Technical Note

BH□□NB1WHFV series

2/8

www.rohm.com

2011.01 - Rev.B

© 2011 ROHM Co., Ltd. All rights reserved.

●

Absolute maximum ratings

Parameter

Symbol

Ratings

Unit

Applied power supply voltage

VMAX

−0.3 to +6.0

V

Power dissipation

Pd

mW

Operating temperature range

Topr

−40 to +85

°C

Storage temperature range

Tstg

−55 to +125

°C

*1: Reduce by 4.1 mW/

C over 25C, when mounted on a glass epoxy PCB (70 mm  70 mm  1.6 mm).

●

Recommended operating ranges (not to exceed Pd)

Parameter

Symbol

Ratings

Unit

Power supply voltage

2.5 to 5.5

V

Output current

0 to 150

mA

●

Recommended operating conditions

Parameter

Symbol

Ratings

Unit

Conditions

Min.

Typ.

Max.

Input capacitor

—

—

µF

The use of ceramic

capacitors is recommended.

Output capacitor

—

—

µF

The use of ceramic

capacitors is recommended.

*2 Make sure that the output capacitor value is not kept lower than this specified level across a variety of temperature, DC bias characteristic.

And also make sure that the capacitor value cannot change as time progresses.

●

Electrical characteristics

Parameter

Symbol

Limits

Unit

Conditions

Min.

Typ.

Max.

Output voltage

0.99

1.01

V

Circuit current

IGND

—

60

100

µA

Circuit current (STBY)

ISTBY

—

—

1.0

µA

STBY = 0 V

Ripple rejection ratio

RR

—

80

—

dB

VRR = −20 dBv, fRR = 1 kz,

Load response 1

LTV1

—

25

—

mV

Load response 2

LTV2

—

25

—

mV

Dropout voltage 1

VSAT1

—

80

150

mV

Dropout voltage 2

VSAT2

—

250

450

mV

Line regulation

VDL1

—

1

20

mV

Load regulation 1

VDLO1

—

6

30

mV

Load regulation 2

VDLO2

—

9

90

mV

Overcurrent protection

limit current

ILMAX

—

250

—

mA

 0.98

Short current

ISHORT

—

50

—

mA

STBY pull-down resistance

RSTB

275

550

1100

kΩ

STBY control voltage

ON

VSTBH

1.5

—

V

OFF

VSTBL

−0.3

—

0.3

V

* This IC is not designed to be radiation-resistant.