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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 2.2% 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：0°C ~ 70°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 TL431CDE4 is a programmable shunt regulator from Texas Instruments, functioning as a precision voltage reference. It operates within an input voltage range of 2.5V to 36V and provides an adjustable output voltage between 2.495V and 36V. The device supports a maximum cathode current of 100mA with a typical dropout voltage of 1.0V. It features a tolerance of ±2% and operates across a temperature range of -40°C to +85°C. Packaged in an 8-pin SOIC surface-mount format, it integrates a high-gain error amplifier for stable regulation.
Feature Summary
- Integrates a high-gain operational amplifier with a precise 2.5V internal reference for accurate regulation
- Offers wide operating voltage range supporting diverse power supply architectures
- Provides low dynamic output impedance to maintain stability under varying load conditions
Applications
- Precision voltage references in power supply circuits
- Programmable output control in switching regulators
- Comparator applications requiring stable threshold voltages
Procurement Notes
Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance per manufacturer standards. Confirm the package designation matches the required PCB footprint. Ensure the temperature grade aligns with the intended operational environment constraints.
Selection Notes
Select this component when a ±2% accuracy level meets circuit requirements. Consider the SOIC-8 package for surface-mount assembly compatibility. Evaluate the thermal performance against the expected ambient temperature range to ensure reliable operation within specified limits.
Part Context
This part belongs to the TL431 family of programmable shunt regulators widely used in analog and mixed-signal electronics. It serves as a cost-effective alternative to Zener diodes, offering superior temperature stability and lower dynamic impedance characteristics suitable for feedback loop compensation.
Replacement Considerations
Compatible substitutes include the TL431ACD and TL431IDR. Verify that replacement parts match the required tolerance and package dimensions to ensure direct pin-to-pin functionality without circuit modification.
