1% accuracy, low-voltage, adjustable precision shunt regulator
Product details
Parameters
Package | Pins | Size
Features
- Low-Voltage Operation, VREF = 1.24 V
- Adjustable Output Voltage, VO = VREF to 6 V
- Reference Voltage Tolerances at 25°C
- 0.5% for TLV431B
- 1% for TLV431A
- 1.5% for TLV431
- Typical Temperature Drift
- 4 mV (0°C to 70°C)
- 6 mV (–40°C to 85°C)
- 11 mV (–40°C to 125°C)
- Low Operational Cathode Current, 80 µA Typical
- 0.25-Ω Typical Output Impedance
- Ultra-Small SC-70 Package Offers 40% Smaller Footprint Than SOT-23-3
- See TLVH431 and TLVH432 for:
- Wider VKA (1.24 V to 18 V) and IK (80 mA)
- Additional SOT-89 Package
- Multiple Pinouts for SOT-23-3 and SOT-89 Packages
- On Products Compliant to MIL-PRF-38535,
All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.
All trademarks are the property of their respective owners.
Description
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 any value between VREF (1.24 V) and 6 V with two external resistors (see the Parameter Measurement Information section). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | TLV431x Low-Voltage Adjustable Precision Shunt Regulator datasheet (Rev. X) | May 01, 2018 |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 | |
| Selection guide | Voltage Reference Overview | Jul. 26, 2013 | |
| Application note | Supplying TPS61200 With a Single Solar Cell (Rev. B) | Sep. 06, 2011 |
Design & development
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Features
- Fully compatible with 60-GHz to 64-GHz mmWave sensors carrier card platform (MMWAVEICBOOST)
- Compatible with mmWave evalution modules with LaunchPad connectivity
- Integrated RJ45, transformer, and diode bridge for PoE power stage for cost-effective BOM
- 7-W isolated output from flyback converter with (...)
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Features
- TMDSCSK388: 60-mm x 44-mm DM388 processor board
- TMDSCSKCC: 90-mm x 90-mm I/O common carrier board
- Integrated WiLink 8 single-band combo 2 x 2 MIMO WiFi, Bluetooth, and Bluetooth Smart (low energy) module
- IPNC SDK with Linux 4.4 LTS kernel preloaded on included SD card enables fast application (...)
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Features
- TMS320DM368 Digital Media processor-based development board
- Parallel Camera Input compatible with Leopard Imaging LI-5M02 camera board
- Video capture of NTSC or PAL signals via component for HD and composite/S-Video for SD
- NTSC or PAL output via component for HD and composite/S-Video for SD
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Features
- DM388 digital media processor-based development board with 2Gb DDR3
- Video capture and output of NTSC or PAL signals via component I/O
- HDMI video output
- CSI2 and parallel camera input
- PCIe, SATA 2x, ethernet 2x, USB x2, audio, SD-card slot
Description
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Features
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- 2-GByte DDR3L with ECC
- TPS659118 PMIC
- Audio and Serial expansion headers
- Processor SDK Linux and TI-RTOS support
- Supports Gigabit Ethernet
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
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Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
| SOT-23 (DBV) | 5 | View options |
| SOT-23 (DBZ) | 3 | View options |
| SOT-89 (PK) | 3 | View options |
| TO-92 (LP) | 3 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
TI E2E™ forums with technical support from TI engineers
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