Secondary Fixed Output LDO Regulator Series for Local Power Supplies
Dual-output Secondary Fixed Output
LDO Regulators for Local Power Supplies
BA3258HFP, BA33D15HFP, BA33D18HFP
No.09026EAT01
Description
The BA3258HFP, BA33D15HFP, BA33D18HFP are fixed 2-output low-saturation regulators with a voltage accuracy at both
outputs of
2%.
These series incorporate both overcurrent protection and thermal shutdown (TSD) circuits in order to
prevent damage due to output short-circuiting and overloading, respectively.
Features
1) Output voltage accuracy:
2%.
2) Output current capacity: 1A (BA3258HFP), 0.5A (BA33D□□ Series)
3) A ceramic capacitor can be used to prevent output oscillation (BA3258HFP).
4) High Ripple Rejection (BA33D□□ Series)
5) Built-in thermal shutdown circuit
6) Built-in overcurrent protection circuit
Applications
FPDs, TVs, PCs, DSPs in DVDs and CDs
Product
Lineup
Part Number
BA3258HFP
BA33D15HFP
BA33D18HFP
Output voltage
Vo1
3.3 V
3.3 V
3.3 V
Output voltage
Vo2
1.5 V
1.5 V
1.8 V
Current capability
Io1
1A
0.5 A
0.5 A
Current capability
Io2
1A
0.5 A
0.5 A
Package
HRP5
HRP5
HRP5
Absolute
Maximum Ratings
BA3258HFP
Parameter
Symbol
Applied voltage
V
CC
Power dissipation
Pd
Operating
T
opr
temperature range
Ambient storage
T
stg
temperature
Maximum junction
T
jmax
temperature
*1
*2.
Limits
15
*1
2300
*2
−30
to 85
−55
to 150
150
Units
V
mW
℃
℃
℃
BA33D□□ Series
Parameters
Applied voltage
Power dissipation
Operating
temperature range
Ambient storage
temperature
Maximum junction
temperature
Symbol
V
CC
Pd
T
opr
T
stg
T
jmax
Limits
18
*1
2300
*2
−25
to 105
−55
to 150
150
Units
V
mW
℃
℃
℃
Must not exceed Pd
Derated at 18.4 mW/℃ at Ta>25℃ when mounted on a glass epoxy board (70 mm
70 mm
1.6 mm)
Recommended
Operating Conditions
BA3258HFP
Parameter
Input power supply
voltage
Symbol
V
CC
Io1
Io2
Min.
4.75
-
-
Typ.
-
-
-
Max. Unit
14.0
1
1
V
A
A
BA33D□□Series
Parameter
Input power supply
voltage
Symbol
V
CC
Io1
Io2
Io2
Min.
4.1
-
-
-
Typ.
-
-
-
-
Max. Unit
16.0
0.5
0.5
0.5
V
A
A
A
3.3
V output current
1.5
V output current
3.3
V output current
1.5
V output current
1.8
V output current
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© 2009 ROHM Co., Ltd. All rights reserved.
1/8
2009.04 - Rev.A
BA3258HFP, BA33D15HFP, BA33D18HFP
Electrical
Characteristics
BA3258HFP (Unless otherwise specified, Ta = 25℃, Vcc = 5 V)
Parameter
Symbol Min.
Typ.
Bias current
[
3.3
V Output Block]
Output voltage1
Minimum output voltage difference 1
Output current capacity 1
Ripple rejection 1
Input stability 1
Load stability 1
Temperature coefficient of output voltage
[1.5 V Output Block]
Output voltage 2
Output current capacity 2
Ripple rejection 2
Input stability 2
Load stability 2
Temperature coefficient of output voltage
2
*3
Vo2
Io2
R.R.2
Reg.I2
Reg.L2
Tcvo2
1.470
1.0
46
-
-
-
1.500
-
52
5
5
0.01
1.530
-
-
15
20
-
V
A
dB
Io2 = 50 mA
1
*3
Vo1
∆Vd1
Io1
R.R.1
Reg.I1
Reg.L1
Tcvo1
3.234
-
1.0
46
-
-
-
3.300
1.1
-
52
5
5
0.01
3.366
1.3
-
-
15
20
-
V
V
A
dB
Io1 = 50 mA
IB
-
3
Technical Note
Max.
