ROHM BD3571FP Technical data
Power Management IC Series for Automotive Body Control
High Voltage
LDO Regulators
BD3570FP, BD3570HFP, BD3571FP, BD3571HFP, BD3572FP, BD3572HFP
BD3573FP, BD3573HFP, BD3574FP, BD3574HFP, BD3575FP, BD3575HFP
●Description
BD357XFP/HFP SERIES regulators feature a high 50 V withstand-voltage and are suitable for use with onboard vehicle
microcontrollers. They offer the output current of 500 mA while limiting the quiescent current to 30μA (TYP).With these
devices, a ceramic capacitor can be selected at the output for stable operation, the output tolerance is within ±2% over the
wide ambient temperature range (-40 to 125℃), and the short circuit protection is folded-type to minimize generation of
heat during malfunction. These devices are developed to offer most robust power-supply design under the harsh
automotive environment. The BD357XFP/HFP Series provide ideal solutions to lower the current consumption as well as to
simplify the use with battery direct-coupled systems.
●Features
1) Ultra-low quiescent current: 30μA (T YP.)
2) Low-saturation voltage type P-channel DMOS output transistors
3) High output voltage precision: 2%／Iomax = 500 mA
4) Low-ESR ceramic capacitors can be used as output capacitors.
5) Vcc power supply voltage = 50 V
6) Built-in overcurrent protection circuit and thermal shutdown circuit
7) TO252-3, TO252-5, HRP5 Package
●Applications
Onboard vehicle devices (body-control, car stereos, satellite navigation systems, etc.)
●Line up matrix
BD3570FP/HFP BD3571FP/HFP BD3572FP/HFP BD3573FP/HFP BD3574FP/HFP BD3575FP/HFP
Output voltage 3.3V 5.0 V Variable 3.3V 5.0 V Variable
SW function － － － 〇 〇 〇
Package FP:TO252-3,TO252-5
HFP:HRP5
●Absolute maximum ratings (Ta=25℃)
Parameter Symbol Limit Unit
Supply voltage VCC 50 ※1V
Switch Supply voltage VSW 50 ※2V
Output current IO 500 mA
1.2 (TO252-3) ※3
Power dissipation Pd
1.6 (HRP5) ※5
Operating temperature range Topr -40 to +125 ℃
Storage temperature range Tstg -55 to +150 ℃
Maximum junction
temperature
※1 Not to exceed Pd and ASO.
※2 for ON/OFF SW Regulator only
※3 TO252-3: Reduced by 9.6 mW/℃ over 25 ℃, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
※4 TO252-5: Reduced by 10.4 mW/℃ over 25 ℃, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
※5 HRP5: Reduced by 12.8 mW/℃ over 25 ℃, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
T
jmax 150 ℃
W 1.3 (TO252-5) ※4
No.11036EBT02
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.03 - Rev.B
BD3570FP/HFP, BD3571FP/HFP, BD3572FP/HFP, BD3573FP/HFP
BD3574FP/HFP, BD3575FP/HFP
Technical Note
●Operating Conditions
Parameter Symbol Min. Max. Unit
Input voltage
BD3570,3572,3573,3575FP/HFP V
BD3571,3574FP/HFP VCC 5.5 ※6 36.0 V
CC 4.5 ※6 36.0 V
Output current IO － 500 mA
Variable Output Voltage Range VO 2.8 12 V
※6 Please consider that the Output voltage would be dropped (Dropout voltage) according to the output current.
●Electrical Characteristics（Unless otherwise specified, Ta=-40 to125℃, VCC=13.2 V, SW=3V ※7, VO settings is 5V ※8）
Parameter Symbol
Min. Typ. Max.
