LP2989ILDX-3.3 datasheet(6/34 Pages) TI1

Part #	LP2989ILDX-3.3

Description	Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator

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Manufacturer	TI1 [Texas Instruments]

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LP2989

SNVS083O – FEBRUARY 2005 – REVISED MARCH 2015

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Electrical Characteristics (continued)

Unless otherwise specified: TJ = 25°C, VIN = VOUT(NOM) + 1 V, IOUT = 1 mA, COUT = 4.7 µF, CIN = 2.2 µF, VSD = 2 V.

LP2989AI-X.X(1)

LP2989I-X.X (1)

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

IOUT = 100 µA

110

175

110

175

µA

IOUT = 100 µA, –40°C ≤ TJ ≤

110

200

110

200

125°C

IOUT= 200 mA

1

2

1

2

mA

IOUT = 200 mA, –40°C ≤ TJ

1

3.5

1

3.5

≤ 125°C

IGND

Ground pin current

IOUT = 500 mA

3

6

3

6

mA

IOUT = 500 mA, –40°C ≤ TJ

3

9

3

9

≤ 125°C

VSD < 0.18 V, –40°C ≤ TJ ≤

0.5

2

0.5

2

125°C

µA

VSD < 0.4 V

0.05

0.8

0.05

0.8

IOUT(PK)

Peak output current

VOUT ≥ VOUT(NOM) − 5%

600

800

600

800

mA

IOUT(MAX)

Short circuit current

RL = 0 (Steady State)

(3)

1000

mA

BW = 100 Hz to 100 kHz,

Output noise voltage

en

COUT = 10 µF, CBYPASS =

18

µV(RMS)

(RMS)

.01 µF, VOUT = 2.5 V

ΔVOUT/ΔVIN

Ripple Rejection

f = 1 kHz, COUT = 10 µF

60

dB

Output voltage

ΔVOUT/ΔTD

See(4), –40°C

≤ TJ ≤ 125°C

20

ppm/°C

temperature coefficient

SHUTDOWN INPUT

VH = Output ON

1.4

VH = Output ON, –40°C ≤ TJ

1.6

≤ 125°C

VSD

SD Input voltage

V

VL = Output OFF

0.5

VL = Output OFF, IIN ≤ 2 µA,

0.18

–40°C

≤ TJ ≤ 125°C

VSD = 0

0.001

VSD = 0, –40°C ≤ TJ ≤

−1

125°C

ISD

SD Input current

µA

VSD = 5 V

5

VSD = 5 V, –40°C ≤ TJ ≤

15

125°C

ERROR COMPARATOR

VOH = 16 V

0.001

1

0.001

1

IOH

Output “HIGH” leakage

µA

VOH = 16 V, –40°C ≤ TJ ≤

0.001

2

0.001

2

125°C

VIN = VOUT(NOM) − 0.5 V,

150

220

150

220

IOUT(COMP) = 150 µA

VOL

Output “LOW” voltage

mV

VIN = VOUT(NOM) − 0.5 V,

IOUT(COMP) = 150 µA, –40°C

150

350

150

350

≤ TJ ≤ 125°C

−6

−4.8

−3.5

−6

−4.8

−3.5

VTHR(MAX)

Upper threshold voltage

%VOUT

–40°C

≤ TJ ≤ 125°C

−8.3

−4.8

−2.5

−8.3

−4.8

−2.5

−8.9

−6.6

−4.9

−8.9

−6.6

−4.9

VTHR(MIN)

Lower threshold voltage

–40°C

≤ TJ ≤ 125°C

−13

−6.6

−3

−13

−6.6

−3

%VOUT

HYST

Hysteresis

2

(3)

See the Typical Characteristics section.

(4)

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

6

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