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Single Output Regulators

Allegro's regulator solutions are robust, protecting against faults, and they're also efficient, minimizing power losses and saving energy. They feature high temperature operation, including a junction temperature of 150°C.

Automotive and non-automotive devices are available with a variety of package types with exposed pads for excellent thermal dissipation.

Featured Products

20-pin 4mm x 4mm QFN ES with wettable flank

A81805

40 V, 2.5 A, Synchronous Buck Regulator with Low EMI and 6 µA Quiescent Current

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A8660

A8660

Wide Input Voltage, Adjustable Output, Synchronous Buck Controller with PWM Frequency Dithering, Synchronization, and NPOR

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A4480 Product Image

A4480

Wide Input 5 V, 50 mA, Automotive Regulator with Output Short-to-Battery Protection and Power OK

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See below for our offering of buck regulators, buck/boost regulators, step down regulators, and low voltage regulators:

Documentation & Resources

Application Note

Resistor Divider Spreadsheet Provides Standard Resistor Values for Optimal Converter Output-Voltage Accuracy

AN296255 - To help designers find the best resistive voltage divider for a specific design, an Allegro calculator is presented.

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Application Note

Inductorless Buck/Boost Power Supply for Low-Power Automotive Sensor Applications

AN296247 - This article discusses the features and applications of Allegro MicroSystems’ A4480 regulator IC in automotive low-power systems specifically for sensor supply, and how the IC helps designers meet their challenging requirements.

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Application Note

Short Duty Cycles Lead to Smaller DC-DC Converters

AN295054 - This application note describes recent trends in the electronic component power management industry, in particular the innovative application of valley current mode control.

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Guide

A81805 Demo Board User Guide

The A81805 Demo Board is designed to aid system designers with evaluating the operation and performance of the A81805 and A81805-1 2.5 A synchronous buck regulators.

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Guide

ARG81800 Evaluation Board User Guide

The ARG81800 evaluation board is designed to aid system designers in evaluating the operation and performance of the ARG81800 synchronous buck regulator.

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