STMicroelectronics L4931CD33-TR Linear Voltage Regulator IC 3.3V 250mA
- Brand: STMicroelectronics
- Product Code: L4931CD33-TR
- Availability: In Stock
$0.30
- Ex Tax: $0.30
STMicroelectronics L4931CD33-TR Linear Voltage Regulator: Precision Power Management for Demanding Applications
The STMicroelectronics L4931CD33-TR linear voltage regulator represents a pinnacle of reliability and efficiency in fixed voltage regulation technology. Engineered to deliver consistent 3.3V output at up to 250mA current, this 8-SOIC packaged IC combines advanced protection features with exceptional thermal performance. Designed for modern electronics requiring stable power solutions, this regulator excels in industrial control systems, embedded computing platforms, and precision measurement equipment.
Key Technical Advantages
Operating with a maximum input voltage of 20V, the L4931CD33-TR maintains exceptional regulation accuracy through its 0.8V dropout voltage specification at full load. This low dropout characteristic enables efficient operation in battery-powered applications where maintaining output voltage stability during declining input levels is critical. The device's 73dB PSRR at 120Hz improving to 55dB at 10kHz ensures minimal noise transmission, making it ideal for sensitive analog circuits and RF applications.
| Parameter | Specification |
|---|---|
| Output Voltage | 3.3V Fixed |
| Output Current | 250mA Max |
| Dropout Voltage | 0.8V @ 250mA |
| Operating Temperature | -40°C to 125°C |
| Package Type | 8-SOIC (3.90mm Width) |
Comprehensive Protection Architecture
Built-in safety mechanisms ensure long-term reliability in demanding environments. The integrated over-current protection circuitry prevents damage from load faults while thermal shutdown safeguards against overheating in high-temperature applications. These features make the L4931CD33-TR particularly suitable for automotive electronics, industrial automation systems, and medical devices where component failure could have critical consequences.
With its surface-mount 8-SOIC package, this regulator offers space-saving design advantages while maintaining excellent thermal dissipation characteristics. The device's quiescent current of just 1mA (6mA max) contributes to energy-efficient operation in portable equipment and low-power standby systems. Its compatibility with standard tape and reel packaging facilitates automated PCB assembly processes.
Performance Optimization Features
The L4931CD33-TR's design incorporates advanced CMOS technology to minimize power consumption while maintaining fast transient response characteristics. This enables stable operation in dynamic load conditions commonly found in digital circuits and microprocessor-based systems. The device's wide operating temperature range (-40°C to 125°C) meets automotive and industrial grade requirements, ensuring reliable performance in extreme environments.
Engineers will appreciate the regulator's ease of implementation, requiring minimal external components for stable operation. Its fixed output voltage configuration simplifies design while maintaining accuracy across varying load conditions. The 20V input voltage capability provides design flexibility for applications with fluctuating power sources.
Tags: Low Dropout Regulator, Fixed Voltage Output, Industrial Electronics, Surface Mount IC, Power Supply Management