120

100

80

60

40

20

0

-60

-40

-20

0

20

40

60

100

120

80

140

Temperature ( C)

°

ADS7822

V

CC

CS

D

OUT

DCLOCK

V

REF

+In

-In

GND

+

+

5W

1 F to 10 F

m

m

1 F to

m

10 F

m

3.3V

0.1 F

m

V

IN

V+

V

S

Microcontroller

REF3133-Q1

GND

Copyright © 2016, Texas Instruments Incorporated

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

REF3112-Q1, REF3120-Q1, REF3125-Q1

REF3130-Q1, REF3133-Q1, REF3140-Q1

SBVS299 – APRIL 2017

REF31xx-Q1 15 ppm/°C Maximum, 100-µA, SOT-23 Series Voltage Reference

1

1 Features

1

•

AEC-Q100 Qualified With the Following Results:

–

–

Device HBM ESD Classification Level H1C

–

Device CDM ESD Classification Level C4A

•

High Accuracy: 0.2% Maximum

•

Excellent Specified Drift Performance:

–

20 ppm/°C (Maximum) from –40°C to +125°C

•

High Output Current: ±10 mA

•

Low Dropout: 5 mV

•

•

Low Noise: 17 µVp-p/V

•

No Output Capacitor Required

•

Available Voltage Options : 1.2 V, 2 V, 2.5 V, 3 V,

3.3 V, 4 V

•

MicroSize Package: 3-Pin SOT-23

2 Applications

•

HEV/EV Powertrain Systems

–

Automotive Battery Management Systems

–

Inverter

–

Electric Power Steering Systems

•

Advanced Driver Assistance Systems (ADAS)

–

Radar Systems

–

Night Vision Systems

–

Dynamic Spotlight

–

Front Camera

•

Infotainment MCU Attached

•

Portable, Battery-Powered Equipment

3 Description

The REF31xx-Q1 is a family of precision, low power,

low dropout, series voltage references available in the

tiny 3-pin SOT-23 package.

The

REF31xx-Q1

small

size

and

low

power

consumption (100 μA typical) make it ideal for

portable

and

battery-powered

applications.

The

REF31xx-Q1 does not require a load capacitor, but is

stable with any capacitive load and can sink or

source up to 10 mA of output current.

Unloaded, the REF31xx-Q1 can operate on supplies

down to 5 mV above the output voltage. All models

are specified for the wide temperature range of –40°C

to +125°C.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

REF3112-Q1

REF3120-Q1

REF3125-Q1

REF3130-Q1

REF3133-Q1

REF3140-Q1

SOT-23 (3)

2.92 mm × 1.30 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

SPACER

Typical Application

Quiescent Current vs Temperature