Standard LDO Regulators
Standard Fixed Output
LDO Regulators with Shutdown Switch
BD33C0AWFP, BD50C0AWFP
No.11022EBT01
●Description
The BDXXC0AWFP Series is low-saturation regulator.
This IC has a built-in over-current protection circuit that prevents the destruction of the IC due to output short circuits and a
thermal shutdown circuit that protects the IC from thermal damage due to overloading.
●Features
1) Output Current: 1A
2) Output Voltage: 3.3V／5.0V
2) High Output Voltage Precision :
±1%
3) Low saturation with PDMOS output
4) Built-in over-current protection circuit that prevents the destruction of the IC due to output short circuits
5) Built-in thermal shutdown circuit for protecting the IC from thermal damage due to overloading
6) Low ESR Capacitor
7) TO252-5 packaging
●Applications
Audiovisual equipments, FPDs, televisions, personal computers or any other consumer device
●Absolute
maximum ratings (Ta=25℃)
Parameter
Supply Voltage
Output Control Voltage
Power Dissipation (TO252-5)
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
*2
*1
Symbol
Vcc
V
CTL
Pd
Topr
Tstg
Tjmax
Ratings
-0.3 ~ +35.0
-0.3 ~ +35.0
1.3
-40 ~ +105
-55 ~ +150
+150
Unit
V
V
W
℃
℃
℃
*1 Not to exceed Pd.
*2 TO252-5:Reduced by 10.4mW /
℃
over Ta = 25℃, when mounted on glass epoxy board: 70mm×70mm×1.6mm.
NOTE : This product is not designed for protection against radioactive rays.
●Operating
conditions (Ta=25℃)
Parameter
Supply Voltage
Output Control Voltage
Output Current
Symbol
Vcc
V
CTL
Io
Min.
Vo+1V
0
0
Max.
26.5
26.5
1.0
Unit
V
V
A
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© 2011 ROHM Co., Ltd. All rights reserved.
1/12
2011.10 - Rev.B
BD33C0AWFP, BD50C0AWFP
●Electrical
characteristics
■BD33C0AWFP(Unless
otherwise specified, Ta=25℃, Vcc=8.3V,V
CTL
=5V,Io=0mA)
Parameter
Shut Down Current
Bias Current
Output Voltage
Dropout Voltage
Ripple Rejection
Line Regulation
Load Regulation
Temperature Coefficient of
Output Voltage
CTL ON Mode Voltage
CTL OFF Mode Voltage
CTL Bias Current
*1
ein : Input Voltage Ripple
Technical Note
Symbol
Isd
Ib
Vo
ΔVd
R.R.
Reg.I
Reg.L
Tcvo.1
Tcvo.2
VthH
VthL
ICTL
Min.
－
－
3.267
－
45
－
－
－
－
2.0
－
－
Typ.
0
0.5
3.300
0.4
55
20
Max.
10
1.0
3.333
0.7
－
60
Unit
µA
mA
V
V
dB
mV
V
%/℃
%/℃
V
V
µA
Io=200mA
V
CTL
=0V
Conditions
Vcc=Vo×0.95, Io=500mA
*1
f=120Hz,ein =1Vrms,
Io=100mA
Vo+1V→25V
Io=5mA→1A
Io=5mA,Tj=-40½-20℃
Io=5mA,Tj=-20½+105℃
ACTIVE MODE
OFF MODE
Vo×0.010 Vo×0.020
+0.04
±0.005
－
－
25
－
－
－
0.8
50
■BD50C0AWFP(Unless
otherwise specified, Ta=25℃, Vcc=10V,V
CTL
=5V,Io=0mA)
Parameter
Shut Down Current
Bias Current
Output Voltage
Dropout Voltage
Ripple Rejection
Line Regulation
Load Regulation
Temperature Coefficient of
Output Voltage
CTL ON Mode Voltage
CTL OFF Mode Voltage
CTL Bias Current
*1
ein : Input Voltage Ripple
Symbol
Isd
Ib
Vo
ΔVd
R.R.
Reg.I
Reg.L
Tcvo.1
Tcvo.2
VthH
VthL
ICTL
Min.
－
－
4.950
－
45
－
－
－
－
2.0
－
－
Typ.
0
0.5
5.000
0.3
55
20
Max.
