TLV431B-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: -40°C to 125°C ambient operating temperature range
- Low-voltage operation, VREF = 1.24V
- Adjustable output voltage, VO = VREF to 6V
- Reference voltage tolerances at 25°C
- 0.5% for TLV431B
- 1% for TLV431A
- Typical temperature drift
- 11mV (–40°C to 125°C)
- Low operational cathode current, 80µA typical
- 0.25Ω Typical output impedance
- See TLVH431 and TLVH432 for:
- Wider VKA (1.24V to 18V) and IK (80mA)
- Multiple pinouts for SOT-23-3 and SOT-89 packages
The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to 1.24V on stand alone mode or any value between VREF (1.24V) and 6V with two external resistors (see Figure 6-2). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLV431 device is a voltage reference in isolated feedback circuits designed for 3V to 3.3V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | TLV431x-Q1 Low-Voltage Adjustable Precision Shunt Regulator datasheet (Rev. B) | PDF | HTML | 19 Jul 2024 |
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | ||
Application brief | Automotive LED Lighting with Adjustable Shunt References | 17 Jul 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
TLV431 Family TINA-TI AC Reference Design
TLV431 Family TINA-TI Transient Reference Design
TLV431 Family TINA-TI Transient and AC Spice Model
TLV431 Family Unencrypted PSpice Transient and AC Model (Rev. A)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TIDA-01629 — 48V/500W Three-phase Inverter with Smart Gate Driver Reference Design for Servo Drives
TIDA-01527 — Discrete Resolver Front-End Reference Design With C2000™ Microcontroller and ±0.1° Accuracy
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SOT-23 (DBV) | 5 | Ultra Librarian |
SOT-23 (DBZ) | 3 | Ultra Librarian |
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