Precision adjustable (programmable) shunt reference
Product details
Parameters
Package | Pins | Size
Features
- 0.4% Initial Voltage Tolerance
- 0.2-Ω Typical Output Impedance
- Fast Turnon (500 ns)
- Sink Current Capability (1 mA to 100 mA)
- Low Reference Current (REF)
- Adjustable Output Voltage (VI(ref) to 36 V)
Description
The TL1431 device is a precision programmable reference with specified thermal stability over automotive, commercial, and military temperature ranges. The output voltage can be set to any value between VI(ref) (approximately 2.5 V) and 36 V with two external resistors. This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a sharp turnon characteristic, making the device an excellent replacement for Zener diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and switching power supplies.
The TL1431C is characterized for operation over the commercial temperature range of 0°C to 70°C. The TL1431Q is characterized for operation over the full automotive temperature range of –40°C to 125°C. The TL1431M is characterized for operation over the full military temperature range of –55°C to 125°C.
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TL1431 Precision Programmable Reference datasheet (Rev. N) | Oct. 04, 2016 |
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 | |
Selection guide | TI Components for Aerospace and Defense Guide (Rev. E) | Mar. 22, 2017 | |
Application note | Setting the shunt voltage on an adjustable shunt regulator | Sep. 01, 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.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
- (...)
Reference designs
Design files
-
download PMP2534 BOM.pdf (50KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
TO-92 (LP) | 3 | View options |
TSSOP (PW) | 8 | 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
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