LP3961 datasheet(6/31 Pages) TI

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LP3961, LP3964

SNVS056J – MAY 2000 – REVISED JUNE 2015

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Electrical Characteristics (continued)

Unless otherwise specified: TJ = 25°C, VIN = VO(NOM) + 1 V, IL = 10 mA, COUT = 33 µF, VSD = VIN – 0.3 V.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

TdOFF

Turnoff delay

IL = 800 mA

µs

TdON

Turnon delay

IL = 800 mA

µs

ISD

SD input current

VSD = VIN

ERROR FLAG COMPARATOR

Threshold

See(7)

10%

See(7), –40°C

≤ TJ ≤ 125°C

16%

VTH

Threshold hysteresis

See(7)

See(7), –40°C

≤ TJ ≤ 125°C

VEF(Sat)

ERROR flag saturation

Isink = 100 µA

0.02

Isink = 100 µA

0.1

Flag reset delay

µs

Ilk

ERROR flag pin leakage current

Imax

ERROR flag pin sink current

VERROR = 0.5 V (overtemperature)

AC PARAMETERS

VIN = VOUT + 1.5 V,

COUT = 100 µF,

VOUT = 3.3 V

PSRR

Ripple rejection

VIN = VOUT + 0.3 V,

COUT = 100 µF,

VOUT = 3.3 V

ρn(l/f)

Output noise density

f = 120 Hz

0.8

µV

BW = 10 Hz to 100 kHz

150

Output noise voltage (rms)

µVRMS

BW = 300 Hz to 300 kHz

100

(7)

ERROR flag threshold and hysteresis are specified as percentage of regulated output voltage.

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