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LP38690, LP38692

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SNVS322M – DECEMBER 2004 – REVISED DECEMBER 2015

Product Folder Links: LP38690 LP38692

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Copyright © 2004–2015, Texas Instruments Incorporated

(1)

Typical numbers represent the most likely parametric norm for 25°C operation.

(2)

Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.

(3)

Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from 1 mA to

full load.

(4)

Dropout voltage is defined as the minimum input to output differential required to maintain the output within 100 mV of nominal value.

6.5 Electrical Characteristics

Unless otherwise specified: VIN = VOUT + 1 V, CIN = COUT = 10 µF, ILOAD = 10 mA, and limits are for TJ = 25°C. Minimum (MIN)

and maximum (MAX) limits are specified through testing, statistical correlation, or design.

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX

UNIT

VOUT

Output voltage tolerance

–2.5

2.5

%VOUT

100 µA < IL < 1 A

VO + 1 V ≤ VIN ≤ 10 V

−40°C ≤ TJ ≤ 125°C

–5

5

ΔVOUT/ΔVIN

Output voltage line

regulation(2)

VOUT + 0.5 V ≤ VIN ≤ 10 V

IL = 25 mA

0.03

%/A

VOUT + 0.5 V ≤ VIN ≤ 10 V

IL = 25 mA

−40°C ≤ TJ ≤ 125°C

1

ΔVOUT/ΔIL

Output voltage load

regulation(3)

1 mA < IL < 1 A

VIN = VOUT + 1 V

1.8

V

1 mA < IL < 1 A

VIN = VOUT + 1 V

−40°C ≤ TJ ≤ 125°C

5

VIN – VOUT

Dropout voltage(4)

VOUT = 1.8 V

IL = 1 A

950

mV

VOUT = 1.8 V

IL = 1 A

−40°C ≤ TJ ≤ 125°C

1600

VOUT = 2.5 V

IL = 0.1 A

80

IL = 1 A

800

VOUT = 2.5 V

−40°C ≤ TJ ≤ 125°C

IL = 0.1 A

145

IL = 1 A

1300

VOUT = 3.3 V

IL = 0.1 A

65

IL = 1 A

650

VOUT = 3.3 V

−40°C ≤ TJ ≤ 125°C

IL = 0.1 A

110

IL = 1 A

1000

VOUT = 5 V

IL = 0.1 A

45

IL = 1 A

450

VOUT = 5 V,

−40°C ≤ TJ ≤ 125°C

IL = 0.1 A

100

IL = 1 A

800

IQ

Quiescent current

VIN ≤ 10 V, IL = 100 µA to 1 A

55

µA

VIN ≤ 10 V, IL = 100 µA to 1 A

−40°C ≤ TJ ≤ 125°C

100

VEN ≤ 0.4 V (LP38692 only)

0.001

IL(MIN)

Minimum load current

VIN – VOUT ≤ 4 V

−40°C ≤ TJ ≤ 125°C

100

IFB

Foldback current limit

VIN – VOUT > 5 V

450

mA

VIN – VOUT < 4 V

1500

PSRR

Ripple rejection

VIN = VOUT + 2 V(DC), with 1V(p-p) / 120

Hz ripple

55

dB

TSD

Thermal shutdown

activation (junction temp)

160

°C

TSD (HYST)

Thermal shutdown

hysteresis (junction temp)

10

en

Output noise

VOUT = 3.3 V, BW = 10 Hz to 10 kHz

0.7

µV/

√Hz

VOUT (LEAK)

Output leakage current

VOUT = VOUT(NOM) + 1 V at 10 VIN

0.5

12

µA