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MIC2124YMM

更新时间： 2024-11-06 10:57:23

品牌	Logo	应用领域
麦瑞 - MICREL		开关光电二极管控制器
页数	文件大小	规格书
24页	675K
描述
Constant Frequency, Synchronous Current Mode Buck Controller

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MIC2124YMM 数据手册

MIC2124

Constant Frequency, Synchronous

Current Mode Buck Controller

Hyper Speed Control™ Family

General Description

Features

The Micrel MIC2124 is a member of the Hyper Speed

Contro™l family of DC-DC controllers. It uses an adaptive

on-time current mode control scheme and operates at a

constant frequency.

•

+3V to +18V input voltage

25A output current capability

Any Capacitor^TMstable

Zero ESR to high ESR

The MIC2124 operates over a supply range of +3V to

+18V, and is independent of the IC supply voltage V_IN. It

operates at a fixed 300kHz switching frequency and can

be used to provide up to 25A of output current. The output

voltage is adjustable down to +0.8V.

•

Output down to 0.8V with ±1% FB accuracy

Up to 94% efficiency

300kHz switching frequency

All N-Channel MOSFET design

Shutdown feature with EN/COMP

No current-sense resistor needed

Internal 4ms digital soft-start

Thermal shutdown

The MIC2124 includes an EN/COMP pin that can be

pulled low to shut down the converter. The MIC2124

optimizes performance and ensures stability with external

compensation.

Pre-bias output safe

Cycle-by-Cycle foldback current-limit protection

10-pin MSOP package

The UVLO is provided to ensure proper operation under

power-sag conditions and to make sure that the external

power MOSFET has enough voltage to work with. An

internal digital soft-start ensures reduced inrush current.

Cycle-by-cycle current limiting ensures FET protection.

–40ºC to +125ºC junction temperature range

The MIC2124 is available in a 10-pin MSOP package with

a junction temperature operating range from –40ºC to

+125ºC.

Applications

•

Printers and scanners

Graphic and video cards

PCs and servers

Microprocessor core supply

Low-voltage distributed power

Telecommunication and networking

Set-top box, gateways and router

Typical Application

12V to 3.3V Efficiency

100

V_HSD= 12V

V_IN= 5V

OUTPUT CURRENT (A)

MIC2124 Adjustable Output 300kHz Buck Converter

Hyper Speed Control and Any Capacitor are trademarks of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-060810-D

June 2010

12 3 4 5 6 7...24

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与MIC2124YMM相关器件

型号	品牌	获取价格	描述	数据表
MIC2124YMMTR	MICREL	获取价格	SWITCHING CONTROLLER, 360kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, MSOP-10
MIC2124YMM-TR	MICROCHIP	获取价格	SWITCHING CONTROLLER, 360kHz SWITCHING FREQ-MAX, PDSO10
MIC2125	MICROCHIP	获取价格	28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control
MIC2125YML	MICROCHIP	获取价格	28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control
MIC2126	MICROCHIP	获取价格	28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control
MIC2126YML	MICROCHIP	获取价格	SWITCHING CONTROLLER
MIC2127	MICROCHIP	获取价格	The MIC2127A is a constant-frequency synchronous buck controllers featuring a unique adapt
MIC2127A	MICROCHIP	获取价格	75V, Synchronous Buck Controller Featuring Adaptive On-Time Control
MIC2127AYML-T5	MICROCHIP	获取价格	75V, SYNCHRONOUS BUCK CONTROLLER
MIC2127AYML-TR	MICROCHIP	获取价格	75V SYNCHRONOUS BUCK CONTROLLER

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