LP2992AIM5-2.5 datasheet(6/35 Pages) TI1

Part #	LP2992AIM5-2.5

Description	Micropower 250-mA Low-Noise Ultralow-Dropout Regulator in SOT-23

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Manufacturer	TI1 [Texas Instruments]

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LP2992

SNVS171I – NOVEMBER 2001 – REVISED NOVEMBER 2015

www.ti.com

Electrical Characteristics (continued)

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

MAX (maximum) limits apply over the recommended operating temperature range unless otherwise noted; typical limits apply

for TA = TJ = 25°C.

LP2992AI-X.X(1)

LP2992I-X.X (1)

PARAMETER

TEST CONDITIONS

TYP

UNIT

MIN

MAX

MIN

MAX

IL = 0 mA, TJ = 25°C

65

95

IL = 0 mA

125

IL = 1 mA, TJ = 25°C

75

110

IL = 1 mA

170

IL = 50 mA, TJ = 25°C

350

600

IL = 50 mA

1000

IGND

Ground pin current

µA

IL = 150 mA, TJ = 25°C

850

1500

IL = 150 mA

2500

IL = 250 mA, TJ = 25°C

1500

2300

IL = 250 mA

4000

VON/OFF < 0.3 V, TJ = 25°C

0.01

0.8

VON/OFF < 0.15 V

0.05

2

High = O/P ON

1.4

1.6

VON/OFF

ON/OFF input voltage(3)

V

Low = O/P OFF

0.55

0.15

VON/OFF = 0

0.01

–2

ION/OFF

ON/OFF input current

µA

VON/OFF = 5 V

5

15

Bandwidth = 300 Hz to 50 kHz

en

Output noise voltage (RMS)

COUT = 10 µF

30

µV

CBYPASS = 10 nF

f = 1 kHz, CBYPASS = 10 nF

ΔVOUT/ΔVIN Ripple rejection

45

dB

COUT = 10 µF

IO(SC)

Short-circuit current

RL = 0 (steady state)

(4)

400

mA

IO(PK)

Peak output current

VOUT ≥ VO(NOM) – 5%

350

mA

(3)

The ON/OFF input must be properly driven to prevent possible mis-operation. For details, see Operation with ON/OFF Control.

(4)

The LP2992 has thermal foldback current limiting which allows a high peak current when VOUT > 0.5 V, and then reduces the maximum

output current as VOUT is forced to ground (see Typical Characteristics curves).

6

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