Overview
The TLV431BQDBVRQ1 is a low-voltage 3-terminal adjustable voltage reference integrated circuit manufactured by Texas Instruments. This device is part of the TLV431B-Q1 series and is specifically designed for applications requiring high precision and stability over a wide temperature range. It operates from a lower voltage (1.24V) compared to traditional shunt-regulator references like the TL431 and TL1431, making it suitable for various power management and voltage regulation tasks. The TLV431BQDBVRQ1 is AEC-Q100 qualified, ensuring its reliability in automotive and other demanding environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (VREF) | 1.228 to 1.252 | V |
| Adjustable Output Voltage (VO) | 1.24 to 6 | V |
| Output Current (Iout) | Up to 15 | mA |
| Minimum Cathode Current for Regulation (Ik(min)) | 55 to 100 | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Dynamic Impedance (zKA) | 0.25 to 0.4 | Ω |
| Reference Voltage Tolerance at 25°C | ±0.5% (TLV431B) | % |
| Package Type | SOT-23 (DBV) | |
| Pins | 5 |
Key Features
- Qualified for automotive applications and AEC-Q100 certified with a temperature grade 1 rating (-40°C to 125°C).
- Low-voltage operation with a reference voltage of 1.24V and adjustable output voltage from 1.24V to 6V.
- High precision with a reference voltage tolerance of ±0.5% at 25°C for the TLV431B model.
- Low operational cathode current of 80µA typical and low dynamic impedance of 0.25Ω.
- Robust and compact SOT-23 package, ensuring durability and easy integration into electronic designs.
- Lead-free and RoHS-compliant, adhering to environmental and regulatory standards.
Applications
- Power supplies and voltage regulation circuits, especially in 3V to 3.3V switching-mode power supplies.
- Analog signal conditioning, voltage monitoring, and reference voltage generation in industrial, automotive, and consumer electronics.
- Battery management systems and on-board regulation.
- Isolated feedback circuits when used with an optocoupler.
Q & A
- What is the reference voltage of the TLV431BQDBVRQ1?
The reference voltage (VREF) is 1.24V, with a tolerance of ±0.5% at 25°C for the TLV431B model.
- What is the adjustable output voltage range of the TLV431BQDBVRQ1?
The output voltage can be adjusted from 1.24V to 6V using two external resistors).
- What is the operating temperature range of the TLV431BQDBVRQ1?
The device operates over a temperature range of -40°C to 125°C).
- What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is 55µA to 100µA).
- Is the TLV431BQDBVRQ1 suitable for automotive applications?
Yes, it is qualified for automotive applications and is AEC-Q100 certified).
- What is the dynamic impedance of the TLV431BQDBVRQ1?
The dynamic impedance is 0.25Ω to 0.4Ω).
- What package type does the TLV431BQDBVRQ1 come in?
The device is packaged in a 5-pin SOT-23 (DBV) package).
- Is the TLV431BQDBVRQ1 RoHS-compliant?
Yes, the device is lead-free and RoHS-compliant).
- What are some typical applications of the TLV431BQDBVRQ1?
It is used in power supplies, analog signal conditioning, voltage monitoring, and reference voltage generation in various electronic applications).
- How much output current can the TLV431BQDBVRQ1 supply?
The device can supply up to 15mA of output current).
