LTC3854EDDB - Analog Devices Inc.

Manufacturer Part Number

LTC3854EDDB

Manufacturer

Analog Devices

Introduction

The LTC3854EDDB is a high-performance step-down switching regulator controller from Analog Devices that regulates an output voltage from a higher input voltage.

Product Features and Performance

High efficiency due to the step-down topology

Transistor driver output type for enhanced control

Single output with one phase simplifies the power design

Supports a wide range of input voltages from 4.5V to 38V

Adjustable switching frequency up to 400kHz

Maximum duty cycle of 98% allows for near full-scale output voltage

Incorporates a synchronous rectifier for improved efficiency

Features soft start and enable control for smoother operation

Product Advantages

High voltage range suitability makes it versatile for various applications

High duty cycle extends usable range of output voltage regulation

The synchronous rectification capability provides greater power efficiency

Support for simple and efficient power supply designs

Key Technical Parameters

Output Type: Transistor Driver

Function: Step-Down

Output Configuration: Positive

Topology: Buck

Number of Outputs: 1

Output Phases: 1

Voltage Supply (Vcc/Vdd): 4.5V to 38V

Frequency Switching: 400kHz

Duty Cycle (Max): 98%

Synchronous Rectifier: Yes

Quality and Safety Features

Operating Temperature between -40°C and 85°C, catering for broad commercial and industrial applications

Surface mount device allows secure integration into circuit designs

Compatibility

Direct compatibility with a wide range of power supply applications due to standard 12-WFDFN Exposed Pad package

Suitable for designing step-down voltage supplies with robust performance requirements

Application Areas

Industrial and commercial electronics that require regulated DC power

Distributed power systems

Point-of-load power supply systems

Product Lifecycle

Obsolete status indicates the manufacturer has discontinued the product

Replacement or alternative products should be explored for new systems designs

Several Key Reasons to Choose This Product

High input voltage range makes it versatile across multiple industries

High efficiency due to synchronous rectification reduces heat dissipation

Allows for near full-scale output voltage regulation owing to its maximum 98% duty cycle

Simplified power supply design with its integrated features and single output phase

Robust temperature operating range supporting industrial-grade applications