Overview
The TL431ACLPR is a precision adjustable shunt regulator designed for accurate voltage reference and regulation in power supply circuits.
It is widely used in linear regulators, voltage reference circuits, and power supply feedback networks, where stable reference voltage, low temperature drift, and tight tolerance are required.
The TL431ACLP is the base precision version, while the TL431ACLPM variant offers a modified package or manufacturing option, providing flexibility for different assembly and design requirements.
Core Parameters
| Parameter | Specification |
|---|---|
| Device Type | Precision Adjustable Shunt Regulator |
| Reference Voltage | 2.495 V (typical) |
| Reference Accuracy | ±0.5% to ±1% |
| Operating Voltage | 2.5 V to 36 V |
| Output Current | Up to 100 mA |
| Temperature Range | –40°C to +125°C |
| Package | SOT-23 (ACLPR/ACLPM) |
| Temperature Coefficient | Low |
| Stability | High |
These parameters make the device suitable for power reference and regulation circuits, especially where tight voltage tolerance and stability over temperature are critical.
Features
- Precision 2.495 V reference voltage
- Adjustable output with external resistors
- Low temperature coefficient
- Wide operating voltage range
- High output current capability (up to 100 mA)
- Available in ACLP and ACLPM package variants
Typical Application Scenarios
- Post-regulation in LDO and DC/DC converters
- Feedback and reference element in linear regulators
- Precision voltage reference for ADCs and DACs
- Battery charger and power management circuits
- Adjustable power supplies
The PM8834TR LDO is often paired with the TL431ACLP precision adjustable shunt regulator in power supply designs. The TL431ACLP provides accurate voltage reference and feedback control, improving output stability and regulation performance in low-noise linear regulators and post-regulation circuits.
Performance Comparison
| Feature | TL431ACLPR | General Zener Diode | Precision Reference IC |
|---|---|---|---|
| Voltage Accuracy | Very High | Low | High |
| Temperature Stability | High | Poor | High |
| Adjustable Output | Yes | No | Some |
| Noise Performance | Low | High | Low |
| Ease of Use | Easy | Easy | Moderate |
Compared with general Zener diodes, the TL431ACLPR offers much tighter voltage accuracy and lower temperature drift. Versus dedicated precision reference ICs, it provides adjustable operation and higher output current capability at competitive cost.
Conclusion
The TL431ACLPR adjustable shunt regulator is a dependable solution for power supply reference and regulation needs. With its precision voltage reference, adjustable configuration, and high stability over temperature, it is widely used in feedback control loops and post-regulation stages. Variants such as TL431ACLP and TL431ACLPM provide packaging and tolerance options to suit various design constraints and manufacturing processes.
Manufacturer Profile
Texas Instruments (TI) is a global leader in analog and power management semiconductors, providing a wide range of precision reference, regulator, and power IC solutions. TI devices are renowned for long-term reliability, robust performance, and broad application support across consumer, industrial, and automotive markets.
FAQ
Q1: What is the reference voltage of the TL431ACLPR?
The TL431ACLPR typically provides a reference voltage of 2.495 V, suitable for precision regulation and reference applications.
Q2: Can the TL431ACLPR be used in adjustable power supplies?
Yes. With external resistors, the TL431ACLPR can be configured for adjustable reference and regulation in power supply circuits.
Q3: What is the difference between TL431ACLP and TL431ACLPM?
Both share the same electrical specifications. The difference lies in package variant or manufacturing option, offering alternative assembly formats.
Q4: How can the quality of the TL431ACLPR be verified?
7SEtronic follows a complete standardized inspection SOP, including label verification, visual inspection, and X-RAY analysis, providing you with reliable quality assurance reference.
For more information and to review our available inventory, please contact our team for detailed pricing, current stock levels, and any additional technical support you may need.
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