ta=25°C
5.0
4.0
3.0
2.0
1.0
0.0
4.0
FALL TIME : T
OFF1
[μs]
3.0
2.0
1.0
0.0
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
FALL TIME : T
OFF1
[μs]
4.0
3.0
2.0
1.0
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
Fig.21 Output fall time
Fig.22 Output fall time
Fig.23 Output turn off time
6.0
20
20
V
IN
=5.0V
BLANKING TIME : T
BLANK
[ms]
TURN OFF TIME : T
OFF2
[μs]
5.0
4.0
3.0
2.0
1.0
0.0
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
Ta=25°C
BLANK TIME : T
BLANK
[ms]
18
V
IN
=5.0V
18
16
16
14
14
12
12
10
2
3
4
5
SUPPLY VOLTAGE : V
IN
[V]
6
10
-50
0
50
100
AMBIENT TEMPERATURE : Ta[℃]
Fig.24 Output turn off time
Fig.25 Blanking time
Fig.26 Blanking time
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5/11
2009.05 - Rev.A
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