Limit
Unit Conditions
Shut Down Current ※７ lshut － － 10 μA SW=GND
Bias current lb － 30 50 μAIO=0mA
Output voltage VO
V
O×
0.98
V
O
V
O×
1.02
V
ADJ Terminal voltage ※8 VADJ 1.235 1.260 1.285 V IO=200mA
Output current IO 0.5 － － A
Dropout voltage △Vd － 0.25 0.48 V VCC=4.75V,lO=200mA ※9
Ripple rejection R.R. 45 55 － dB f=120Hz,ein=1Vrms,IO=100mA
Line Regulation Reg.I － 10 30 mV
Load Regulation Reg.L － 20 40 mV 0ｍA≦IO≦200ｍA
Swith Threshold voltage H ※７ SWH 2.0 － － V IO=0 mA
Swith Threshold voltage L ※７ SWL － － 0.5 V IO=0 mA
Swith Bias current ※７ SWI － 22 60 μASW=5V,lO=0mA
※7 BD3573,3574,3575FP/HFP only
※8 BD3572,3575FP/HFP only
※9 BD3571,3572,3574,3575FP/HFP only
※10 BD3570,3573FP/HFP :VCCD=5.5V
BD3571,3572,3574,3575FP/HFP :VCCD=6.5V
○This product is not designed for protection against radio active rays.
I
O=200mA,
V
O:Please refer to Product line.
V
CCD※10≦VCC≦25V
I
O = 0 mA
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.03 - Rev.B
BD3570FP/HFP, BD3571FP/HFP, BD3572FP/HFP, BD3573FP/HFP
BD3574FP/HFP, BD3575FP/HFP
●Reference Data: BD3574HFP（Unless otherwise specified, Ta=25℃）
50
A]
40
μ
[
CC
30
20
10
CIRCUIT CURRENT: I
0
0 5 10 15 20 25
Ta=125℃
Ta=25℃
Ta=-40℃
SUPPLY VOLTAGE: V
[V]
CC
Fig. 1 Total Supply Current
3
Vd[V]
Δ
2
1
DROPOUT VOLTAGE:
0
Ta=-40℃
0 100 200 300 400 500
OUTPUT CURRENT: I
Ta=25℃
Ta=125℃
[mA]
O
Fig. 4 Dropout Voltage
100
A]
80
μ
[
CC
60
40
20
CIRCUIT CURRENT: I
0
0 100 200 300 400 500
OUTPUT CURRENT: I
O
[mA]
Fig. 7 Total Supply Current
Classified by Load
120
A]
μ
90
[
SW
60
30
SW BIAS CURRENT: I
0
0 5 10 15 20 25
Ta=125℃
Ta=-40℃
SUPPLY VOLTAGE: V
Ta=25℃
[V]
SW
Fig. 10 SW Bias current
6
5
[V]
O
4
3
2
OUTPUT VOLTAGE: V
1
0
0 5 10 15 20 25
Ta=125℃
Ta=25℃
SUPPLY VOLTAGE: V
Fig. 2 Output Voltage VS
Power Supply Voltage
70
60
[dB]
50
R.R.
40
30
20
RIPPLE REJECTION:
10
0
10 100 1000 10000 100000 1000000
Ta=125℃
Ta=25℃
FREQU ENC Y: f [Hz]
Fig. 5 Ripple rejection
6
5
[V]
O
4
3
2
OUTPUT VOLTAGE: V
1
0
100 120 140 160 180 200
AMBIEN T T EMPER ATU RE: T
Fig. 8 Thermal Shutdown Circuit
2
Vd [V]
1.5
Δ
1
0.5
DROPOUT VOLTAGE:
0
-40 0 40 80 120
AMBIEN T TEMPER ATURE: T
Fig. 11 Dropout voltage VS
Temperature
Ta=-40℃
CC
Ta=-40℃
Technical Note
6
5
[V]
O
4
Ta=-40℃
3
2
OUTPUT VOLTAGE: V
1
0
0 500 1000 1500 2000
[V]
OUTPUT CURRENT: I
Fig. 3 Output Voltage VS Load
6
5
[V]
O
4
Ta=125℃
3
2
OUTPUT VOLTAGE: V
1
0
00.511.52
SUPPLY VOLTAGE: V
Fig. 6 Output Voltage VS
SW Input Voltage
5.5
[V]
5.25
O
5
4.75
OUTPUT VOLTAGE: V
4.5
-40 0 40 80 120
[℃]
a
AMBIEN T TEMPER ATURE: T
Fig. 9 Output Voltage VS
Temperature
50
A]
40
μ
[
cc
30
20
10
CIRCUIT CURRENT: I
0
-40 0 40 80 12 0
[℃]
a
AMBIEN T TEMPER ATU RE: T
Fig. 12 Total Supply Current
Ta=25℃
Ta=125℃
O
Ta=25℃
[mA]
Ta=-40℃
[V]
SW
[℃]
a
[℃]
a
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.03 - Rev.B
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