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ULVH431 - LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR

Description

The UTC ULVH431 is a low-voltage 3-terminal programmable shunt regulator with guaranteed thermal stability over full applicable industrial and commercial temperature ranges.

Features

  • 3 2 1 SOT-23-3 (JEDEC TO-236) 1 1 SOT-89.
  • Adjustable output voltage, VO=VREF to 18 V.
  • Low-Voltage operation: VREF= 1.24 V.
  • Wide operating cathode current range: 100µA to 50mA.
  • Reference voltage tolerances at 25°C.
  • 0.25-Ω typical output impedance.
  • -40°C ~ 125°C specifications.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD ULVH431 LINEAR INTEGRATED CIRCUIT LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR 4 5 123 SOT-23-5 (JEDEC TO-236) 4 5 123 SOT-25 (JEDEC MO-178)  DESCRIPTION The UTC ULVH431 is a low-voltage 3-terminal programmable shunt regulator with guaranteed thermal stability over full applicable industrial and commercial temperature ranges. The output voltage of UTC ULVH431 can be set to any value between VREF (1.24V) and the corresponding maximum cathode voltage (18V) with two external resistors. The UTC ULVH431 is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies when it is used with an opto-coupler. It has a typical output impedance of 0.25Ω.
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