LDK220M33R 3.3V Linear Voltage Regulator 200mA SOT-23-5

LDK220M33R: High-Performance Linear Regulator for Precision Power Management

In modern electronic design, maintaining stable power supply while minimizing energy loss remains a critical challenge. The LDK220M33R from STMicroelectronics emerges as an advanced solution, combining compact SOT-23-5 packaging with reliable 3.3V fixed output regulation. This linear voltage regulator exemplifies STMicroelectronics' commitment to innovation through its exceptional thermal management capabilities and ultra-low quiescent current consumption. Designed for applications requiring precise voltage stabilization in space-constrained environments, this device establishes new benchmarks for efficiency in low-power systems.

Key Technical Advantages

Engineered with cutting-edge CMOS technology, the LDK220M33R delivers 200mA output current while maintaining just 90μA quiescent consumption. Its 0.35V dropout voltage at full load enables efficient operation even in low-headroom scenarios. The integrated enable control function provides designers with power sequencing flexibility, while comprehensive protection circuitry safeguards against over-temperature and over-current conditions. These features collectively ensure system reliability across demanding operational conditions.

Operating from a 13.2V maximum input voltage, this regulator maintains stable 3.3V output with ±2% accuracy across the -40°C to 125°C temperature range. The SOT-23-5 package combines minimal footprint with effective thermal dissipation, making it ideal for portable devices where space and heat management are critical considerations. The device's 55dB PSRR performance from 120Hz to 10kHz effectively suppresses input voltage noise, ensuring clean power delivery to sensitive analog and digital circuits.

Design Flexibility and Application Scope

The LDK220M33R's combination of features makes it particularly well-suited for battery-powered applications where efficiency and longevity are paramount. Its low quiescent current extends battery life in standby modes, while the enable function facilitates power domain control in complex systems. Typical applications include powering microcontrollers, sensors, and wireless modules in IoT devices, industrial automation equipment, and portable medical instruments.

For designers facing space constraints, the SOT-23-5 package offers significant advantages over traditional regulator solutions. The device's thermal shutdown protection and current limiting features eliminate the need for external protection components, further reducing total solution size. When combined with its high PSRR performance, these characteristics make the LDK220M33R an optimal choice for noise-sensitive applications requiring stable voltage regulation.

Tags: Linear Voltage Regulator, 3.3V Power Supply, SOT-23 Package, Low Dropout Regulator, STMicroelectronics IC