Technical Note

2/14

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2010.05 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

BD3506F,BD3506EFV

●

Recommended Operating Conditions(Ta=25℃)

Parameter

Symbol

Ratings

Unit

MIN

MAX

Input Voltage1

VCC

4.3

5.5

V

Input Voltage2

VIN

1.2

VCC-1 *

5

V

Output Voltage

Vo

VFB

2.5

V

Enable Input Voltage

Ven

-0.3

5.5

V

Capacitor in NRCS pin

CNRCS

0.001

1

µF

*5 However, irrespective of charging order of VCC and VIN.

* No radiation-resistant design is adopted for the present product.

●

Electrical Characteristics (unless otherwise noted, Ta=25 VCC=5V Ven=3V VIN=1.8V R1=3.9KΩ R2=3.3KΩ)

Parameter

Symbol

Limits

Unit

Condition

MIN

TYP

MAX

Bias Current

-

0.7

1.4

mA

Bias current

-

0

10

µA

Ven=0V

Shut-Down Mode Current

-

1.200

-

V

Io=50mA

Output Voltage

Io

2.5

-

-

A

Maximum Output Current

Iost

-

2.0

-

A

Vo=0V

Maximum Short Current

Tcvo

-

0.01

-

%/℃

Temperature coefficient of Output Voltage

0.643

0.650

0.657

V

Io=50mA

Feed Back Voltage 1

0.630

0.650

0.670

V

Io=0 to 2A, Ta=-10 to 100℃*

5

Feed Back Voltage 2

Reg.l1

-

0.1

0.5

%/V VCC=4.3V to 5.5V

Line Regulation 1

Reg.l2

-

0.1

0.5

%/V VIN=1.2V to 3.3V

Line Regulation 2

Reg.L

-

0.5

10

mV

Io=0 to 2A

Dropout Voltage (BD3506F)

dVo

-

120

200

mV

Io=1A,VIN=1.2V, Ta=-10 to 100℃*

5

Dropout Voltage (BD3506EFV)

dVo

-

100

160

mV

Io=1A,VIN=1.2V, Ta=-10 to 100℃*

5

Standby Discharge Current

Iden

150

-

-

mA

Ven=0V, Vo=1V

[Enable]

High level Enable Input Voltage

Enhi

2

-

5.5

V

Low level Enable Input Voltage

Enlow

-0.3

-

0.8

V

Enable pin Input Current

Ien

-

7

10

µA

Ven=3V

[Voltage Feed Back]

Feed Back terminal Bias Current

-100

0

100

nA

[NRCS]

NRCS Charge Current

Inrcs

14

20

26

µA

Vnrcs=0.5V

NRCS Standby Voltage

-

0

50

mV

Ven=0V

[UVLO]

VCC UVLO

4.15

4.30

V

Vcc:Sweep-up

VCC UVLO Hysteresis

Vcchys

100

160

220

mV

Vcc:Sweep-down

*5 Design Guarantee