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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% 8TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube,Tube
- 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 TL1431CPW is a precision programmable shunt voltage reference manufactured by Texas Instruments. It operates within the commercial temperature range of 0°C to 70°C and utilizes an 8-pin TSSOP (PW) package. The device features an adjustable output voltage range from approximately 2.5 V to 36 V, set via two external resistors. Key electrical characteristics include a 0.4% initial voltage tolerance, a typical dynamic output impedance of 0.2 Ω, and a sink current capability spanning 1 mA to 100 mA.
Feature Summary
- Precision programmable reference with specified thermal stability over the commercial temperature range
- Adjustable output voltage settable between VI(ref) and 36 V using two external resistors
- Active output circuitry provides fast turn-on characteristic for sharp regulation transitions
Applications
- Onboard regulation systems
- Adjustable power supplies
- Switching power supplies
Procurement Notes
Verify the specific suffix 'CPW' corresponds to the TSSOP-8 package and commercial temperature grade (0°C to 70°C). Confirm RoHS compliance status and lead finish details against the latest Package Option Addendum. Ensure design compatibility with the required operating conditions and absolute maximum ratings defined in the datasheet.
Selection Notes
Select this component when a precision shunt reference is required for commercial applications. The TL1431C variant serves as a direct replacement for Zener diodes in circuits demanding higher accuracy and lower dynamic impedance. Consider the TSSOP package constraints and thermal performance relative to the application's power dissipation requirements.
Part Context
The TL1431 family includes variants tailored for different environments: the TL1431Q for automotive (-40°C to 125°C), the TL1431M for military (-55°C to 125°C), and the TL1431C for commercial use. The CPW designation specifically identifies the commercial grade unit housed in the PW (TSSOP) surface-mount package.
Replacement Considerations
TL1431CDR
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 1 mA at 25°C.
How is the output voltage adjusted?
The output voltage is set to any value between VI(ref) and 36 V using two external resistors connected to the REF pin.
