Micrel MIC2178 2.5A Synchronous Buck Regulator Datasheet

This document introduces the features and characteristics of the Micrel MIC2178 2.5A synchronous buck regulator.

Brand: Micrel
Category: Power Management
Document type: Datasheet
Language: English
Pages: 16
File format: PDF
File size: 141 KB
Published: 03 August, 2012
Updated: 01 October, 2023
MD5 checksum: B083E1D37586FE8E272F7D879BE57865
PDF: Micrel MIC2178 2.5A Synchronous Buck Regulator Datasheet PDF

About this manual

The Micrel MIC2178 is a 200kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications. It operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 2.5A output current. The device supports dual-mode operation, utilizing PWM mode for loads greater than 200mA and skip mode for loads less than 200mA to maximize efficiency.

What's inside

General Description
Features
Applications
Ordering Information
Pin Configuration
Pin Description
Absolute Maximum Ratings
Electrical Characteristics
Typical Characteristics
Block Diagram

Specifications

Input Voltage Range	4.5V to 16.5V
Switching Frequency	200kHz
Operating Temperature Range	-40°C to +85°C
Package Type	20-lead Wide SOIC
Quiescent Current (PWM Mode)	1.0mA
Quiescent Current (Skip Mode)	600µA
Maximum Duty Cycle	100%

Frequently asked questions

What is the switching frequency of the MIC2178?

The switching frequency is preset to 200kHz and can be synchronized to an external clock signal of up to 300kHz.

How does the MIC2178 select its operating mode?

It operates in either PWM or skip mode, selected externally by an intelligent system based on operating conditions and efficiency requirements.

Download PDF (141 KB)