Datasheet > 7447789004

7447789004

更新时间： 2024-11-15 12:53:19

品牌	Logo	应用领域
美国微芯 - MICROCHIP		稳压器电感器测试功率感应器光电二极管 PC
页数	文件大小	规格书
34页	1064K
描述
24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication

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7447789004 数据手册

MCP16321/2

24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator

with Power Good Indication

Features

Description

• Up to 95% Typical Efficiency

• Input Voltage Range: 6.0V to 24V

• 1A Output Current (MCP16321)

• 2A Output Current (MCP16322)

The MCP16321/2 is a highly integrated, high-efficiency,

fixed frequency, synchronous step-down DC-DC

converter in a 16-pin QFN package that operates from

input voltages up to 24V. Integrated features include a

high-side and low-side N-Channel switch, fixed

frequency Peak Current Mode Control, internal

compensation, peak current limit, V_OUTovervoltage

protection and overtemperature protection. Minimal

external components are necessary to develop a

complete synchronous step-down DC-DC converter

power supply.

• Fixed Output Voltages: 0.9V, 1.5V, 1.8V, 2.5V,

3.3V, 5V with 2% Output Voltage Accuracy

• Adjustable Version Output Voltage Range:

0.9V to 5V with 1.5% Reference Voltage Accuracy

• Integrated N-Channel High-Side Switch: 180 mΩ

• Integrated N-Channel Low-Side Switch: 120 mΩ

• 1 MHz Fixed Frequency

High converter efficiency is achieved by integrating a

high-speed, current limited, low resistance, high-side

N-Channel MOSFET, as well as a high-speed, low

resistance, low-side N-Channel MOSFET and

associated drive circuitry. High switching frequency

minimizes the size of the inductor and output capacitor,

resulting in a small solution size.

• Low Device Shutdown Current

• Peak Current Mode Control

• Internal Compensation

• Stable with Ceramic Capacitors

• Internal Soft-Start

• Cycle-by-Cycle Peak Current Limit

• Undervoltage Lockout (UVLO): 5.75V

• Overtemperature Protection

The MCP16321/2 device can supply 1A/2A of

continuous current while regulating the output voltage

from 0.9V to 5V. A high-performance peak current

mode architecture keeps the output voltage tightly

regulated, even during input voltage steps and output

current transient conditions that are common in power

supplies.

• V_OUTOvervoltage Protection

• V_OUTVoltage Supervisor Reported at the PG Pin

• Available Package: QFN-16 (3x3 mm)

The regulator can be turned on and off with a logic level

signal applied to the EN input. The EN input is internally

pulled up to a 4.2V reference and is rated for a

maximum of 6V. With EN low, typically 5 µA of current

is consumed from the input, making the part ideal for

power shedding and load distribution applications. The

PG output is an open drain output pin used to interface

with other components of the system, and can be

pulled up to a maximum of 6V.

Applications

• PIC^®/dsPIC^®Microcontroller Bias Supply

• 12V Industrial Input DC-DC Conversion

• Set-Top Boxes

• DSL Cable Modems

• Automotive

• Wall Cube Regulation

• SLA Battery Powered Devices

• AC-DC Digital Control Power Source

• Power Meters

The output voltage can either be fixed at output

voltages of 0.9V, 1.5V, 1.8V, 2.5V, 3.3V, 5V or

adjustable using an external resistor divider. The

MCP16321/2 is offered in a 3x3 QFN-16 surface mount

package.

• Consumer

• Medical and Health Care

• Distributed Power Supplies

DS22285A-page 1

12 3 4 5 6 7...34

中文翻译

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7447789122	WURTH	获取价格	POWER-CHOKE WE-PD
7447789127	WURTH	获取价格	POWER-CHOKE WE-PD
7447789133	WURTH	获取价格	POWER-CHOKE WE-PD
7447789139	WURTH	获取价格	POWER-CHOKE WE-PD
7447789147	WURTH	获取价格	POWER-CHOKE WE-PD

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