TL431ACDBVRE4
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Texas Instruments TL431ACDBVRE4

Manufacturer No:
TL431ACDBVRE4
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC VREF SHUNT ADJ 1% SOT23-5
Delivery:
Payment:
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Product Introduction

Overview

The TL431ACDBVRE4 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, which are three-terminal adjustable shunt regulators known for their thermal stability across various temperature ranges, including automotive, commercial, and military environments. These devices are designed to provide a highly stable reference voltage, adjustable between approximately 2.5V and 36V using two external resistors. The TL431ACDBVRE4 is particularly useful in applications requiring precise voltage regulation and low output noise.

Key Specifications

Parameter Value Unit
Reference Voltage (Vref) 2440 to 2550 mV
Reference Voltage Tolerance at 25°C 0.5% (B grade), 1% (A grade), 2% (Standard grade) %
Adjustable Output Voltage Vref to 36V V
Operating Temperature Range −40°C to 125°C (Q grade) °C
Typical Temperature Drift 6 mV (C temp), 14 mV (I temp, Q temp) mV
Output Impedance 0.2 Ω Ω
Sink-Current Capability 1 mA to 100 mA mA
Package Type SOT-23 (DBV)
Pins 5

Key Features

  • Highly stable reference voltage with low output noise.
  • Adjustable output voltage from approximately 2.5V to 36V using two external resistors.
  • Operation from −40°C to 125°C, ensuring stability across a wide temperature range.
  • Low output impedance of 0.2 Ω.
  • Sink-current capability ranging from 1 mA to 100 mA.
  • Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
  • Available in three grades with different initial tolerances: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).

Applications

  • Rack server power supplies.
  • Industrial AC/DC power supplies.
  • AC inverter and variable frequency (VF) drives.
  • Servo drive control modules.
  • Notebook PC power adapter designs.
  • On-board regulation and adjustable power supplies.
  • Switching power supplies.

Q & A

  1. What is the TL431ACDBVRE4?

    The TL431ACDBVRE4 is a precision programmable reference voltage regulator produced by Texas Instruments.

  2. What is the adjustable output voltage range of the TL431ACDBVRE4?

    The output voltage can be adjusted between approximately 2.5V and 36V using two external resistors.

  3. What are the operating temperature ranges for the TL431ACDBVRE4?

    The device operates from −40°C to 125°C, depending on the grade (C, I, Q).

  4. What is the typical output impedance of the TL431ACDBVRE4?

    The typical output impedance is 0.2 Ω.

  5. What is the sink-current capability of the TL431ACDBVRE4?

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

  6. What are the key applications of the TL431ACDBVRE4?

    Key applications include rack server power supplies, industrial AC/DC power supplies, AC inverters, servo drive control modules, and notebook PC power adapter designs.

  7. Can the TL431ACDBVRE4 replace Zener diodes in some applications?

    Yes, the TL431ACDBVRE4 can replace Zener diodes in many applications due to its sharp turn-on characteristic and stable reference voltage.

  8. What are the different grades of the TL431ACDBVRE4 and their respective tolerances?

    The device is available in three grades: B grade (0.5% tolerance), A grade (1% tolerance), and Standard grade (2% tolerance).

  9. What is the package type of the TL431ACDBVRE4?

    The TL431ACDBVRE4 is packaged in a SOT-23 (DBV) package with 5 pins.

  10. What is the typical temperature drift of the TL431ACDBVRE4?

    The typical temperature drift is 6 mV for C temperature grade and 14 mV for I and Q temperature grades.

Product Attributes

Reference Type:Shunt
Output Type:Adjustable
Voltage - Output (Min/Fixed):2.495V
Voltage - Output (Max):36 V
Current - Output:100 mA
Tolerance:±1%
Temperature Coefficient:- 
Noise - 0.1Hz to 10Hz:- 
Noise - 10Hz to 10kHz:- 
Voltage - Input:- 
Current - Supply:- 
Current - Cathode:600 µA
Operating Temperature:0°C ~ 70°C (TA)
Mounting Type:Surface Mount
Package / Case:SC-74A, SOT-753
Supplier Device Package:SOT-23-5
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Similar Products

Part Number TL431ACDBVRE4 TL431ACDBVRG4 TL431ACDBVTE4 TL431AIDBVRE4
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Discontinued at Digi-Key Discontinued at Digi-Key Obsolete Discontinued at Digi-Key
Reference Type Shunt Shunt Shunt Shunt
Output Type Adjustable Adjustable Adjustable Adjustable
Voltage - Output (Min/Fixed) 2.495V 2.495V 2.495V 2.495V
Voltage - Output (Max) 36 V 36 V 36 V 36 V
Current - Output 100 mA 100 mA 100 mA 100 mA
Tolerance ±1% ±1% ±1% ±1%
Temperature Coefficient - - - -
Noise - 0.1Hz to 10Hz - - - -
Noise - 10Hz to 10kHz - - - -
Voltage - Input - - - -
Current - Supply - - - -
Current - Cathode 600 µA 600 µA 600 µA 700 µA
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case SC-74A, SOT-753 SC-74A, SOT-753 SC-74A, SOT-753 SC-74A, SOT-753
Supplier Device Package SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5

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