BA3258HFP, BA33D15HFP, BA33D18HFP

Technical Note

2/8

www.rohm.co

2009.04 - Rev.A

© 2009 ROHM Co., Ltd. All rights reserved.



Electrical Characteristics

BA3258HFP (Unless otherwise specified, Ta = 25℃, Vcc = 5 V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Conditions

Bias current

IB

-

3

5

mA Io1 = 0 mA, Io2 = 0 mA

[

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

Tcvo1

-

0.01

-

%/℃ Io1 = 5 mA, Tj = 0℃ to 85℃

[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

Tcvo2

-

0.01

-

%/℃ 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.

Max.

Unit

Conditions

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

Tcvo1

-

0.01

-

%/℃ Io1 = 5 mA, Tj=0℃ to 125℃

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

Tcvo2

-

0.01

-

%/℃ Io2 = 5 mA,Tj = 0℃ to 125℃

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

Tcvo2

-

0.01

-

%/℃ Io2 = 5 mA, Tj = 0℃ to 125℃

*3: Design is guaranteed within these parameters. (No total shipment inspection is made.)