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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% 8TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：8-TSSOP
- Grade：-
- Qualification：-
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Overview
The TL1431CPWR is a precision programmable shunt voltage reference manufactured by Texas Instruments, housed in an 8-pin TSSOP package. It features a typical output impedance of 0.2 Ω and supports a sink current range from 1 mA to 100 mA. The device allows adjustable output voltages between approximately 2.5 V and 36 V using two external resistors. Characterized for commercial operation within a temperature range of 0°C to 70°C, it offers fast turn-on characteristics with a typical delay of 500 ns.
Feature Summary
- Precision programmable reference with specified thermal stability over the commercial temperature range
- Active output circuitry provides sharp turn-on characteristic suitable for Zener diode replacement
- Internally compensated for stability without requiring an output capacitor between cathode and anode
Applications
- Adjustable voltage and current referencing
- Secondary side regulation in flyback switching mode power supplies (SMPS)
- Voltage monitoring circuits
- Comparator applications with integrated reference
Procurement Notes
Verify that the specific part number suffix matches the required package type and temperature grade. Confirm compliance with RoHS directives and ensure the ordering information aligns with the manufacturer's latest datasheet specifications before procurement.
Selection Notes
Select this component when a low-cost, high-precision shunt regulator is needed for commercial environments. Ensure the design accommodates the 0°C to 70°C operating range and verify that the cathode current requirements fall within the 1 mA to 100 mA operational limits for proper regulation.
Part Context
This device belongs to the TL1431 family of precision programmable references. While other variants like the TL1431Q cover automotive ranges and the TL1431M covers military ranges, the TL1431C variant specifically targets commercial applications. The 'PWR' suffix indicates the TSSOP-8 surface-mount package configuration.
Replacement Considerations
Direct replacements include the TL1431CDR and TL1431PW, which share similar electrical characteristics but differ in package style or manufacturing lot revisions.
