TEXAS INSTRUMENTS TLVH431, TLVH431A, TLVH431B TLVH432, TLVH432A, TLVH432B LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS Product Data Sheet Manual
Summary
Discover a reliable solution for precision voltage reference needs with these low-voltage adjustable shunt regulators. Designed to maintain stable output voltages between 1.24V and 18V, they provide exceptional thermal stability crucial for power management circuits, including isolated feedback loops. These devices are ideal replacements for traditional Zener diodes in demanding applications like switching-mode power supplies. The documentation provides comprehensive technical specifications, package details (SC-70, SOT series), and ordering guidance for engineers designing dependable, adjustable power solutions.
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查询TLVH431供应商 TLVH431, TLVH431A, TLVH431B
TLVH432, TLVH432A, TLVH432B
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
www.ti.com
SLVS555F–NOVEMBER 2004–REVISED OCTOBER
FEATURES
Low-Voltage Operation Down to 1.24 Wide Operating Cathode Current Range
µA to m A•
Reference Voltage Tolerances at 25°C
0.25-Ω Typical Output Impedance–
0.5% for Grade
–40°C to 125°C Specifications–
1% for Grade
TLVH432 Provides Alternative Pinouts for–
1.5% for Standard Grade
SOT-23-3 and SOT-89 Packages•
Adjustable Output Voltage, VO VREF to
Ultra-Small SC-70 Package Offers 40%
Smaller Footprint Than SOT-23-3
TLVH431 TLVH431
DBV (SOT-23-5) PACKAGE DBZ (SOT-23-3) PACKAGE (TOP VIEW) (TOP VIEW)
NC ANODE
ANODE
CATHODE REF
CATHODE
NC - No internal connection Pin 2 must be connected to ANODE or left open.
TLVH431 TLVH431 TLVH431 DCK (SC-70) PACKAGE LP (TO-92/TO-226) PACKAGE PK (SOT-89) PACKAGE (TOP VIEW) (TOP VIEW) (TOP VIEW)
CATHODE ANODE CATHODE CATHODE
NC NC
ANODE
REF NC ANODE ANODE
REFNC - No internal connection
TLVH432 TLVH432 PK (SOT-89) PACKAGE DBZ (SOT-23-3) PACKAGE (TOP VIEW) (TOP VIEW)
CATHODE
ANODE
ANODE ANODE REF
CATHODE
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 with two external resistors (see Figure 2). These devices operate from lower
voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
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 2004–2005, 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.
Page Summary Contents For TEXAS INSTRUMENTS TLVH431, TLVH431A, TLVH431B TLVH432, TLVH432A, TLVH432B LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS Product Data Sheet Manual
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 37 |
| File Size | 550.07 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
How is the output voltage set using this reference regulator?
The adjustable output voltage, V_REF, can be set to any value between 1.24 V and 18 V using two external resistors.
Where are these regulators best suited for use?
They are ideal as voltage references in isolated feedback circuits when used with an optocoupler in 3-V to 3.3-V switching power supplies.
What is the primary benefit compared to older reference types like TL431?
The TLVH43x series operates from a significantly lower reference voltage (1.24 V) than widely used references such as the TL431 or TL1431.
Is there a functional difference between the TLVH431 and the TLVH432?
They are electrically identical, but the TLVH432 is offered with different pinouts when shipped in SOT-23-3 and SOT-89 packages.