10
1.0
5.050
0.5
－
60
Unit
µA
mA
V
V
dB
mV
V
%/℃
%/℃
V
V
µA
Io=200mA
V
CTL
=0V
Conditions
Vcc=Vo×0.95, Io=500mA
*1
f=120Hz,ein =1Vrms,
Io=100mA
Vo+1V→25V
Io=5mA→1A
Io=5mA,Tj=-40½-20℃
Io=5mA,Tj=-20½+105℃
ACTIVE MODE
OFF MODE
Vo×0.010 Vo×0.020
+0.04
±0.005
－
－
25
－
－
－
0.8
50
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© 2011 ROHM Co., Ltd. All rights reserved.
2/12
2011.10 - Rev.B
BD33C0AWFP, BD50C0AWFP
●Electrical
characteristic curves (Reference data)
■BD33C0AWFP(Unless
otherwise specified, Ta=25℃, Vcc=8.3V,V
CTL
=5V,Io=0mA)
1.0
CIRCUIT CURRENT
：
Ib+I
FEEDBACK
_R
STANBY CURRENT
：
Isd [µA]
18
15
12
9
6
3
0
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE
：
Vcc [V]
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE
：
Vcc [V]
6
5
4
3
2
1
0
Technical Note
0.8
0.6
[mA]
0.4
0.2
0.0
OUTPUT VOLTAGE : Vo [V]
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE
：
Vcc [V]
Fig.1 Circuit Current
Fig.2 Shut Down Current
Fig.3 Line Regulation
(Io=0mA)
800
DROPOUT VOLTAGE
：
Δ
Vd [mV]
700
600
500
400
300
200
100
0
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE
：
Vcc [V]
6
5
4
3
2
1
0
0
400
800
1200
1600
2000
OUTPUT CURRENT
：
IO[mA]
OUTPUT VOLTAGE
：
Vo [V]
OUTPUT VOLTAGE
：
Vo [V]
0
200
400
600
800
OUTPUT CURRENT
：
IO [mA]
1000
Fig.4 Line Regulation
(Io=500mA)
80
RIPPLE REJECTI ON
：
R.R.
[dB]
70
OUTPUT VOLTAGE
：
Vo [V]
5
4
3
2
1
0
-40
10
100
1000
10000
100000
1000000
Fig.5 Load Regulation
Fig.6 Dropout Voltage
(Vcc=Vo×0.95V)
(lo=0mA→1000mA)
CIRCUIT CURRENT
：
Ib+I
FEEDBACK
_R [mA]
1.0
6
60
50
40
30
20
10
0
FREQUENCY： f
[Hz]
0.8
0.6
0.4
0.2
-20
0
20
40
60
80
100
0.0
0
200
400
600
800
1000
OUTPUT CURRENT
：
Io [mA]
AMBIENT TEMPERATURE
：
Ta[
℃
]
Fig.7 Ripple Rejection
(lo=100mA)
100
90
CIRCUIT CURRENT
：
I
CTL
[µA]
OUTPUT VOLTAGE
：
Vo [V]
Fig.8 Output Voltage
Temperature Characteristics
6
5
4
3
2
1
0
6
OUTPUT VOLTAGE
：
Vo [V]
5
4
3
2
1
0
Fig.9 Circuit Current
(lo=0mA→1000 mA)
80
70
60
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18 20 22 24
CONTROL VOLTAGE
：
V
CTL
[V]
0 2 4 6 8 10 12 14 16 18 20 22 24
CONTROL VOLTAGE： V
CTL
[V]
130
140 150 160 170 180 190
AMBIENT TEMPERATURE： Ta [℃]
Fig.10 CTL Voltage vs CTL Current
Fig.11 CTL Voltage vs Output Voltage
Fig.12 Thermal Shutdown
Circuit Characteristics
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© 2011 ROHM Co., Ltd. All rights reserved.
3/12
2011.10 - Rev.B
BD33C0AWFP, BD50C0AWFP
●Electrical
characteristic curves (Reference data)
■BD50C0AWFP
(Unless otherwise specified, Ta=25℃, Vcc=10V,V
CTL
=5V,Io=0mA)
CIRCUIT CURRENT: Ib+I
FEEDBACK
_R [mA]
1.0
STANBY CURRENT
：
Isd [µA]
18
15
12
9
6
3
0
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE
：
Vcc [V]
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE
：
Vcc [V]
Technical Note
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE: Vcc [V]
0.8
0.6
0.4
0.2
0.0
Fig.13 Circuit Current
Fig.14 Shut Down Current
OUTPUT VOLTAGE : Vo [V]
Fig.15 Line Regulation
(Io=0mA)
600
DROPOUT VO LTAG E
： △Vd
[mV]
500
400
300
200
100
0
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE: Vcc [V]
6
5
4
3
2
1
0
0
400
800
1200
1600
OUTPUT CURRENT
：
IO[mA]
2000
OUTPUT VOLTAGE
：
Vo [V]
OUTPUT VOLTAGE : Vo [V]
0
200
400
600
800
OUTPUT CURRENT： IO [mA]
1000
Fig.16 Line Regulation
(Io=500mA)
80
RIPPLE REJECTI ON
：
R.R.