5
Unit
Conditions
mA Io1 = 0 mA, Io2 = 0 mA
Io1 = 1 A, Vcc = 3.8 V
f=120 Hz,ein=0.5Vp-p,Io1=5mA
mV Vcc = 4.75→14 V, Io1 = 5 mA
mV Io1 = 5 mA→1A
%/℃ Io1 = 5 mA, Tj = 0℃ to 85℃
f=120 Hz,ein=0.5Vp-p,Io2=5mA
mV Vcc = 4.1→14 V, Io2 = 5 mA
mV Io2 = 5 mA→1 A
%/℃ Io2 = 5 mA, Tj = 0℃ to 125℃
*3: Design is guaranteed within these parameters. (No total shipment inspection is made.)
BA33D□□ Series (Unless otherwise specified, Ta = 25℃, Vcc = 5 V)
Parameter
Symbol Min.
Typ.
Bias current
[3.3V Output Block]
Output voltage 1
Minimum output voltage difference 1
Output current capacity 1
Ripple rejection 1
Input stability 1
Load stability 1
Temperature coefficient of output voltage
BA33D15HFP Vo2 output
[1.5V Output Block]
Output voltage 2
Output current capacity 2
Ripple rejection 2
Input stability 2
Load stability 2
Temperature coefficient of output voltage 2
*3
BA33D18HFP Vo2 output
[1.8V Output Block]
Output voltage 2
Output current capacity 2
Ripple rejection 2
Input stability 2
Load stability 2
Temperature coefficient of output voltage 2
*3
1
*3
Vo1
∆Vd1
Io1
R.R.1
Reg.I1
Reg.L1
Tcvo1
3.234
－
0.5
-
-
-
-
3.300
0.25
-
68
5
30
0.01
Ib
-
0.7
Max.
1.6
3.366
0.50
-
-
30
75
-
Unit
Conditions
mA Io1 = 0 mA, Io2 = 0 mA
V
V
A
dB
f=120 Hz,ein =1Vp-p,Io1=100mA
mV Vcc=4.1V→16V,Io1=250mA
mV Io1= 0 mA→0.5 A
%/℃ Io1 = 5 mA, Tj=0℃ to 125℃
Io1 = 250 mA
Io1 = 250 mA, Vcc = 3.135 V
Vo2
Io2
R.R.2
Reg.I2
Reg.L2
Tcvo2
1.470
0.5
-
-
-
-
1.500
-
74
5
30
0.01
1.530
-
-
30
75
-
V
A
dB
Io2 = 250 mA
f=120 Hz,ein=1Vp-p,Io2=100mA
mV Vcc =4.1V→16 V,Io2=250mA
mV Io2 = 0 mA→0.5A
%/℃ Io2 = 5 mA,Tj = 0℃ to 125℃
Vo2
Io2
R.R.2
Reg.I2
Reg.L2
Tcvo2
1.764
0.5
-
-
-
-
1.800
-
72
5
30
0.01
1.836
-
-
30
75
-
V
A
dB
Io2=250 mA
f =120Hz,ein =1Vp-p,Io2=100mA
mV Vcc = 4.1V→16V,Io2=250mA
mV Io2 = 0 mA→0.5 A
%/℃ Io2 = 5 mA, Tj = 0℃ to 125℃
*3: Design is guaranteed within these parameters. (No total shipment inspection is made.)
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© 2009 ROHM Co., Ltd. All rights reserved.
