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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TL431IDRE4 is an adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within a cathode voltage range of 2.5V to 36V and provides an adjustable output voltage from 2.495V to 36V. The device features an initial accuracy of 2% and a temperature coefficient of 92 PPM/°C. It supports a maximum cathode current of 100 mA and functions across an operating temperature range of -40°C to +125°C. Packaged in SOIC-8 surface-mount format, it serves as a high-performance replacement for the legacy TL431AIDR.
Feature Summary
- Provides precise adjustable voltage regulation via a single external resistor divider network
- Ensures stable performance with low temperature coefficient characteristics over wide thermal ranges
- Delivers high dynamic impedance for effective noise rejection in power supply circuits
Applications
- Precision voltage references in switching power supplies
- Programmable output regulators for DC-DC converters
- Voltage monitoring and threshold detection circuits
Procurement Notes
Verify component authenticity through authorized distribution channels to ensure compliance with RoHS standards. Confirm package integrity upon receipt, as surface-mount devices are sensitive to moisture and physical damage. Cross-reference the manufacturer part number with official datasheets to validate electrical specifications before integration into production designs.
Selection Notes
Select this component when a 2% initial accuracy and extended industrial temperature range are required. The SOIC-8 package facilitates automated surface-mount assembly. Ensure circuit design accommodates the minimum cathode current requirements for proper regulation stability during light-load conditions.
Part Context
This device belongs to the TL431 family of programmable shunt regulators. It replaces older variants like the TL431AIDR while maintaining pin compatibility. The 'E4' suffix indicates lead-free construction compliant with environmental directives. It is widely utilized in general-purpose power management applications requiring reliable voltage referencing.
Replacement Considerations
Direct substitute: TL431IDR. Verify pinout compatibility and thermal performance ratings when transitioning between legacy and updated manufacturing versions.
