FAN1540 datasheet(6/15 Pages) FAIRCHILD

Part #	FAN1540

Description	1A/1.3A, LDO With Low Quiescent Current

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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6 / 15 page

FAN1539/FAN1540

PRODUCT SPECIFICATION

6

REV. 1.0.8 3/22/04

Electrical Characteristics—FAN1540D18X

Unless otherwise specified, VIN = 3.135V to 3.465V, Tj= 25°C, IMAX = 1.3A. Boldface limits apply over operating junction

temperature range of 0

TEST CONDITIONS

TEST LIMITS

Parameter

Symbol

VIN

IOUT

Min.

Typ.

Max.

Units

Output Voltage

VOUT

1.755 1.800 1.845

V

Line Regulation

REG(LINE)

310

mV

Load Regulation REG(LOAD)

3.3V

20

40

mV

Dropout Voltage

(Note 6)

VD

IOUT = IMAX

0.9

1.2

V

Current Limit

IS

3.3V

2.5

A

Min. Output

Current for

regulation

IOMIN

0

mA

Temperature

Stability

TS

IOUT = 5mA

0.3

%

RMS Output

Noise

(Note 7)

VN

IOUT = IMAX

0.003

%VOUT

Ripple Rejection

Ratio (Note 8)

RA

3.3V

IOUT = 500mA

40

dB

Transient

Response

Change of VOUT

with step load

change (Note 9)

3.3V

1mA to IMAX

2.0

10

(un-

der-

shoot

or

over-

shoot

of

VOUT)

%

IMAX to 1mA

Transient

Response

Change of VOUT

with application

of VIN

(Note 9)

0 to 1.8V Step Input

10% to 90%

3.0

10

(un-

der-

shoot

or

over-

shoot

of

VOUT)

%

°CT

J

125

°C.

≤≤

3.15V

V

IN

3.465V

≤≤

5mA

I

OUT

I

MAX

≤≤

3.135V

V

IN

3.465V

≤≤

5mA

I

OUT

I

MAX

≤≤

5mA

I

OUT

≤

I

MAX

≤

∆V

OUT

3%

≤

()

∆V

OUT

∆I

OUT

-----------------

t

r

1

µS

≥

t

f

1

µS

≥

∆V

OUT

∆V

IN

-----------------

t

r

1

µS

≥

1mA

I

OUT

≤

I

MAX

≤

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