LP2988AIM-5.0 datasheet(4/30 Pages) TI1

Part #	LP2988AIM-5.0

Description	Micropower, 200 mA Ultra Low-Dropout Voltage Regulator

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Manufacturer	TI1 [Texas Instruments]

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LP2987, LP2988

SNVS004J – MARCH 1999 – REVISED APRIL 2013

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ELECTRICAL CHARACTERISTICS (continued)

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

Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 4.7 µF, CIN = 2.2 µF, VS/D = 2V.

LM2987/8AI-X.X (1)

LM2987/8I-X.X (1)

Symbol

Parameter

Conditions

Typical

Units

Min

Max

Min

Max

VIN–VO

Dropout Voltage

IL = 100 µA

2.0

1

(2)

3.5

IL = 75 mA

120

90

mV

170

IL = 200 mA

230

180

350

IGND

Ground Pin Current

IL = 100 µA

120

100

150

µA

IL = 75 mA

800

500

1400

IL = 200 mA

2.1

1

mA

3.7

VS/D < 0.3V

0.05

1.5

µA

IO(PK)

Peak Output Current

VOUT ≥ VO(NOM) − 5%

400

250

mA

IO(MAX)

Short Circuit Current

RL = 0 (Steady State)

(3)

400

en

LP2987 Output Noise

BW = 300 Hz to

Voltage (RMS)

50 kHz, VOUT = 3.3V

100

COUT = 10 µF

µV(RMS)

LP2988 Output Noise

BW = 300 Hz to 50 kHz,

Voltage (RMS)

VOUT = 3.3V

20

COUT = 10 µF

CBYPASS = .01 µF

ΔVOUT/ΔVIN

Ripple Rejection

f = 1 kHz, COUT = 10 µF

65

dB

CBYP = 0 (LP2988)

ΔVOUT/ΔT

Output Voltage

(4)

20

ppm/°C

Temperature Coefficient

IDELAY

Delay Pin Current Source

1.6

2.8

1.6

2.8

2.2

µA

1.4

3.0

1.4

3.0

SHUTDOWN INPUT

VS/D

S/D Input Voltage

VH = O/P ON

1.4

1.6

V

(5)

VL = O/P OFF

0.55

0.18

IS/D

S/D Input Current

VS/D = 0

0

−1

µA

VS/D = 5V

5

15

(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)

See TYPICAL PERFORMANCE CHARACTERISTICS curves.

(4)

Temperature coefficient is defined as the maximum (worst-case) change divided by the total temperature range.

(5)

To prevent mis-operation, the Shutdown input must be driven by a signal that swings above VH and below VL with a slew rate not less

than 40 mV/µs (see APPLICATION HINTS).

4

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