LP2989 datasheet(5/34 Pages) TI1

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LP2989

www.ti.com

SNVS083O – FEBRUARY 2005 – REVISED MARCH 2015

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

UNIT

Operating junction temperature

–40

125

°C

Operating input supply voltage

2.1

6.4 Thermal Information

LP2989

THERMAL METRIC(1)

WSON (NGN)

SOIC (D)

VSSOP (DGK)

UNIT

8 PINS

RθJA

Junction-to-ambient thermal resistance, High-K

34.8

114.5

156.5

RθJC(top)

Junction-to-case (top) thermal resistance

28.4

61.1

51.0

RθJB

Junction-to-board thermal resistance

12.0

55.6

76.5

°C/W

ψJT

Junction-to-top characterization parameter

0.2

9.7

4.9

ψJB

Junction-to-board characterization parameter

12.2

54.9

75.2

RθJC(bot)

Junction-to-case (bottom) thermal resistance

1.3

n/a

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

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

−0.75

0.75

−1.25

1.25

1 mA < IOUT < 500 mA,

VOUT(NOM) + 1 V ≤ VIN ≤ 16

−1.5

1.5

−2.5

2.5

1 mA < IOUT < 500 mA,

VOUT

Output voltage tolerance

%VNOM

VOUT(NOM) + 1 V ≤ VIN ≤ 16

−4

2.5

−5

3.5

V, –40°C

≤ TJ ≤ 125°C

1 mA < IOUT < 500 mA,

VOUT(NOM) + 1 V ≤ VIN ≤ 16

−3.5

2.5

−4.5

3.5

−25°C ≤ TJ ≤ 125°C

VOUT(NOM) + 1 V ≤ VIN ≤ 16

0.005

0.014

0.005

0.014

Output voltage line

ΔVOUT/ΔVIN

%/V

regulation

VOUT(NOM) + 1 V ≤ VIN ≤ 16

0.005

0.032

0.005

0.032

V, –40°C

≤ TJ ≤ 125°C

ΔVOUT/ΔIOUT Load regulation

1 mA < IOUT < 500 mA

0.4

%VNOM

IOUT = 100 µA

IOUT = 100 µA, –40°C ≤ TJ ≤

125°C

IOUT = 200 mA

150

200

150

200

VIN – VOUT

Dropout voltage(2)

IOUT = 200 mA, –40°C ≤ TJ

150

300

150

300

≤ 125°C

IOUT = 500 mA

310

425

310

425

IOUT = 500 mA, –40°C ≤ TJ

310

650

310

650

≤ 125°C

(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

1-V differential.

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