TLVH431A-Q1

TLVH431B-Q1

www.ti.com

SLVS906B

– DECEMBER 2008 – REVISED MARCH 2011

LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS

Check for Samples: TLVH431A-Q1, TLVH431B-Q1

1

FEATURES

•

Qualified for Automotive Applications

•

Low-Voltage Operation: Down to 1.24 V

•

Reference Voltage Tolerances at 25

°C

– 0.5% for B Grade

– 1% for A Grade

•

•

Wide Operating Cathode Current Range:

100

μA to 70 mA

•

0.25-

Ω Typical Output Impedance

•

–40°C to 125°C Specifications

DESCRIPTION/ORDERING INFORMATION

The TLVH431 devices are low-voltage 3-terminal adjustable voltage references, with thermal stability specified

with two external resistors (see Figure 2). These devices operate from a lower voltage (1.24 V) than the widely

used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLVH431 devices are ideal voltage reference in isolated feedback circuits

for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25

Ω. Active output

circuitry provides a very sharp turn-on characteristic, making the TLVH431 an excellent replacement for

low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

ORDERABLE PART NUMBER

TOP-SIDE MARKING

TOLERANCE

0.5%

SOT-23-5

– DBV

Reel of 3000

TLVH431BQDBVRQ1

VOPQ

–40°C to 125°C

0.5%

SOT-23-3 - DBZ

Reel of 3000

TLVH431BQDBZRQ1

VPIQ

1%

SOT-23-5

– DBV

Reel of 3000

TLVH431AQDBVRQ1

VOOQ

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2008–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.