3412IFE数据手册ADI中文资料规格书

描述 Description

DESCRIPTION
The LTC® 3412 is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant
frequency, current mode architecture. It operates from an input voltage range of 2.625V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 2.5A of output current.FEATURES
■ High Efficiency: Up to 95%
■ 2.5A Output Current
■ Low Quiescent Current: 62μA
■ Low RDS(ON)Internal Switches: 85mΩ
■ Programmable Frequency: 300kHz to 4MHz
■ No Schottky Diode Required
■ ±2% Output Voltage Accuracy
■ 0.8V Reference Allows Low Output Voltage
■ Selectable Forced Continuous/Burst Mode Operation with Adjustable Burst Clamp
■ Synchronizable Switching Frequency
■ Low Dropout Operation: 100% Duty Cycle
■ Power Good Output Voltage Monitor
■ Overtemperature Protection
■ Available in 16-Lead Thermally Enhanced TSSOP and QFN PackagesAPPLICATIONS
■ Portable Instruments
■ Battery-Powered Equipment
■ Notebook Computers
■ Distributed Power Systems
■ Cellular Telephones
■ Digital Cameras

特性 Features

■ High Efficiency: Up to 95%
■ 2.5A Output Current
■ Low Quiescent Current: 62μA
■ Low RDS(ON)Internal Switches: 85mΩ
■ Programmable Frequency: 300kHz to 4MHz
■ No Schottky Diode Required
■ ±2% Output Voltage Accuracy
■ 0.8V Reference Allows Low Output Voltage
■ Selectable Forced Continuous/Burst Mode Operation with Adjustable Burst Clamp
■ Synchronizable Switching Frequency
■ Low Dropout Operation: 100% Duty Cycle
■ Power Good Output Voltage Monitor
■ Overtemperature Protection
■ Available in 16-Lead Thermally Enhanced TSSOP and QFN Packages