LP3982 datasheet(5/28 Pages) TI1

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LP3982

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SNVS185E – FEBRUARY 2002 – REVISED OCTOBER 2015

6.5 Electrical Characteristics

Unless otherwise specified, all limits are specified for VIN = VOUT + 0.5 V

(1), V

SHDN = VIN, CIN = COUT = 2.2 μF, CCC = 33 nF, TJ

= 25°C.

PARAMETER

TEST CONDITIONS

MIN(2)

TYP(3)

MAX(2)

UNIT

VIN

Input voltage

For operating temperature extremes:

2.5

−40°C to 85°C

100

μA ≤ IOUT ≤ 300 mA

VIN = VOUT + 0.5 V

(1)

−2

% of VOUT

SET = OUT for the ADJ Versions

ΔVOUT

Output voltage tolerance

(NOM)

For operating temperature extremes:

−3

−40°C to 85°C

Output adjust range

ADJ version only;

VOUT

for operating temperature extremes:

1.25

−40°C to 85°C

Maximum output current

Average DC current rating;

IOUT

For operating temperature extremes:

300

−40°C and 85°C

Output current limit

770

ILIMIT

For operating temperature extremes:

330

−40°C to 85°C

IOUT = 0 mA

IOUT = 0 mA;

Supply current

for operating temperature extremes:

270

μA

−40°C to 85°C

IOUT = 300 mA

225

Shutdown supply current

VO = 0 V, SHDN = GND

0.001

μA

IOUT = 1 mA

0.4

IOUT = 200 mA

IOUT = 200 mA;

VDO

Dropout voltage(1)(4)

for operating temperature extremes:

220

−40°C to 85°C

IOUT = 300 mA

120

IOUT = 1 mA,

0.01

(VOUT + 0.5 V) ≤ VI ≤ 6 V

(1)

IOUT = 1 mA, (VOUT + 0.5 V) ≤ VI ≤ 6

Line regulation

%/V

ΔVOUT

V(1);

−0.1

0.1

for operating temperature extremes:

−40°C to 85°C

Load regulation

100

μA ≤ IOUT ≤ 300 mA

0.002

%/mA

Output voltage noise

IOUT = 10 mA, 10 Hz ≤ f ≤ 100 kHz

μVRMS

Output voltage noise density

10 Hz

≤ f ≤ 100 kHz, COUT = 10 μF

190

nV/

√Hz

VIH, (VOUT + 0.5 V) ≤ VIN ≤ 6 V

(1);

for operating temperature extremes:

−40°C to 85°C

VSHDN

SHDN input threshold

VIL, (VOUT + 0.5 V) ≤ VIN ≤ 6 V

(1);

for operating temperature

0.4

extremes:

−40°C to 85°C

ISHDN

SHDN input bias current

SHDN = GND or IN

0.1

100

ISET

SET input leakage

SET = 1.3 V, ADJ version only(5)

0.1

2.5

(1)

Condition does not apply to input voltages below 2.5 V because this is the minimum input operating voltage.

(2)

All limits are verified by testing or statistical analysis.

(3)

Typical values represent the most likely parametric norm.

(4)

Dropout voltage is measured by reducing VIN until VOUT drops 100 mV from its nominal value at VIN – VOUT = 0.5 V. Dropout voltage

does not apply to the 1.8-V version.

(5)

The SET pin is not externally connected for the fixed versions.

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