ROHM BA33D15HFP Technical data
Secondary LDO Regulators
Dual Output
Secondary Fixed Output LDO Regulators
BA3258HFP, BA33D15HFP, BA33D18HFP
●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 3.3 V 1.5 V 1 A 1 A HRP5
BA33D15HFP 3.3 V 1.5 V 0.5 A 0.5 A HRP5
BA33D18HFP 3.3 V 1.8 V 0.5 A 0.5 A HRP5
●Absolute Maximum Ratings
BA3258HFP BA33D□□ Series
Parameter
Output voltage
Vo1
Symbol Ratings Unit
Output voltage
Vo2
Current capability
Io1
Parameter
Current capability
Io2
Symbol Ratings Unit
No.11026EBT01
Package
Applied voltage VCC 15*1 V Applied voltage VCC 18*1 V
Power dissipation Pd 2300*2 mW Power dissipation Pd 2300*2 mW
Operating
temperature range
Ambient storage
temperature
Maximum junction
temperature
*1 Must not exceed Pd
*2. 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 BA33D□□Series
Parameter
Input power supply
voltage
3.3 V output current Io1 - - 1 A 3.3 V output current Io1 - - 0.5 A
1.5 V output current Io2 - - 1 A 1.5V output current Io2 - - 0.5 A
T
−30 to 85 ℃
opr
T
−55 to 150 ℃
stg
T
jmax
Symbol
4.75 - 14.0 V
V
CC
150 ℃
Ratings
Min. Typ. Max. Min. Typ. Max.
Unit
Operating
temperature range
Ambient storage
temperature
Maximum junction
temperature
Parameter
Input power supply
voltage
1.8 V output current Io2 - - 0.5 A
T
−25 to 105 ℃
opr
T
−55 to 150 ℃
stg
T
150 ℃
jmax
Symbol
4.1 - 16.0 V
V
CC
Ratings
Unit
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© 2011 ROHM Co., Ltd. All rights reserved.
1/8
2011.03 - Rev.B
BA3258HFP,BA33D15HFP,BA33D18HFP
●Electrical Characteristics
BA3258HFP (Unless otherwise specified, Ta = 25℃, Vcc = 5 V)
Parameter Symbol
Bias current IB - 3 5 mA Io1 = 0 mA, Io2 = 0 mA
[3.3 V Output Block]
Output voltage1 Vo1 3.234 3.300 3.366 V Io1 = 50 mA
Minimum output voltage difference 1 ∆Vd1 - 1.1 1.3 V Io1 = 1 A, Vcc = 3.8 V
Output current capacity 1 Io1 1.0 - - A
Ripple rejection 1 R.R.1 46 52 - dB f=120 Hz,ein=0.5Vp-p,Io1=5mA
Input stability 1 Reg.I1 - 5 15 mV Vcc = 4.75→14 V, Io1 = 5 mA
Load stability 1 Reg.L1 - 5 20 mV Io1 = 5 mA→1A
Temperature coefficient of output voltage 1*3 Tcvo1 -
[1.5 V Output Block]
Output voltage 2 Vo2 1.470 1.500 1.530 V Io2 = 50 mA
Output current capacity 2 Io2 1.0 - - A
Ripple rejection 2 R.R.2 46 52 - dB f=120 Hz,ein=0.5Vp-p,Io2=5mA
Input stability 2 Reg.I2 - 5 15 mV Vcc = 4.1→14 V, Io2 = 5 mA
Load stability 2 Reg.L2 - 5 20 mV Io2 = 5 mA→1 A
Temperature coefficient of output voltage 2*3 Tcvo2 -
*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
Bias current Ib - 0.7 1.6 mA Io1 = 0 mA, Io2 = 0 mA
[3.3V Output Block]
Output voltage 1 Vo1 3.234 3.300 3.366 V Io1 = 250 mA
Minimum output voltage difference 1 ∆Vd1 － 0.25 0.50 V Io1 = 250 mA, Vcc = 3.135 V
Output current capacity 1 Io1 0.5 - - A
Ripple rejection 1 R.R.1 - 68 - dB f=120 Hz,ein =1Vp-p,Io1=100mA
Input stability 1 Reg.I1 - 5 30 mV Vcc=4.1V→16V,Io1=250mA
Load stability 1 Reg.L1 - 30 75 mV Io1= 0 mA→0.5 A
Temperature coefficient of output voltage 1*3
BA33D15HFP Vo2 output
[1.5V Output Block]
Output voltage 2 Vo2 1.470 1.500 1.530 V Io2 = 250 mA
Output current capacity 2 Io2 0.5 - - A
Ripple rejection 2 R.R.2 - 74 - dB f=120 Hz,ein=1Vp-p,Io2=100mA
Input stability 2 Reg.I2 - 5 30 mV Vcc =4.1V→16 V,Io2=250mA
Load stability 2 Reg.L2 - 30 75 mV Io2 = 0 mA→0.5A
Temperature coefficient of output voltage 2*3 Tcvo2 -
BA33D18HFP Vo2 output
[1.8V Output Block]
Output voltage 2 Vo2 1.764 1.800 1.836 V Io2=250 mA
Output current capacity 2 Io2 0.5 - - A
Ripple rejection 2 R.R.2 - 72 - dB f =120Hz,ein =1Vp-p,Io2=100mA
Input stability 2 Reg.I2 - 5 30 mV Vcc = 4.1V→16V,Io2=250mA
Load stability 2 Reg.L2 - 30 75 mV Io2 = 0 mA→0.5 A
Temperature coefficient of output voltage 2*3 Tcvo2 -
*3: Design is guaranteed within these parameters. (No total shipment inspection is made.)
