6.8 Electrical Characteristics REF54450

Typical specifications at TA = 25°C, min-max specifications verified across temperature range, IL = 0mA, CIN = 0.1µF, CREF =

10µF, CNR = Open, VIN = VREF + VDO, unless otherwise noted (1)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

ACCURACY AND DRIFT

Output voltage accuracy TA = 25°C

–0.02

0.02

%

Output voltage

temperature coefficient

Q grade; –40°C ≤ TA ≤ 125°C

1.5

ppm/°C

LINE AND LOAD REGULATION

ΔVR / ΔVIN Line regulation

VREF + VDO ≤ VIN ≤ 10V

4

30

ppm/V

VREF + VDO ≤ VIN ≤ 18V, –40°C ≤ TA ≤ 125°C

1

10

ΔVR / ΔIL

Load regulation

IL = 0mA to 10mA, VIN = VREF + VDO, –40°C ≤

TA ≤ 125°C

5

30

ppm/mA

IL = 0mA to –10mA, VIN = VREF + VDO, –40°C ≤

TA ≤ 125°C

5

40

NOISE

enp-p

Low frequency noise

ƒ = 0.1Hz to 10Hz

0.45

ppmp-p

enp-p

Low frequency noise

ƒ = 0.1Hz to 10Hz, CNR = 10µF

0.24

ƒ = 0.1Hz to 10Hz, CNR = 100µF

0.11

en

Output voltage noise

ƒ = 10Hz to 1kHz

0.7

ppmrms

en

ƒ = 10Hz to 1kHz, CNR = 1µF

0.16

ppmrms

HYSTERESIS AND LONG-TERM STABILITY

ΔVREF_LTD Long-term stability

250h TA = 35°C

14

ppm

1000h TA = 35°C

25

ΔVREF_HYS

Output voltage

hysteresis

25°C, 0°C, 70°C, 25°C (cycle 1)

15

ppm

25°C, 0°C, 70°C, 25°C (cycle 2)

0.8

TURN ON TIME

tON

Turn-on time

0.1% settling, CREF = 1µF

0.63

ms

CAPACITIVE LOAD

CIN

Stable input capacitor

range

–40°C ≤ TA ≤ 125°C

0.1

µF

CREF

Stable output capacitor

range (2)

–40°C ≤ TA ≤ 125°C

1

100

µF

POWER SUPPLY

VIN

Input voltage

VREF + VDO

18

V

IQ

Quiescent current

TA = 25°C

Active mode

260

310

µA

–40°C ≤ TA ≤ 125°C

420

µA

TA = 25°C

Shutdown mode

0.25

0.7

uA

–40°C ≤ TA ≤ 125°C

1

uA

VEN

Enable pin voltage

Active mode (EN = 1)

1.6

V

Shutdown mode (EN = 0)

0.5

V

IEN

Enable pin current

VIN = VEN = 18V

0.25

0.7

uA

VIN = VEN = 18V, –40°C ≤ TA ≤ 125°C

1.2

uA

VDO

Dropout voltage

IL = 5mA, –40°C ≤ TA ≤ 125°C

250

mV

IL = 10mA, –40°C ≤ TA ≤ 125°C

400

mV

ISC

Short circuit current

VREF = 0V

21

mA

(1)

REF54450 device is in preview state. All specifications are preliminary and subject to change before production release.

(2)

ESR for the capacitor can range from 10mΩ to 1Ω.

REF54

SNVSCN7D – NOVEMBER 2023 – REVISED JUNE 2026

www.ti.com

12

Submit Document Feedback

Copyright © 2026 Texas Instruments Incorporated

Product Folder Links: REF54