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Shunt voltage references

TLVH431B-Q1

ACTIVE

Automotive, low-voltage adjustable precision shunt regulator (reverse pinout)

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Data sheet

TLVH431B-Q1

ACTIVE
Data sheet Order now

Product details

VO (V) 1.24 Initial accuracy (max) (%) 0.5 VO adj (min) (V) 1.24 VO adj (max) (V) 18 Iz for regulation (min) (µA) 60 Reference voltage (V) adjustable Rating Automotive Temp coeff (max) (ppm/°C) 161 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 80
VO (V) 1.24 Initial accuracy (max) (%) 0.5 VO adj (min) (V) 1.24 VO adj (max) (V) 18 Iz for regulation (min) (µA) 60 Reference voltage (V) adjustable Rating Automotive Temp coeff (max) (ppm/°C) 161 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 80
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • 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
  • Adjustable Output Voltage, VO = VREF to 18 V
  • Wide Operating Cathode Current Range: 100 µA to 70 mA
  • 0.25- Typical Output Impedance
  • –40°C to 125°C Specifications
  • 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
  • Adjustable Output Voltage, VO = VREF to 18 V
  • Wide Operating Cathode Current Range: 100 µA to 70 mA
  • 0.25- Typical Output Impedance
  • –40°C to 125°C Specifications

The TLVH431 devices are low-voltage 3-terminal adjustable voltage references, with thermal stability specified over the automotive temperature range. 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 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 . 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.

The TLVH431 devices are low-voltage 3-terminal adjustable voltage references, with thermal stability specified over the automotive temperature range. 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 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 . 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.
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Type Title Date
* Data sheet TLVH431A-Q1, TLVH431B-Q1 Low-Voltage Adjustable Precision Shunt Regulator . datasheet (Rev. B) 28 Mar 2011
Functional safety information TLVH431B-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 22 Sep 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application brief Automotive LED Lighting with Adjustable Shunt References 17 Jul 2018

Design & development

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TLVH431 PSpice Transient Model

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Calculation tool

SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator

This tool guides the user through the design process for the TLx431 and LM40x0 family of shunt voltage references. This calculator will recommend resistance and capacitance values to optimally meet the user's desired specifications.
Supported products & hardware

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Products
Shunt voltage references
ATL431 — 2.5-V low-IQ adjustable precision shunt regulator ATL431LI — Low-IQ programmable shunt regulator offered in an ultra-small DQN package ATL431LI-Q1 — Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: KRA) ATL432 — 2.5-V precision programmable shunt regulator ATL432LI — High-bandwidth, low-IQ programmable shunt regulator (pinout: RKA) ATL432LI-Q1 — Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: RKA) LM4030 — Ultra-high-precision shunt voltage reference LM4040 — Fixed voltage, 45-µA, precision micropower shunt voltage reference LM4040-N — 100-ppm/°C precision micropower shunt voltage reference LM4040-N-Q1 — Automotive, 100-ppm/°C precision micropower shunt voltage reference LM4040C25-EP — Enhanced Product 2.5-V Precision Micropower Shunt Voltage Reference, 0.5% accuracy LM4041-N — Fixed & adjustable, 45-µA, precision micropower shunt voltage reference LM4041-N-Q1 — Automotive, precision micropower shunt voltage reference LM4041A12 — 1.2-V precision micropower shunt voltage reference with 0.1% accuracy LM4041B — Adjustable, precision micropower shunt voltage reference with 0.2% accuracy LM4041B12 — 1.2-V precision micropower shunt voltage reference with 0.2% accuracy LM4041C — Adjustable, precision micropower shunt voltage reference with 0.5% accuracy LM4041C12 — 1.2-V precision micropower shunt voltage reference with 0.5% accuracy LM4041D — Adjustable, precision micropower shunt voltage reference with 1% accuracy LM4041D12 — 1.2-V precision micropower shunt voltage reference with 1% accuracy LM4050-N — 50-ppm/°C precision micropower shunt voltage reference LM4050-N-Q1 — Automotive, 50-ppm/°C precision micropower shunt voltage reference LM4050QML-SP — Radiation-hardened QMLV, 2.5-V or 5-V shunt voltage reference LM4051-N — Fixed & adjustable, precision micropower shunt voltage reference LMV431 — 1.5%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431A — 1%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431B — 0.5%, low-voltage (1.24-V) adjustable precision shunt regulator TL431 — Adjustable precision shunt regulator TL431-Q1 — Automotive adjustable precision shunt regulator (pin layout: KRA) TL431C — 2% adjustable precision shunt regulator TL431LI — Adjustable precision shunt regulator with optimized reference current (pin layout: KRA) TL431LI-Q1 — Automotive, adjustable, precision shunt regulator with optimized reference current TL432 — Adjustable precision shunt regulator (reverse pinout) TL432-Q1 — Automotive adjustable precision shunt regulator (pin layout: RKA) TL432LI — Adjustable precision shunt regulator with optimized reference current (pin layout: RKA) TL432LI-Q1 — Automotive, adjustable, precision shunt regulator with optimized reference current TLA431 — All-capacitor stable precision programmable reference with KRA pin layout TLA432 — All-capacitor stable precision programmable reference with RKA pin layout TLV431 — 1.5% accuracy, low-voltage, adjustable precision shunt regulator TLV431A — 1% accuracy, low-voltage, adjustable precision shunt regulator TLV431A-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLV431B — 0.5% accuracy, low-voltage, adjustable precision shunt regulator TLV431B-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLVH431 — 1.5% low-voltage wide-operating current adjustable precision shunt regulator TLVH431A — 1% low-voltage wide-operating current adjustable precision shunt regulator TLVH431A-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLVH431B — 0.5% low-voltage wide-operating current adjustable precision shunt regulator TLVH431B-EP — Enhanced-plastic 0.5% low-voltage wide-operating-current adjustable precision shunt regulator TLVH431B-Q1 — Automotive, low-voltage adjustable precision shunt regulator (reverse pinout) TLVH432 — 1.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout) TLVH432A — 1% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout) TLVH432B — 0.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout)
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TLV4313 — Quad, 5.5-V, 1-MHz, low quiescent current (65-μA), RRIO operational amplifier TLV4314 — Quad, 5.5-V, 3-MHz, RRIO operational amplifier TLV4314-Q1 — Automotive-grade, quad, 5.5-V, 3-MHz, RRIO operational amplifier TLV4316 — Quad, 5.5-V, 10-MHz, RRIO operational amplifier TLV4316-Q1 — Automotive-grade, quad, 5.5-V, 10-MHz, RRIO operational amplifier TLV4379 — Quad, 5.5-V, 90-kHz, low quiescent current (4-μA), RRIO operational amplifier
Precision op amps (Vos<1mV)
TLV4333 — Quad, 350-kHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems TLV4376 — Quad 5.5-MHz, 100-µV offset, 8-nV/√Hz noise, 815-µA power, precision operational amplifiers TLV4387 — Quad, ultra-high-precision (10 μV) zero-drift (0.01 μV/°C) low-input-bias-current op amp
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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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