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HMC976LP3E

HMC976LP3E Description

The HMC976LP3E from Analog Devices Inc. is a high-performance, low-dropout (LDO) linear voltage regulator designed for precision power management in demanding applications. This positive-adjustable regulator delivers up to 400mA of output current with an input voltage range of 1.8V to 5.5V, making it suitable for low-voltage systems. The device features a quiescent current of just 1.5mA, ensuring efficient operation in battery-powered designs. With an adjustable output voltage (up to 5V), it offers flexibility for various circuit requirements. The 70dB to 20dB PSRR (1kHz to 50MHz) ensures excellent noise rejection, critical for sensitive analog and RF applications.

HMC976LP3E Features

• Adjustable Output: Supports 1.8V to 5V output range for versatile design integration.
• High PSRR: 70dB at 1kHz, declining to 20dB at 50MHz, ideal for noise-sensitive applications.
• Low Quiescent Current: 1.5mA minimizes power waste in standby modes.
• Over-Temperature Protection: Safeguards against thermal overload.
• Enable Control: Allows for power sequencing and energy-saving modes.
• Compact 16QFN Package: Space-saving surface-mount design for high-density PCBs.
• 400mA Output Current: Sufficient for powering microcontrollers, sensors, and peripheral ICs.

HMC976LP3E Applications

The HMC976LP3E excels in applications requiring stable, low-noise power:

• Portable Electronics: Ideal for smartphones, tablets, and wearables due to its low Iq and small footprint.
• RF/Communications Systems: High PSRR ensures clean power for RF amplifiers, mixers, and transceivers.
• Industrial Sensors: Reliable voltage regulation for precision analog circuits.
• Embedded Systems: Powers microcontrollers, FPGAs, and memory modules in IoT devices.
• Medical Devices: Suitable for low-power, noise-critical diagnostic equipment.

Conclusion of HMC976LP3E

The HMC976LP3E stands out as a high-efficiency, adjustable LDO regulator with superior noise rejection and thermal protection. Its combination of low quiescent current, high PSRR, and compact form factor makes it a preferred choice for power-sensitive designs in consumer, industrial, and communication systems. Although marked as obsolete, its performance metrics remain competitive for legacy or specialized applications requiring robust voltage regulation.