2/8
2009.04 - Rev.A
BA3258HFP, BA33D15HFP, BA33D18HFP
BA3258HFP
Electrical Characteristics Curves
(Unless otherwise specified, Ta = 25℃, Vcc = 5V)
4.0
CIRCUIT CURRENT
：
Icc
［
mA
½
3.5
CIRCUIT CURRENT：IB［mA½
CIRCUIT CURRENT：IB［mA½
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10
12
14
SUPPLY VOLTAGE：Vcc［V½
0
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT：Io1［A½
0
0.0
0.2
4
4
5
5
Technical Note
3
3
2
2
1
1
0.4
0.6
0.8
1.0
OUTPUT CURRENT：Io2［A½
Fig.1 Circuit Current
(with no load)
4.0
3.5
OUTPUT VOLTAGE：Vo1［V½
Fig. 2 Circuit Current vs Load Current
Io2 (Io1 = 0
1
A)
1.6
1.4
OUTPUT VOLTAGE：Vo2［V½
OUTPUT VOLTAGE：Vo1［V½
Fig. 3 Circuit Current vs Load
Current Io2 (Io2 = 0
1 A)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10
12
14
SUPPLY VOLTAGE：Vcc［V½
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
2
4
6
8
10
12
14
SUPPLY VOLTAGE：Vcc［V½
0.0
0.5
1.0
1.5
2.0
2.5
OUTPUT CURRENT：Io1［A½
Fig. 4 Input Stability
(3.3 V output with no load)
INPUT/OUTPUT VOLTAGE DIFFERENCE
：
ΔVd［V½
Fig. 5 Input Stability
(1.5 V output with no load)
1.4
RIPPLE REJECTION：R.R.［dB½
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT：Io1［A½
80
70
60
50
40
30
20
10
0
10
Fig. 6 Load Stability
(3.3 V output)
1.6
1.4
OUTPUT VOLTAGE：Vo2［V½
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
0.5
1.0
1.5
2.0
2.5
OUTPUT CURRENT：Io2［A½
R.R.(1.5 V output)
R.R.(3.3 V output)
100
1000
10000
FREQUENCY：f［Hz½
Fig. 7 Load Stability
Fig. 8 I/O Voltage Difference
(3.3 V output)
(Vcc = 3.8 V, Io1 = 0
1 A)
1.506
1.504
OUTPUT VOLTAGE：Vo2［V½
Fig. 9 R.R. Characteristics
(ein = 0.5 Vp-p, Io = 5 mA)
5.5
5.0
CIRCUIT CURRENT：IB［mA½
4.5
4.0
3.5
3.0
2.5
2.0
1.5
3.325
3.315
OUTPUT VOLTAGE：Vo1［V½
3.305
3.295
3.285
3.275
3.265
3.255
3.245
-30
-15
0
15
30
45
60
75
TEMPERATURE：Ta［
℃
½
1.502
1.500
1.498
1.496
1.494
1.492
1.490
-30
-15
0
15
30
45
60
75
TEMPERATURE：Ta［℃½
-30
-15
0
15
30
45
60
75
TEMPERATURE：Ta［℃½
Fig. 10 Output Voltage vs
Temperature (3.3 V output)
Fig. 11 Output Voltage vs
Temperature (1.5 V output)
Fig. 12 Circuit Current vs
Temperature (Io = 0 mA)
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© 2009 ROHM Co., Ltd. All rights reserved.
3/8
2009.04 - Rev.A
BA3258HFP, BA33D15HFP, BA33D18HFP
BA33D15HFP
Electrical Characteristics Curves
(Unless otherwise specified, Ta = 25℃, Vcc = 5V)
1.4
CIRCUIT CURRENT
：
Icc
［
mA
½
CIRCUIT CURRENT：Icc［mA½
40
35
Technical Note
40
35
CIRCUIT CURRENT：Icc［mA½
30
25
20
15
10
5
0
0.0
0.1
0.2
0.3
0.4
0.5
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
2
4
6
8
10
12
14
16
18
SUPPLY VOLTAGE：Vcc［V½
30
25
20
15
10
5
0
OUTPUT CURRENT：Io1［A½
0.0
0.1
0.2
0.3
0.4
0.5
OUTPUT CURRENT：Io2［A½
Fig. 13 Circuit Current (with no
load)
4.0
3.5
OUTPUT VOLTAGE：Vo1［V½
Fig. 14 Circuit Current vs Load Current
Io1 (Io1 = 0
500 mA)
1.6
1.4
OUTPUT VOLTAGE：Vo2［V½
1.2
1.0
0.8
0.6
0.4
0.2
0.0
OUTPUT VOLTAGE：V
OUT
［V½
Fig. 15 Circuit Current vs Load
Current Io2 (Io2 = 0
