NXP Semiconductors Distributor

TL431 and TLVH431 Shunt Regulators


NXP’s TL431 and TLVH431 are the product of choice for precision shunt regulators


NXP's TL431 and TLVH431 Shunt RegulatorsAs part of NXP’s proven portfolio of precision shunt regulators, these adjustable voltage references are an ideal choice for power management and other applications. They use a reference voltage of 2.495 V, respectively 1.24 V, are housed in SOT23 and SOT753 packages, and are available in several versions, making it easy to find the right part for any design.

Designers can select from standard-grade devices with 2%, respectively 1.5% tolerance, as well as 1% A-Grade and 0.5% B-Grade, respectively 0.75% D-Grade (TLVH431) devices. The standard operating-temperature range is -40°C to 125°C. Other options include normal or mirrored pinning in the 3-pin SOT23 package option, and a choice of 0°C to 70°C, or -40°C to 85°C temperature ranges. Designers can also select a 5-pin SOT753 package option for TLVH431 in each tolerance. TLVH431 regulators can sink up to 70 mA yet have minimum cathode current of 55 μA, which helps to maximize energy efficiency. In addition, for both families active output circuitry provides a very sharp turn-on characteristic, allowing the devices to replace Zener diodes in applications such as on-board regulation, adjustable power supplies and switched-mode power supplies. TL431 Datasheet | TLVH431 Datasheet

Features Applications
  • Simple solution to achieve a stabilized voltage
  • Enables regulated voltage down to 1.24 V (TLVH431)
  • Vmax up to 36 V (TL431)
  • Available with voltage accuracy down to 0.5%
  • Full temperature range from -40°C to 125°C
  • Very low temperature drift: 4 mV for TLVH431
  • High quality level according to AEC-Q100 (grade1)
  • Precision voltage reference
  • Shunt voltage regulators
  • Precision current limiters
  • Precision constant current sinks
  • Isolated feedback loop for Switch Mode Power Supplies (SMPS)

TL431
Digi-Key P/N Manufacturer P/N Description
568-4885-2-ND TL431IDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4884-2-ND TL431QDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4886-2-ND TL431CDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4890-2-ND TL431AQDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-6561-2-ND TL431BMSDT,215 IC VREF SHUNT PREC ADJ SOT-23
568-4883-2-ND TL431SDT,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4880-2-ND TL431MSDT,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4882-2-ND TL431AMSDT,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4881-2-ND TL431ASDT,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4892-2-ND TL431ACDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-6562-2-ND TL431BSDT,215 IC VREF SHUNT PREC ADJ SOT-23
568-4889-2-ND TL431BCDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4887-2-ND TL431BQDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4888-2-ND TL431BIDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-4891-2-ND TL431AIDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-9533-2-ND TL431FDT,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-9534-2-ND TL431MFDT,215 IC VREF SHUNT PREC ADJ SOT-23-3
TLVH431
Digi-Key P/N Manufacturer P/N Description
568-10153-2-ND TLVH431AMQDBZR,215 IC VREF SHUNT PREC ADJ SOT-23-3
568-10154-2-ND TLVH431DMQDBZR,215 IC SHUNT REG PREC TO-236AB
568-10155-2-ND TLVH431DQDBZR,215 IC SHUNT REG PREC TO-236AB