Datasheet > MIC23451

MIC23451

更新时间： 2024-11-06 01:17:55

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
20页	3210K
描述
3MHz, 2A Triple Synchronous Buck Regulator

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MIC23451 数据手册

MIC23451

3MHz, 2A Triple Synchronous

Buck Regulator with

HyperLight Load^®and Power Good

General Description

Features

The MIC23451 is a high-efficiency, 3MHz, triple 2A,

synchronous buck regulator with HyperLight Load^®mode.

HyperLight Load provides very-high efficiency at light

loads and ultra-fast transient response, which is ideal for

supplying processor core voltages. An additional benefit of

this proprietary architecture is very low output ripple

voltage throughout the entire load range with the use of

small output capacitors. The 4mm x 4mm QFN package

saves board space and requires only five external

components for each channel.

• 2.7V to 5.5V input voltage

• Three independent 2A outputs

• Up to 93% peak efficiency

• 81% typical efficiency at 1mA

• Three independent power good indicators

• 24µA typical quiescent current (per channel)

• 3MHz PWM operation in continuous mode

• Ultra-fast transient response

• Low voltage output ripple

The MIC23451 is designed for use with a very small

inductor, down to 0.47µH, and an output capacitor as small

as 2.2µF that enables a total solution size that is less than

1mm height.

− 30mV_PPripple in HyperLight Load mode

− 5mV output voltage ripple in full PWM mode

• Fully integrated MOSFET switches

• 0.1µA shutdown current (per channel)

• Thermal-shutdown and current-limit protection

• Output voltage as low as 1V

The MIC23451 has a very-low quiescent current of 24µA

each channel and achieves as high as 81% efficiency at

1mA. At higher loads, the MIC23451 provides a constant

switching frequency around 3MHz while achieving peak

efficiencies up to 93%.

• 26-pin 4mm × 4mm QFN

• –40°C to +125°C junction temperature range

The MIC23451 is available in a 26-pin 4mm x 4mm QFN

package with an operating junction temperature range

from –40°C to +125°C.

Applications

• Solid state drives (SSD)

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

• µC/µP, FPGA, and DSP power

• Test and measurement systems

• Set-top boxes and DTV

• High-performance servers

• Security/surveillance cameras

• 5V POL applications

Typical Application

HyperLight Load is a registered trademark 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

Revision 1.2

November 5, 2013

12 3 4 5 6 7...20

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与MIC23451相关器件

型号	品牌	获取价格	描述	数据表
MIC23451-AAAYFL	MICREL	获取价格	3MHz, 2A Triple Synchronous Buck Regulator
MIC23451-AAAYFL-TR	MICROCHIP	获取价格	SWITCHING REGULATOR
MIC-2353	ADVANTECH	获取价格	Half-size Celeron? M 600 CPU Module
MIC-2353F	ADVANTECH	获取价格	Half-size Celeron? M 600 CPU Module
MIC2358	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC2358_11	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC2358YLQ	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC2358YLQYLQ	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC23603	MICREL	获取价格	4MHz PWM 6A Buck Regulator
MIC23603YML	MICREL	获取价格	4MHz PWM 6A Buck Regulator

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