500 mA)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10 12 14 16 18
SUPPLY VOLTAGE：Vcc［V½
0
2
4
6
8
10 12 14 16 18
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
SUPPLY VOLTAGE：Vcc［V½
OUTPUT CURRENT：Io1［A½
Fig. 16 Input Stability
(3.3 V output, Io1 = 250 mA）
INPUT/OUTPUT VOLTAGE DIFFERENCE
：
ΔVd［V½
Fig. 17 Input Stability
(1.5 V output, Io2 = 250 mA)
0.5
Fig. 18 Load Stability
(3.3 V output)
80
RIPPLE REJECTION：R.R.［dB½
1.6
1.4
OUTPUT VOLTAGE：V
OUT
［V½
70
Vo2(1.5V output)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
OUTPUT CURRENT
：
Io2
［
A
½
0.4
60
50
40
30
20
10
0
Vo1(3.3V output)
0.3
0.2
0.1
0.0
0.0
0.1
0.2
0.3
0.4
0.5
OUTPUT CURRENT：Io1［A½
100
1000
FREQUENCY
：
f
［
Hz
½
10000
Fig. 19 Load Stability
(1.5 V output)
3.45
3.40
3.35
3.30
3.25
3.20
3.15
-25 -10
5
20
35
50
65
80
95
TEMPERATURE
：
Ta
［℃½
Fig. 20 I/O Voltage Difference
(Vcc = 3.135 V, 3.3 V output)
1.60
Fig. 21 R.R. Characteristics
(ein = 1 Vp-p, Io = 100 mA)
1050
950
OUTPUT VOLTAGE：Vo1［V½
1.55
CIRCUIT CURRENT：Icc［mA½
-25 -10
5
20
35
50
65
80
95
OUTPUT VOLTAGE：Vo2［V½
850
750
650
550
450
350
250
-25
-5
15
35
55
75
95
1.50
1.45
1.40
TEMPERATURE：Ta［℃½
TEMPERATURE：Ta［℃½
Fig. 22 Output Voltage vs Temperature
(3.3 V output)
Fig. 23 Output Voltage vs Temperature
(1.5 V output)
Fig. 24 Circuit Current vs Temperature
(Io = 0 mA)
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© 2009 ROHM Co., Ltd. All rights reserved.
4/8
2009.04 - Rev.A
BA3258HFP, BA33D15HFP, BA33D18HFP
Block
Diagrams / Standard Example Application Circuits
BA3258HFP
V
O1
5
3.3V
C
O1
1F
Technical Note
Current
Limit
Pin No.
1
2
3
4
5
FIN
Pin name
Vcc
V
02
_S
GND
Vo2
Vo1
GND
V
O2
4
Current
Limit
GND
FIN
1.5V
C
O2
1F
GND
3
2
V
02
_S
Thermal
Shutdown
Function
Power supply pin
Output voltage monitor
pin
GND pin
1.5
V output pin
3.3
V output pin
GND pin
TOP VIEW
PIN
V
REF
Vcc
1
V
IN
C
IN
3.3F
Vcc (1 Pin)
Vo1 (5 Pin)
Vo2 (4 Pin)
External capacitor
setting range
Approximately 3.3
F
1
F
to 1000
F
1
F
to 1000
F
1 2 3 4 5
Fig.25 BA3258HFP Block Diagram
BA33D□□ Series
GND(Fin)
Vcc
Reference
Voltage
Current
Limit
Vcc
HRP5
Sat.
Prevention
Pin No.
1
2
3
4
5
FIN
Pin name
Vcc
N.C.
GND
Vo1
Vo2
GND
Function
Power supply pin
N.C. pin
GND pin
3.3
V output pin
1.5
V/1.8 V output pin
GND pin
TOP VIEW
Vcc
Vcc
*The N.C. pin is not electrically connected internally
Thermal
Shut Down
Current
Limit
PIN
Sat.
Prevention
Vcc (1 Pin)
Vo1 (4 Pin)
Vo2 (5 Pin)
Vo2
5
Co
10F
External capacitor
setting range
Approximately 3.3
F
10
F
to 1000
F
10
F
to 1000
F
1 2 3 4 5
Vcc
1
1F
2
N.C.
GND
3
Vo1
4
Co
10F
HRP5
Fig.26 BA33D□□ Series Block Diagram
Input
/ Output Equivalent Circuits
BA3258HFP
Vcc
Vcc
BA33D□□ Series
Vcc
Vo2
Vo1
Vo2_S
Vo1/Vo2
Fig. 27 BA3258HFP Input / Output Equivalent Circuit
Fig. 28 BA33D□□ Series
Equivalent Circuit Diagrams
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© 2009 ROHM Co., Ltd. All rights reserved.
5/8
2009.04 - Rev.A
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