LP2981A-29DBVT datasheet(6/22 Pages) TI1

Part #	LP2981A-29DBVT

Description	100-mA Ultra-Low Dropout Regulators With Shutdown

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Manufacturer	TI1 [Texas Instruments]

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Load Current (mA)

0

10

20

30

40

50

60

70

80

90

100

3.2775

3.28

3.2825

3.285

3.2875

3.29

3.2925

3.295

3.2975

3.3

3.3025

3.305

3.3075

3.31

3.3125

3.315

D001

6

LP2981-28, LP2981-29, LP2981-30

LP2981-33, LP2981-50, LP2981A-28

LP2981A-29, LP2981A-30, LP2981A-33, LP2981A-50

SLVS521G – JULY 2004 – REVISED AUGUST 2016

www.ti.com

Product Folder Links: LP2981-28 LP2981-29 LP2981-30 LP2981-33 LP2981-50 LP2981A-28 LP2981A-29 LP2981A-

30 LP2981A-33 LP2981A-50

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Electrical Characteristics: LP2981A-xx (continued)

at specified free-air temperature range, VIN = VOUT(NOM) + 1 V, VON/OFF = 2 V, CIN = 1 µF, IL = 1 mA, COUT = 4.7 µF

(unless otherwise noted)

PARAMETER

TEST CONDITIONS

TA

MIN

TYP

MAX

UNIT

(2)

The ON/OFF input must be actively terminated. Connect to VIN if this function is not used (see Application and Implementation).

IGND

Ground pin current

IL = 0

25°C

65

95

µA

–40°C to 125°C

125

IL = 1 mA

25°C

80

110

–40°C to 125°C

170

IL = 25 mA

25°C

200

300

–40°C to 125°C

550

IL = 100 mA

25°C

600

1000

–40°C to 125°C

1700

VON/OFF < 0.3 V (OFF)

25°C

0.01

0.8

VON/OFF < 0.15 V (OFF)

–40°C to 105°C

0.05

2

–40°C to 125°C

5

VON/OFF

ON/OFF input

voltage(2)

High = O/P ON

25°C

1.4

V

–40°C to 125°C

1.6

Low = O/P OFF

25°C

0.5

–40°C to 125°C

0.15

ION/OFF

ON/OFF input

current

VON/OFF = 0

25°C

0.01

µA

–40°C to 125°C

–1

VON/OFF = 5 V

25°C

5

–40°C to 125°C

15

IOUT(PK)

Peak output current

VOUT ≥ VOUT(NOM) – 5%

25°C

150

400

mA

Vn

Output noise voltage

(RMS)

BW = 300 Hz to 50 kHz,

COUT = 10 µF

25°C

160

µV

ΔVOUT/ΔVIN

Ripple rejection

f = 1 kHz, COUT = 10 µF

25°C

63

dB

IOUT(MAX)

Short-circuit current

RL = 0 (steady state)

25°C

150

mA

6.7 Typical Characteristics

Unless otherwise specified: TA = 25°C, VIN = VO(NOM) + 1 V, COUT = 10 µF, CIN = 1 µF all voltage options, ON/OFF pin tied to

VIN.

Figure 1. Load Regulation - LP2981-33

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LP2981A-29DBVT Datasheet(PDF) 6 Page - Texas Instruments

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