6.5 Electrical Characteristics REF53-Q1

At TA = 25°C, IREF = 0mA, CREF = 1µF and VIN (1) = (VREF + 0.5V), VEN = VIN unless otherwise noted

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

OUTPUT VOLTAGE

VREF

Output Voltage

REF53120

1.2

V

REF53125

1.25

REF53180

1.8

REF53205

2.048

REF53250

2.5

REF53300

3

REF53330

3.3

REF53410

4.096

REF53450

4.5

REF53500

5

Initial

Accuracy

All voltage options

–0.04

0.04

%

NOISE

enpp

Low Frequency noise

ƒ = 0.1Hz to 10Hz

3

ppmp-p

en

Output Voltage Noise

ƒ = 10Hz to 1kHz

3

ppmrms

OUTPUT VOLTAGE TEMPERATURE DRIFT

dVREF/dT

Temperature Drift

TA = –40°C to 125°C

2

4

ppm/°C

LINE REGULATION

ΔVREF(ΔVI) Line regulation

VIN = (VREF + 0.5V) to 18V,

TA = –40°C to 125°C

3

15

ppm/V

PSRR

Power Supply rejection

ratio

At 100hz

85

dB

LOAD REGULATION

ΔVREF(ΔIL)

Load regulation

Sourcing

0 < IREF < 30mA, VIN (2) = VREF + 0.75V

10

15

ppm/mA

0 < IREF < 30mA, VIN (2) = VREF + 0.75V,

TA = –40°C to 125°C

30

Load regulation Sinking

–10mA < IREF < 0, VIN (2) = VREF + 0.75V

20

30

–10mA < IREF < 0, VIN = VIN (2) = VREF + 0.75V,

TA = –40°C to 125°C

50

SHORT-CIRCUIT CURRENT

ISC

Short circuit current

VREF = 0V

40

mA

THERMAL HYSTERESIS

SOT-23-THN

Cycle 1

75

ppm

Cycle 2

9

LONG-TERM STABILITY

SOT-23-THN

0 to 1000 hours

25

ppm

1000 to 2000 hours

25

TURN-ON SETTLING TIME

Turn-on settling time

To 0.1% with CREF = 1µF

1

ms

CAPACITIVE LOAD

CIN

Stable input capacitor

range

–40°C <TA<125°C

0.1

µF

CREF

Stable output capacitor

range

–40°C <TA< 125°C

1

50

µF

POWER SUPPLY

REF53-Q1

SNVSCU8 – AUGUST 2026

www.ti.com

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