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LP3875-ADJ

SNVS247E – SEPTEMBER 2003 – REVISED AUGUST 2016

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Copyright © 2003–2016, Texas Instruments Incorporated

Electrical Characteristics (continued)

Unless otherwise specified: TJ = 25°C, VIN = VO(NOM) + 1 V, IL = 10 mA, COUT = 10 µF, VSD = 2 V.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

SHUTDOWN INPUT

VSDT

Shutdown threshold

Output = high

VIN

V

Output = high, –40°C

≤ TJ ≤ 125°C

2

Output = low

0

Output = low, –40°C

≤ TJ ≤ 125°C

0.3

Td(OFF)

Turnoff delay

IL = 1.5 A

20

µs

Td(ON)

Turnon delay

IL = 1.5 A

25

µs

ISD

SD input current

VSD = VIN

1

nA

AC PARAMETERS

PSRR

Ripple rejection

VIN = VOUT + 1 V, COUT = 10 µF

VOUT = 3.3 V, ƒ = 120 Hz

73

dB

VIN = VOUT + 0.5 V, COUT = 10 µF

VOUT = 3.3 V, ƒ = 120 Hz

57

ρn(l/f)

Output noise density

f = 120 Hz

0.8

µV

en

Output noise voltage

BW = 10 Hz – 100 kHz, VOUT = 2.5 V

150

µVRMS

BW = 300 Hz – 300 kH, VOUT = 2.5 V

100