BD3951F

Technical Note

2/9

www.rohm.com

2009.07 - Rev.A

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

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Electrical Characteristics（Unless otherwise specified Ta=-40℃～+125℃，Vcc=13.5V）

Parameter

Symbol

Limit

Unit

Condition

Min.

Typ.

Max.

[Whole Device]

Input Current

Icc

-

135

210

μA

Iout=0.3mA

[Regulator Block]

Output Voltage

Vout

4.90

5.00

5.10

V

Vcc=6～20V,Iout=1～100mA

Line Regulation

Lin.Reg

-

10

20

mV

Vcc=6～20V

Load Regulation

Load.Reg

-

15

30

mV

Iout=1～100mA

Dropout Voltage

ΔVd

-

0.31

0.50

V

Vcc=4.75V, Io=100mA

Output Peak Current

Iomax

150

-

-

mA

(Current Limit)

[Reset Block]

Threshold Voltage

Vdet

Vout

×0.92

Vout

×0.94

Vout

×0.96

V

Hysteresis Voltage

Vhys

50

100

150

mV

Reset Delay Time L->H

TdLH

17

30

-

mS

CT=0.1μF

*6

Reset Delay Time H->H

TdHL

-

4

-

μS

CT=0.1μF

RES Pull Up Resistor

Rrst

10

20

40

kΩ

RES Low Output Voltage

VrL

-

0.08

0.40

V

4V<Vout<Vdet, Input Current is 0.2mA

Reset Adjustable Voltage

Vradj

1.18

1.26

1.34

V

[Vcc Detection Block]

Threshold Voltage

Vsdet

1.19

1.26

1.33

V

Hysteresis Voltage

Vsdet off

1.240

1.335

1.430

V

SOUT Pull Up Resistor

Rso

10

20

40

kΩ

SOUT Low Output Voltage

VsL

-

0.06

0.40

V

Vout>4V, Vsin<Vsdet

Input Current is 1.5mA

SIN Input Current

Isin

-1

0

1

μA

Vsin=2V

*6 TdLH set by Cct terminal capacitor. TdLH ≈ 300k×Cct