Texas Instruments

LP2985IM5-3.6

LP2985IM5-3.6 Description

The LP2985IM5-3.6 is a fixed-output, low-dropout (LDO) linear voltage regulator from Texas Instruments, designed to deliver a stable 3.6V output at up to 150mA of load current. With a wide input voltage range of up to 16V, this regulator is optimized for applications requiring precise voltage regulation with minimal power dissipation. The device features a low dropout voltage of 0.58V (max) at 150mA, ensuring efficient operation even with small input-output differentials. Its ultra-low quiescent current (95 µA) and enable control make it ideal for battery-powered and portable electronics. Although marked as obsolete, it remains a reliable choice for legacy designs due to its robust protection features and high performance.

LP2985IM5-3.6 Features

• Fixed 3.6V Output: Ensures stable voltage regulation for sensitive circuits.
• Low Dropout Voltage: 0.58V (max) @ 150mA minimizes power loss.
• Ultra-Low Quiescent Current: 95 µA extends battery life in portable devices.
• Wide Input Range: Supports up to 16V, accommodating various power sources.
• Enable Pin: Allows for power-saving mode when disabled.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection for enhanced reliability.
• High PSRR: 45dB @ 1kHz ensures noise suppression in noisy environments.
• Compact SOT-23-5 Package: Suitable for space-constrained PCB designs.

LP2985IM5-3.6 Applications

• Battery-Powered Devices: Ideal for handheld electronics, IoT sensors, and wearables due to low Iq.
• Industrial Control Systems: Provides stable voltage for microcontrollers and analog circuits.
• Automotive Electronics: Suitable for infotainment and low-power peripherals (within input voltage limits).
• Medical Devices: Ensures reliable power for portable diagnostic equipment.
• Legacy Designs: A dependable choice for maintaining existing systems requiring 3.6V regulation.

Conclusion of LP2985IM5-3.6

The LP2985IM5-3.6 is a high-performance LDO regulator offering a balance of efficiency, reliability, and compact design. Its low dropout, ultra-low Iq, and robust protection make it well-suited for power-sensitive and portable applications. While obsolete, its proven performance in noise-sensitive and battery-operated systems ensures continued relevance in legacy and low-power designs. Engineers seeking a stable 3.6V supply with minimal overhead should consider this regulator for its precision and durability.