5

REF1925, REF1930, REF1933, REF1941

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SBOS697A – SEPTEMBER 2014 – REVISED JANUARY 2017

Product Folder Links: REF1925 REF1930 REF1933 REF1941

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Copyright © 2014–2017, Texas Instruments Incorporated

(1)

Temperature drift is specified according to the box method. See the Feature Description section for more details.

(2)

The VREF and VBIAS tracking over temperature specification is explained in more detail in the Feature Description section.

(3)

The peak-to-peak noise measurement procedure is explained in more detail in the Noise Performance section.

(4)

The thermal hysteresis measurement procedure is explained in more detail in the Thermal Hysteresis section.

7.5

Electrical Characteristics

At TA = 25°C, IL = 0 mA, and VIN = 5 V, unless otherwise noted. Both VREF and VBIAS have the same specifications.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ACCURACY AND DRIFT

Output voltage accuracy

–0.1%

0.1%

Output voltage temperature coefficient(1)

–40°C

≤ TA ≤ 125°C

±10

±25

ppm/°C

VREF and VBIAS tracking over temperature

(2)

–40°C

≤ TA ≤ 85°C

±1.5

±6

ppm/°C

–40°C

≤ TA ≤ 125°C

±2

±7

LINE AND LOAD REGULATION

ΔVO(ΔVI)

Line regulation

VREF + 0.02 V ≤ VIN ≤ 5.5 V

3

35

ppm/V

ΔVO(ΔIL)

Load regulation

Sourcing

0 mA

≤ IL ≤ 20 mA ,

VREF + 0.6 V ≤ VIN ≤ 5.5 V

8

20

ppm/mA

Sinking

0 mA

≤ IL ≤ –20 mA,

VREF + 0.02 V ≤ VIN ≤ 5.5 V

8

20

POWER SUPPLY

ICC

Supply current

Active mode

360

430

µA

–40°C

≤ TA ≤ 125°C

460

Shutdown mode

3.3

5

–40°C

≤ TA ≤ 125°C

9

Enable voltage

Device in shutdown mode (EN = 0)

0

0.7

V

Device in active mode (EN = 1)

VIN – 0.7

VIN

Dropout voltage

10

20

mV

IL = 20 mA

600

ISC

Short-circuit current

50

mA

ton

Turn-on time

0.1% settling, CL = 1 µF

500

µs

NOISE

Low-frequency noise(3)

0.1 Hz

≤ f ≤ 10 Hz

12

ppmPP

Output voltage noise density

f = 100 Hz

0.25

ppm/

√Hz

CAPACITIVE LOAD

Stable output capacitor range

0

10

µF

HYSTERESIS AND LONG-TERM STABILITY

Long-term stability

0 to 1000 hours

60

ppm

Output voltage hysteresis(4)

25°C, –40°C, 125°C, 25°C

Cycle 1

60

ppm

Cycle 2

35