TL431BQDBVTE4
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Texas Instruments TL431BQDBVTE4

Manufacturer No:
TL431BQDBVTE4
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC VREF SHUNT ADJ 0.5% SOT23-5
Delivery:
Payment:
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Product Introduction

Overview

The TL431BQDBVTE4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 family, known for its high precision and thermal stability over a wide range of temperatures. This device is particularly useful in applications requiring adjustable output voltages and high stability, such as on-board regulation, adjustable power supplies, and switching power supplies. The TL431BQDBVTE4 offers a programmable output voltage range from the reference voltage (approximately 2.5V) to 36V, set using two external resistors.

Key Specifications

Parameter Value
Reference Voltage Tolerance at 25°C 0.5% (B grade), 1% (A grade), 2% (Standard grade)
Adjustable Output Voltage Vref to 36V
Operating Temperature Range −40°C to 125°C (Q grade)
Typical Temperature Drift 6 mV (C temp), 14 mV (I temp, Q temp)
Output Impedance 0.2Ω (typical)
Sink-Current Capability 1 mA to 100 mA
Package Type SOT-23-5 (DBV)
AEC-Q100 Qualification Grade 1

Key Features

  • Programmable output voltage up to 36V using two external resistors.
  • Low output noise and typical output impedance of 0.2Ω.
  • Sink-current capability from 1 mA to 100 mA.
  • Enhanced stability over a wide temperature range (−40°C to 125°C for Q grade).
  • Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
  • AEC-Q100 qualified (Grade 1) for automotive applications.

Applications

  • Shunt regulator.
  • Precision current limiter.
  • Precision constant current sink.
  • Isolated feedback loop for Switch Mode Power Supplies (SMPS).
  • On-board regulation and adjustable power supplies.

Q & A

  1. What is the adjustable output voltage range of the TL431BQDBVTE4?

    The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.

  2. What are the reference voltage tolerances available for the TL431BQDBVTE4?

    The device is available in three grades with initial tolerances of 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.

  3. What is the operating temperature range for the TL431BQDBVTE4?

    The device operates from −40°C to 125°C (Q grade).

  4. What is the typical output impedance of the TL431BQDBVTE4?

    The typical output impedance is 0.2Ω.

  5. What is the sink-current capability of the TL431BQDBVTE4?

    The sink-current capability ranges from 1 mA to 100 mA.

  6. Is the TL431BQDBVTE4 AEC-Q100 qualified?
  7. What package type is the TL431BQDBVTE4 available in?

    The device is available in the SOT-23-5 (DBV) package.

  8. What are some common applications of the TL431BQDBVTE4?
  9. How does the TL431BQDBVTE4 compare to Zener diodes?

    The TL431BQDBVTE4 has active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.

  10. What is the typical temperature drift of the TL431BQDBVTE4?

    The typical temperature drift is 6 mV (C temp) and 14 mV (I temp, Q temp).

Product Attributes

Reference Type:Shunt
Output Type:Adjustable
Voltage - Output (Min/Fixed):2.495V
Voltage - Output (Max):36 V
Current - Output:100 mA
Tolerance:±0.5%
Temperature Coefficient:- 
Noise - 0.1Hz to 10Hz:- 
Noise - 10Hz to 10kHz:- 
Voltage - Input:- 
Current - Supply:- 
Current - Cathode:700 µA
Operating Temperature:-40°C ~ 125°C (TA)
Mounting Type:Surface Mount
Package / Case:SC-74A, SOT-753
Supplier Device Package:SOT-23-5
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