LDK120PU-R Adjustable Linear Voltage Regulator IC - 200mA Output, 6-DFN Package

LDK120PU-R Adjustable Linear Voltage Regulator IC

STMicroelectronics' LDK120PU-R represents a cutting-edge solution in precision voltage regulation technology, designed to meet the demanding requirements of modern electronic systems. This adjustable linear regulator delivers exceptional performance in a compact 6-DFN package, making it ideal for space-constrained applications requiring reliable power management. With its advanced features and robust design, this IC establishes a new benchmark for efficiency and stability in voltage regulation.

Key Technical Specifications

The LDK120PU-R demonstrates impressive technical capabilities across multiple performance metrics. Its adjustable output voltage range from 0.8V to 5.2V provides exceptional design flexibility, while maintaining a maximum dropout voltage of only 0.3V at 200mA load current. This low dropout characteristic ensures optimal efficiency even under varying input conditions. The device maintains stable operation across a wide input voltage range up to 5.5V, making it suitable for both battery-powered and fixed-voltage supply applications.

Advanced Protection Features

Engineered with comprehensive protection mechanisms, the LDK120PU-R ensures reliable operation in challenging environments. Integrated over-temperature and over-current protection circuits safeguard against potential damage from abnormal operating conditions. The device's thermal shutdown feature automatically reduces current consumption when temperature thresholds are exceeded, preventing potential damage while maintaining system stability.

The regulator's enable control function provides designers with additional power management capabilities, allowing precise control over device operation states. This feature proves particularly valuable in applications requiring dynamic power optimization and system-level energy conservation strategies.

Design and Integration

Housed in a 6-XFDFN surface-mount package measuring just 1.2x1.3mm, the LDK120PU-R combines miniaturization with excellent thermal performance. Its compact footprint makes it particularly suitable for modern electronics where board space conservation is critical. The device's low quiescent current (60 µA typical) and minimal external component requirements simplify design implementation while reducing overall system cost.

With its exceptional line and load regulation characteristics, this regulator maintains stable output voltage under varying operating conditions. The 55dB power supply rejection ratio (PSRR) across frequencies from 120Hz to 10kHz ensures effective noise suppression, delivering clean power to sensitive downstream circuitry.

Applications and Use Cases

The LDK120PU-R's versatile performance profile makes it suitable for a wide range of applications across multiple industries. Its combination of adjustable output, low dropout voltage, and compact packaging makes it ideal for:

• Portable electronic devices
• Wireless communication modules
• Industrial control systems
• Consumer electronics power supplies
• Battery management systems

Designers appreciate its ability to maintain regulation accuracy under varying load conditions, making it particularly valuable in applications with dynamic power requirements. The device's wide operating temperature range (-40°C to 125°C) ensures reliable performance in both commercial and industrial environments.

Performance Advantages

The LDK120PU-R distinguishes itself through several key performance advantages. Its low dropout voltage enables efficient operation even with minimal headroom between input and output voltages. The device's high PSRR specification ensures superior noise rejection, maintaining signal integrity in noise-sensitive applications.

With only 100 µA maximum supply current, the regulator maintains excellent efficiency while delivering its full 200mA output capability. This combination of high output current and low quiescent current makes it particularly suitable for power-sensitive applications requiring both performance and efficiency.

Tags: linear voltage regulator, adjustable power supply, low dropout IC, surface mount regulator, STM semiconductor