Datasheet > MIC24421YML

MIC24421YML

更新时间： 2024-11-08 12:03:59

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
34页	1370K
描述
2.5A Dual Output PWM Synchronous Buck Regulator IC

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MIC24421YML 数据手册

MIC24420/MIC24421

2.5A Dual Output PWM Synchronous

Buck Regulator IC

General Description

Features

The MIC24420/MIC24421 are synchronous PWM dual

output step down converters with internal 2.5A high-side

switches. The MIC24420/MIC24421 has an integrated low-

side gate driver for synchronous step-down conversion by

connecting an external N-channel MOSFET to achieve

high efficiencies in low duty-cycle applications.

• 4.5V to 15V input voltage range

• Adjustable output voltages down to 0.7V

• 2.5A per channel

• 180° out of phase operation

• Pre-biased output startup capability

• Low-side driver for synchronous operation

• 2% output voltage accuracy (over temperature)

• 500kHz (MIC24421) and 1MHz (MIC24420) switching

frequency

• Output voltage sequencing

The MIC24420 switching frequency is 1MHz and the

MIC24421 switching frequency is 500kHz. A patented

control scheme allows the use of a wide range of output

capacitance from small ceramic capacitors to large

electrolytic types with only one compensation component.

A 2% output voltage tolerance over the temperature range

allows the maximum level of system performance. The

MIC24420/MIC24421 power good signal allows full control

for sequencing the output voltages with minimum external

components.

• Programmable max current limit

• Power good output

• Ramp Control™ provides soft-start

• Low-side current sensing allows very low duty-cycle

• Works with ceramic output capacitors

• 24-pin 4mm x 4mm MLF^®package

• Junction temperature range of –40°C to +125°C

An adjustable current limit allows the use of smaller

inductors in lower current applications.

The MIC24420/MIC24421 is available in a ePad 24-pin

4mm x 4mm MLF^®package, and has an operating junction

temperature range of –40°C to +125°C.

Applications

• Multi-output power supplies with sequencing

• DSP, FPGA, CPU and ASIC power supplies

• Telecom and networking equipment, servers

_________________________________________________________________________________________________________________________

Typical Application

MIC24420 Dual Output Buck Converter

Ramp Control is a trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, 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

M9999-062012-C

June 2012

12 3 4 5 6 7...34

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与MIC24421YML相关器件

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MIC24421YML-TR	MICROCHIP	获取价格	SWITCHING REGULATOR
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MIC-25	COOPER	获取价格	Electric Fuse, Fast Blow, 25A, 32VAC, 10000A (IR), Inline/holder,
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MIC2505	MICROCHIP	获取价格	The MIC2505, MIC2505-1, MIC2505-2, and MIC2506 are single and dual integrated high-side po
MIC2505_04	MICREL	获取价格	Single 2A / Dual 1A / High-Side Switches
MIC2505-1BM	MICREL	获取价格	Single 2A / Dual 1A / High-Side Switches
MIC2505-1BM	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, SOIC-8
MIC2505-1BMT&R	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, SOIC-8
MIC2505-1BN	MICREL	获取价格	Single 2A / Dual 1A / High-Side Switches

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