TLVH431BILPE3 datasheet(2/53 Pages) TI1

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TLVH431, TLVH431A, TLVH431B

TLVH432, TLVH432A, TLVH432B

SLVS555I – NOVEMBER 2004 – REVISED SEPTEMBER 2009....................................................................................................................................... www.ti.com

DESCRIPTION/ORDERING INFORMATION

The TLVH431 and TLVH432 are low-voltage 3-terminal adjustable voltage references, with specified thermal

stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value

between VREF (1.24 V) and 18 V 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 and TLVH432 are ideal voltage references 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 and TLVH432 excellent

replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable

power supplies.

The TLVH432 is identical to the TLVH431, but is offered with different pinouts for the SOT-23-3 and SOT-89

packages.

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Product Folder Link(s): TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B

TLVH431BILPE3 Datasheet(PDF) 2 Page - Texas Instruments

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