Tcvo1 - 0.01 - %/℃ Io1 = 5 mA, Tj=0℃ to 125℃
Limits
Min. Typ. Max.
0.01
0.01
Limits
Min. Typ. Max.
0.01
0.01
- %/℃ Io1 = 5 mA, Tj = 0℃ to 85℃
- %/℃ Io2 = 5 mA, Tj = 0℃ to 125℃
- %/℃ Io2 = 5 mA,Tj = 0℃ to 125℃
- %/℃ Io2 = 5 mA, Tj = 0℃ to 125℃
Unit Conditions
Unit Conditions
Technical Note
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2/8
2011.03 - Rev.B
BA3258HFP,BA33D15HFP,BA33D18HFP
●BA3258HFP Electrical Characteristics Curves (Unless otherwise specified, Ta = 25℃, Vcc = 5V)
4.0
3.5
］
mA
［
3.0
Icc
：
2.5
2.0
1.5
1.0
CIRCUIT CURRENT
0.5
0.0
0 2 4 6 8 10 12 14
SUPPLY VOLT AGE：Vcc［V
］
Fig.1 Circuit Current
(with no load)
5
］
4
mA
［
IB
：
3
2
1
CIRCUIT CURRENT
0
0.0 0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT：Io1［A
］
Fig. 2 Circuit Current vs Load Current Io2
(Io1 = 0 1 A)
5
］
4
mA
［
IB
：
3
2
1
CIRCUIT CURRENT
0
0.0 0.2 0.4 0.6 0.8 1.0
Fig. 3 Circuit Current vs Load Current Io2
4.0
3.5
］
V
［
3.0
Vo1
：
2.5
2.0
1.5
1.0
OUT PUT VOLT AGE
0.5
0.0
02468101214
SUPPLY VOLTAGE：Vcc［V
］
Fig. 4 Input Stability
(3.3 V output with no load)
1.6
1.4
］
V
［
1.2
Vo2
：
1.0
0.8
0.6
0.4
OUTPU T VOLTAGE
0.2
0.0
02468101214
SUPPLY VOLT AGE：Vcc［V
Fig. 5 Input Stability
(1.5 V output with no load)
］
4.0
3.5
］
V
［
3.0
Vo1
：
2.5
2.0
1.5
1.0
OUT PUT VOLTAGE
0.5
0.0
0.0 0.5 1.0 1.5 2.0 2.5
1.6
1.4
］
V
［
1.2
Vo2
：
1.0
0.8
0.6
0.4
OUT PUT VOLTAGE
0.2
0.0
0.0 0. 5 1.0 1.5 2. 0 2.5
OUTPUT CURRENT：Io2［A
］
Fig. 7 Load Stability
3.325
3.315
］
V
［
3.305
Vo1
：
3.295
3.285
3.275
3.265
OUTPU T VOLTAGE
3.255
3.245
-30-150 1530 456075
TEMPERATURE：Ta
［℃］
Fig. 10 Output Voltage vs Temperature
(3.3 V output)
1.4
1.2
Vd [V]
1.0
Δ
0.8
0.6
INPUT /OUTPU T
0.4
0.2
VOLTAGE D IFFER ENCE:
0.0
0.0 0.2 0.4 0. 6 0.8 1.0
OUTPUT CURRENT：Io1［A
］
Fig. 8 I/O Voltage Difference (3.3 V output)
(Vcc = 3.8 V, Io1 = 0 1 A)
1.506
1.504
］
V
［
1.502
Vo2
：
1.500
1.498
1.496
1.494
OUTPU T VOLTAGE
1.492
1.490
-30-1501530456075
TEMPERATURE：Ta
［℃］
Fig. 11 Output Voltage vs Temperature
(1.5 V output)
80
70
］
dB
［
60
R.R.
：
50
40
30
20
RIPPLE REJECTION
10
0
10 100 1000 10000
Fig. 9 R.R. Characteristics
(ein = 0.5 Vp-p, Io = 5 mA)
5.5
5.0
］
mA
4.5
［
IB
：
4.0
3.5
3.0
2.5
CIRCUIT CURRENT
2.0
1.5
-30-150 1530456075
Fig. 12 Circuit Current vs Temperature
Technical Note
OUTPUT CURRENT：Io2［A
(Io2 = 0 1 A)
OUTPUT CURRENT：Io1［A
Fig. 6 Load Stability
(3.3 V output)
R.R.(1.5 V output)
R.R.(3.3 V output)
FREQUENCY
TEMPERATURE：Ta
(Io = 0 mA)
：f［Hz］
［℃］
］
］
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© 2011 ROHM Co., Ltd. All rights reserved.
3/8
2011.03 - Rev.B
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