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Shunt voltage references

TLVH431B-EP

ACTIVE

Enhanced-plastic 0.5% low-voltage wide-operating-current adjustable precision shunt regulator

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Data sheet

TLVH431B-EP

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 HiRel Enhanced Product Temp coeff (max) (ppm/°C) 138 Operating temperature range (°C) -55 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 HiRel Enhanced Product Temp coeff (max) (ppm/°C) 138 Operating temperature range (°C) -55 to 125 Iout/Iz (max) (mA) 80
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Low-voltage operation: down to 1.24 V
  • Reference voltage tolerances 0.5% at 25°C
  • Adjustable output voltage, VO = VREF to 18 V
  • Wide operating cathode current range:
    200 µA to 70 mA
  • 0.25-Ω typical output impedance
  • Supports defense and aerospace applications:
    • Controlled baseline
    • Available in extended (–55°C to 125°C) temperature range
    • Extended product life cycle
    • Extended product-change notification
    • Product traceability
  • Low-voltage operation: down to 1.24 V
  • Reference voltage tolerances 0.5% at 25°C
  • Adjustable output voltage, VO = VREF to 18 V
  • Wide operating cathode current range:
    200 µA to 70 mA
  • 0.25-Ω typical output impedance
  • Supports defense and aerospace applications:
    • Controlled baseline
    • Available in extended (–55°C to 125°C) temperature range
    • Extended product life cycle
    • Extended product-change notification
    • Product traceability

The TLVH431B-EP device is a low-voltage, 3-terminal, adjustable voltage reference 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 24). This device operates from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLVH431B-EP device is ideal for voltage references in isolated feedback circuits designed for 3-V to 3.3-V switching-mode power supplies. It has a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431B-EP device an excellent replacement for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

The TLVH431B-EP device is a low-voltage, 3-terminal, adjustable voltage reference 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 24). This device operates from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLVH431B-EP device is ideal for voltage references in isolated feedback circuits designed for 3-V to 3.3-V switching-mode power supplies. It has a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431B-EP device an excellent replacement for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
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* Data sheet TLVH431B-EP Enhanced Plastic 0.5% Low-Voltage Wide-Operating Current Adjustable Precision Shunt Regulator datasheet PDF | HTML 06 Dec 2019
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018

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