[dB]
70
Fig.17 Load Regulation
Fig.18 Dropout Voltage
(Vcc=Vo×0.95V)
(lo=0mA→1000mA)
1.0
CIRCUIT CURRENT： Ib+I
FEEDBACK
_R
[mA]
6
5
4
3
2
1
0
-40
10
100
1000
10000
100000
1000000
OUTPUT VOLTAGE
：
Vo [V]
60
50
40
30
20
10
0
FREQUENCY： f
[Hz]
0.8
0.6
0.4
0.2
0.0
-20
0
20
40
60
80
100
0
AMBIENT TEMPERATURE
：
Ta[
℃
]
200
400
600
800
OUTPUT CURRENT： Io [mA]
1000
Fig.19 Ripple Rejection
(lo=100mA)
100
CIRCUIT CURRENT: I CTL[µA]
90
80
70
60
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18 20 22 24
CONTROL VOLTAGE
：
VCTL[V]
0
OUTPUT VOLTAGE
：
Vo [V]
6
5
4
3
2
1
Fig.20 Output Voltage
Temperature Characteristics
6
5
4
3
2
1
0
130
Fig.21 Circuit Current
(lo=0mA→1000 mA)
OUTPUT VOLTAGE
：
Vo [V]
0 2 4 6 8 10 12 14 16 18 20 22 24
CONTROL VOLTAGE
：
VCTL[V]
140
150
160
170
180
190
AMBIENT TEMPERATURE
：
Ta [
℃
]
Fig.22 CTL Voltage vs CTL Current
Fig.23 CTL Voltage vs Output Voltage
Fig.24 Thermal Shutdown
Circuit Characteristics
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© 2011 ROHM Co., Ltd. All rights reserved.
4/12
2011.10 - Rev.B
BD33C0AWFP, BD50C0AWFP
●Measurement
circuit for reference data Measurement circuit for reference data
■BDXXC0AWFP
(
):Vo=5.0V
A
Technical Note
Vcc
Vo
Vcc
Vo
Vcc
Vo
(1.0μF)
2.2μF
1μF
CTL
N.C.
GND
(1.0μF)
2.2μF
1μF
CTL
N.C.
GND
(1.0μF)
2.2μF
1μF
CTL
GND
N.C.
V
5V
A
5V
Measurement Circuit of Fig.1 and Fig.13
Measurement Circuit of Fig.2 and Fig.14
Measurement Circuit of Fig.3 and Fig.15
V
Vcc
Vo
Vcc
Vo
Vcc
Vo
(1.0μF)
2.2μF
1μF
CTL
GND
N.C.
V
10V
500mA
(1.0μF)
2.2μF
1μF
CTL
GND
N.C.
A
(1.0μF)
2.2μF
4.75V
1μF
CTL
GND
N.C.
A
5V
5V
5V
Measurement Circuit of Fig.4 and Fig.16
Measurement Circuit of Fig.5 and Fig.17
Measurement Circuit of Fig.6 and Fig.18
Vcc
1Vrms
Vo
Vcc
Vo
Vcc
Vo
½
(1.0μF)
2.2μF
CTL
GND
N.C.
1μF
10V
100mA
(1.0μF)
2.2μF
CTL
GND
N.C.
1μF
(1.0μF)
2.2μF
V
10V
CTL
GND
N.C.
1μF
10V
5V
5V
5V
A
Measurement Circuit of Fig.7 and Fig.19
Measurement Circuit of Fig.8 and Fig.20
Measurement Circuit of Fig.9 and Fig.21
Vcc
Vo
Vcc
Vo
Vcc
Vo
(1.0μF)
2.2μF
A
10V
1μF
CTL
GND
N.C.
10V
(1.0μF)
2.2μF
1μF
CTL
GND
N.C.
V
10V
(1.0μF)
2.2μF
1μF
CTL
GND
N.C.
V
5V
Measurement Circuit of Fig.10 and Fig.22
Measurement Circuit of Fig.11 and Fig.23 Measurement Circuit of Fig.12 and Fig.24
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© 2011 ROHM Co., Ltd. All rights reserved.
5/12
2011.10 - Rev.B
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