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MIC5504-1.8YM5-TR

MCHPMIC5504-1.8YM5-TR

Microchip Technology
Linear Voltage Regulator IC Positive Fixed 1 Output 300mA SOT-23-5
Active89,873 in stock
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Overview

The MIC5504-1.8YM5-TR is a compact, low-quiescent current LDO regulator designed to provide a fixed 1.8V output at up to 300mA. It operates from an input voltage range of 2.5V to 5.5V, making it ideal for regulation from single-cell Li-ion batteries or 5V rails. This regulator includes an enable pin with an internal pull-down and an auto-discharge feature to ensure the output is quickly pulled to ground when the device is disabled.

Why Choose This Part

The MIC5504 offers high 60dB PSRR at 1kHz, which is effective at filtering out noise from switching converters. Its tiny SOT-23-5 footprint and integrated auto-discharge circuit reduce the need for external components, while internal thermal shutdown and current limit protection improve system reliability. The low quiescent current of 38uA helps maintain high efficiency in standby and low-load conditions.

Applications

Portable Electronics
Providing clean 1.8V logic rails for processors and memory in handheld devices like DSCs and GPS units.
Mobile Devices
Regulating power for low-voltage peripherals in smartphones and PDAs where space is at a premium.
Battery-Powered Instrumentation
Extending battery life in medical devices and portable sensors thanks to its low 38uA operating current.
IoT End Nodes
Supplying power to 1.8V microcontrollers and radio modules that require stable voltage with thermal and current protection.

Key Specifications

PSRR 60dB (1kHz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Control Features Enable
Current - Output 300mA
Protection Features Over Current, Over Temperature
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC
Voltage - Input (Max) 5.5V
Voltage Dropout (Max) 0.38V @ 300mA
Current - Supply (Max) 65 uA
Supplier Device Package SOT-23-5
Current - Quiescent (Iq) 55 uA
Voltage - Output (Min/Fixed) 1.8V

Getting Started

To use this part, place a 1uF ceramic capacitor close to the input and output pins for stability. Ensure the Enable pin is driven high to activate the output, or let the internal pull-down keep it off during startup. For thermal management, calculate the power dissipation based on the voltage drop (Vin - 1.8V) multiplied by the load current to ensure it stays within the -40 to +125 degrees Celsius operating range.

Also Consider

MCP1700 MCHPMicrochip Technology - An ultra-low quiescent current alternative (1.6uA) for battery applications that can tolerate a lower 250mA maximum current.
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