BD3502FVM(2008) データシートの表示（PDF） - ROHM Semiconductor

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BD3502FVM
(Rev.:2008)

Ultra Low Dropout Linear Regulator Controllers for PC Chipsets

ROHM Semiconductor 

●ELECTRICAL CHARACTERISTICS

(unless otherwise noted, Ta=25℃ VCC=5V VIN=3.3V Ven=3V. R1=R1'=∞Ω, R2=R2'=0Ω)

◎BD3504FVM

Parameter

Symbol

Standard Value

MIN

TYP

MAX

Unit

Bias Current

ICC

-

0.85

1.7

mA

Condition

Shut Down Mode Current

Feed Back Voltage 1

Feed Back Voltage 2

Output Voltage

Line Regulation

IST

VFB1

VFB2

Vo

Reg.l

-

0.643

0.630

-

-

0

0.650

0.650

1.20

0.1

10

0.657

0.670

-

0.5

uA Ven=0V

V Io=50mA

V

Vcc=4.5V to 5.5V ,

Ta=-10℃ to 100℃(※)

V

R1=R1'=3.9kΩ,

R2=R2'=3.3KΩ

%/V VCC=4.5V to 5.5V

Load Regulation

[Enable]

High Level Enable Input

Voltage

Low Level Enable Input

Voltage

Enable pin Input Current

[Voltage Feed Back]

VFB Input Bias Current

[Source Voltage]

Reg.L

-

0.5

10

mV Io=0 to 3A

Enhi

2

-

Vcc

V

Enlow

-0.3

-

Ien

-

7

0.8

V

10

uA Ven=3V

IFB

-

80

-

nA

VS Input Bias Current

VS Standby Current

[Output MOSFET Driver]

MOSFET Driver Source

Current

ISBIAS

-

1.2

2.4

mA

ISSTB

150

-

-

mA VS=1V Ven=0V

IGSO

2

3

4

mA VFB=0.6V,VGATE=2.5V

MOSFET Driver Sink Current

IGSI

2

3

4

[UVLO]

VCC UVLO

VccUVLO 4.20

4.35

4.50

VCC UVLO Hysterisis

Vcchys

100

160

220

mA VFB=0.7V,VGATE=2.5V

V Vcc:Sweep up

mV Vcc:Sweep down

VD UVLO

[Drain Voltage Sensing]

VD Input bias Current

[NRCS/SCP]

VDUVLO Vo×0.6 Vo×0.7 Vo×0.8

Ivd

-

0

-

V VD:Sweep up

nA

NRCS Charge Current

SCP Charge Current

SCP Discharge Current

SCP Threshold Voltage

Inrcs

14

20

26

uA VNRCS=0.5V

Iscpch

14

20

26

uA VNRCS=0.5V

IscpDi

0.3

-

-

mA VNRCS=0.5V

Vscp

1.2

1.3

1.4

V

Short Detect Voltage

NRCS Stand-by Voltage

Voscp Vo×0.3 Vo×0.35 Vo×0.4

V

VSTB

-

-

50

mV

(※) Design Guarantee

4/16

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