LP2981IM5-3.1 datasheet(4/16 Pages) NSC

Part #	LP2981IM5-3.1

Description	Micropower 100 mA Ultra Low-Dropout Regulator

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Storage Temperature Range

−65˚C to +150˚C

Operating Junction Temperature

Range

−40˚C to +125˚C

Lead Temperature

(Soldering, 5 sec.)

260˚C

ESD Rating (Note 2)

2 kV

Power Dissipation (Note 3)

Internally Limited

Input Supply Voltage (Survival)

−0.3V to +16V

Input Supply Voltage (Operating)

2.1V to +16V

Shutdown Input Voltage (Survival)

−0.3V to +16V

Output Voltage (Survival, (Note 4))

−0.3V to +9V

I

OUT (Survival)

Short Circuit Protected

Input-Output Voltage

(Survival, (Note 5))

−0.3V to +16V

Electrical Characteristics

Limits in standard typeface are for T

J = 25˚C, and limits in boldface type applyover the full operating temperature range. Un-

less otherwise specified: V

IN =VO(NOM) + 1V, CIN = 1 µF, IL = 1 mA, COUT = 4.7 µF,VON/OFF = 2V.

Symbol

Parameter

Conditions

Typ

LP2981AI-XX

LP2981I-XX

Units

(Note 6)

Min

Max

Min

Max

∆V

O

Output Voltage

Tolerance

I

L = 1mA

−0.75

0.75

−1.25

1.25

%V

NOM

1mA < I

L < 100 mA

−1.0

1.0

−2.0

2.0

−2.5

2.5

−3.5

3.5

Output Voltage

V

O(NOM) + 1V

0.007

0.014

%/V

Line Regulation

≤ V

IN ≤ 16V

0.032

V

IN–VO

Dropout Voltage

I

L = 0

133

mV

(Note 7)

55

I

L = 1 mA

7

10

15

I

L = 25 mA

70

100

150

I

L = 100 mA

200

250

375

I

GND

Ground Pin Current

I

L = 0

65

95

µA

125

I

L = 1 mA

80

110

170

I

L = 25 mA

200

300

550

I

L = 100 mA

600

800

1500

V

ON/OFF < 0.3V

0.01

0.8

V

ON/OFF < 0.15V

0.05

2

V

ON/OFF

ON/OFF Input Voltage

High = O/P ON

1.4

1.6

V

(Note 8)

Low = O/P OFF

0.50

0.15

I

ON/OFF

ON/OFF Input Current

V

ON/OFF = 0

0.01

−1

µA

V

ON/OFF =5V

5

15

I

O(PK)

Peak Output Current

V

OUT ≥ VO(NOM) − 5%

400

150

mA

e

n

Output Noise

BW = 300 Hz–50 kHz,

160

µV

Voltage (RMS)

C

OUT =10 µF

Ripple Rejection

f = 1 kHz

63

dB

C

OUT =10 µF

I

O(MAX)

Short Circuit Current

R

L = 0 (Steady State)

150

mA

(Note 9)

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