LP2981IM5X-3.3 datasheet(3/24 Pages) TI1

Part #	LP2981IM5X-3.3

Description	LP2981-N Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 Package

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Manufacturer	TI1 [Texas Instruments]

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LP2981-N

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SNOS773K – MARCH 2000 – REVISED APRIL 2013

ELECTRICAL CHARACTERISTICS

Limits in standard typeface are for TJ = 25°C, and limits in boldface type applyover the full operating temperature range.

Unless otherwise specified: VIN = VO(NOM) + 1V, CIN = 1 μF, IL = 1 mA, COUT = 4.7 μF,VON/OFF = 2V.

Symbol

Parameter

Conditions

Typ

LP2981AI-XX(1)

LP2981I-XX(1)

Units

Min

Max

Min

Max

ΔVO

Output Voltage Tolerance

IL = 1mA

−0.75

0.75

−1.25

1.25

1 mA < IL < 100 mA

−1.0

1.0

−2.0

2.0

%VNOM

−2.5

2.5

−3.5

3.5

Output Voltage

VO(NOM) + 1V

0.007

0.014

%/V

Line Regulation

≤ VIN ≤ 16V

0.032

VIN–VO

Dropout Voltage(2)

IL = 0

1

3

mV

5

IL = 1 mA

7

10

15

IL = 25 mA

70

100

150

IL = 100 mA

200

250

375

IGND

Ground Pin Current

IL = 0

65

95

μA

125

IL = 1 mA

80

110

170

IL = 25 mA

200

300

550

IL = 100 mA

600

800

1500

VON/OFF < 0.3V

0.01

0.8

VON/OFF < 0.15V

0.05

2

VON/OFF

ON/OFF Input Voltage(3)

High = O/P ON

1.4

1.6

V

Low = O/P OFF

0.50

0.15

ION/OFF

ON/OFF Input Current

VON/OFF = 0

0.01

−1

μA

VON/OFF = 5V

5

15

IO(PK)

Peak Output Current

VOUT ≥ VO(NOM) − 5%

400

150

mA

en

Output Noise

BW = 300 Hz–50 kHz,

160

μV

Voltage (RMS)

COUT = 10 μF

Ripple Rejection

f = 1 kHz

63

dB

COUT = 10 μF

IO(MAX)

Short Circuit Current

RL = 0 (Steady State)

(4)

150

mA

(1)

Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using

Statistical Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL).

(2)

Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a

1V differential.

(3)

The ON/OFF inputs must be properly driven to prevent misoperation. For details, refer to APPLICATION HINTS.

(4)

See TYPICAL PERFORMANCE CHARACTERISTICS curve(s).

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