LP8340IDTX-3.3 datasheet(5/14 Pages) NSC

Part #	LP8340IDTX-3.3

Description	Low Dropout, Low IQ, 1.0A CMOS Linear Regulator

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Manufacturer	NSC [National Semiconductor (TI)]

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LP8340C Electrical Characteristics (Continued)

Unless otherwise specified all limits guaranteed for V

IN =VO+ 1V, CIN =COUT = 10µF, TJ = 25˚C. Boldface limits apply over

the full operating temperature range of T

J = 0˚C to 125˚C

Symbol

Parameter

Conditions

Min

(Note 5)

Typ

(Note 4)

Max

(Note 5)

Units

V

IN −VO

Dropout Voltage

(Note 7) (Note 8)

LP8340-1.8

I

OUT = 800mA

680

1400

mV

LP8340-2.5

I

OUT = 800mA

550

1000

LP8340-2.5

I

OUT = 1.0A

670

1300

LP8340-3.3

LP8340-ADJ, V

OUT = 3.3V, IOUT = 800mA

420

800

LP8340-3.3

LP8340-ADJ, I

OUT = 1.0A

540

1000

LP8340-5.0

I

OUT = 800mA

330

650

LP8340-5.0

I

OUT = 1.0A

420

800

I

Q

Quiescent Current

V

IN

≤10V

19

50

µA

Minimum Load Current

V

IN −VOUT

≤4V

100

µA

I

LIMIT

Foldback Current Limit

V

IN −VOUT >5V

450

mA

V

IN −VOUT <4V

1600

Ripple Rejection Ratio

V

IN (dc) = VOUT +2V

V

IN (ac) = 1 VP-P @ 120Hz

48

55

dB

T

SD

Thermal Shutdown

Temp.

Thermal Shutdown Hyst.

160

10

˚C

ADJ Input Leakage

Current

V

ADJ = 1.5V or 0V

±0.01

±100

nA

V

OUT Leakage Current

LP8340-ADJ

ADJ = OUT, V

OUT = 2V, VIN = 10V

10

µA

LP8340-1.8, V

OUT = 2.5V, VIN = 10V

10

LP8340-2.5, V

OUT = 3.5V, VIN = 10V

10

LP8340-3.3, V

OUT = 4V, VIN = 10V

10

LP8340-5.0, V

OUT = 6V, VIN = 10V

10

e

n

Output Noise

10Hz to 10kHz, R

L =1k

Ω,C

OUT = 10µF

250

µVrms

LP8340I Electrical Characteristics

Unless otherwise specified all limits guaranteed for V

IN =VO+ 1V, CIN =COUT = 10µF, TJ = 25˚C. Boldface limits apply over

the full operating temperature range of T

J = −40˚C to 125˚C

Symbol

Parameter

Conditions

Min

(Note 5)

Typ

(Note 4)

Max

(Note 5)

Units

V

IN

Input Voltage

LP8340-ADJ,1.8, 2.5

LP8340-3.3, 5.0

2.7

10

V

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