Datasheet > MIC23451

MIC23451

更新时间： 2024-09-21 14:52:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
28页	3089K
描述
The MIC23451 is a high-efficiency, 3MHz, triple 2A, synchronous buck regulator with HyperLight Loa

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MIC23451 数据手册

MIC23451

3 MHz, 2A Triple Synchronous Buck Regulator with

HyperLight Load^®and Power Good

Features

General Description

• 2.7V to 5.5V Input Voltage

The MIC23451 is a high-efficiency, 3 MHz, 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

4 mm x 4 mm FQFN package saves board space and

requires only five external components for each

channel.

• Three Independent 2A Outputs

• Up to 93% Peak Efficiency

• 81% Typical Efficiency at 1 mA

• Three Independent Power Good Indicators

• 24 µA Typical Quiescent Current (per Channel)

• 3 MHz PWM Operation in Continuous Mode

• Ultra-Fast Transient Response

• Low Voltage Output Ripple

- 30 mV_PPRipple in HyperLight Load Mode

The MIC23451 is designed for use with a very small

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

small as 2.2 µF that enables a total solution size that is

less than 1 mm height.

- 5 mV Output Voltage Ripple in Full PWM

Mode

• Fully Integrated MOSFET Switches

• 0.1 µA 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

24 µA each channel and achieves as high as 81%

efficiency at 1 mA. At higher loads, the MIC23451

provides a constant switching frequency around 3 MHz

while achieving peak efficiencies up to 93%.

• 26-Lead 4 mm × 4 mm FQFN

• –40°C to +125°C Junction Temperature Range

The MIC23451 is available in a 26-lead 4 mm x 4 mm

FQFN package with an operating junction temperature

range from –40°C to +125°C.

Applications

• Solid State Drives (SSD)

• µC/µP, FPGA, and DSP Power

• Test and Measurement Systems

• Set-Top Boxes and DTV

• High-Performance Servers

• Security/Surveillance Cameras

• 5V POL Applications

Package Type

MIC23451

26-Lead 4 mm x 4 mm FQFN (FL)

(Top View)

20 19 18 17 16 15 14

PG3

EN1

SNS1

FB1

SNS3

AGND

EP1

EP2

PGND

AVIN3

PVIN3

AGND

PVIN1

SW1

 2022 Microchip Technology Inc. and its subsidiaries

DS20006662A-page 1

12 3 4 5 6 7...28

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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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