Texas Instruments

LP2985IM5X-4.0

LP2985IM5X-4.0 Description

The LP2985IM5X-4.0 is a fixed-output linear voltage regulator designed by Texas Instruments, offering a stable 4V output voltage with a maximum output current of 150mA. This regulator is housed in a compact SOT23-5 package, making it suitable for a wide range of applications where space is a critical consideration. The device is designed to operate with an input voltage range up to 16V, ensuring compatibility with various power sources. Despite its small form factor, the LP2985IM5X-4.0 delivers robust performance, featuring a low dropout voltage of 0.58V at maximum load, which is essential for maintaining efficiency in low-input voltage scenarios.

LP2985IM5X-4.0 Features

• Fixed Output Voltage: The LP2985IM5X-4.0 provides a stable 4V output, ensuring consistent power supply to connected devices.
• High Efficiency: With a low dropout voltage of 0.58V at 150mA, this regulator maintains high efficiency even under low-input voltage conditions.
• Low Quiescent Current: The regulator features a quiescent current of only 95 µA, making it ideal for battery-powered applications where minimizing power consumption is crucial.
• Protection Features: The LP2985IM5X-4.0 includes over-current, over-temperature, and short-circuit protection, safeguarding both the regulator and connected circuits from potential damage.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, providing flexibility in power management.
• High PSRR: A power supply rejection ratio (PSRR) of 45dB at 1kHz ensures that the regulator can effectively filter out noise from the input power supply, resulting in a cleaner output voltage-.
  Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the regulator is suitable for a variety of manufacturing environments without the need for special handling.
• Mounting Type: The surface-mount package type facilitates easy integration into modern PCB designs.

LP2985IM5X-4.0 Applications

The LP2985IM5X-4.0 is well-suited for a variety of applications due to its compact size, high efficiency, and robust protection features. Some specific use cases include:

• Battery-Powered Devices: The low quiescent current and high efficiency make this regulator ideal for portable devices where battery life is a key consideration.
• Consumer Electronics: The compact SOT23-5 package and high PSRR ensure that the regulator can be easily integrated into space-constrained consumer electronics while maintaining clean power delivery.
• Industrial Applications: The over-current, over-temperature, and short-circuit protection features make the LP2985IM5X-4.0 suitable for rugged industrial environments where reliability and durability are paramount.
• Medical Devices: The regulator's stable output and low noise characteristics are beneficial for sensitive medical equipment that requires precise power management.

Conclusion of LP2985IM5X-4.0

The LP2985IM5X-4.0 from Texas Instruments is a versatile and efficient linear voltage regulator designed to meet the demands of modern electronic applications. Its fixed 4V output, low dropout voltage, and low quiescent current make it an excellent choice for battery-powered and space-constrained devices. The inclusion of advanced protection features and enable control further enhance its reliability and flexibility. While the product is now obsolete, its legacy continues to influence the design of modern voltage regulators, emphasizing the importance of efficiency, stability, and robustness in power management solutions.