LTC3855IUJ#TRPBF - Analog Devices Inc.

Manufacturer Part Number

LTC3855IUJ#TRPBF

Manufacturer

Analog Devices

Introduction

The LTC3855 is a high-performance, dual output synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages.

Product Features and Performance

Dual output synchronous step-down switching regulator

Supports a wide input voltage range from 4.5V to 38V

Adjustable switching frequency from 250kHz to 770kHz

Maximum duty cycle of 95% allows for low dropout operation

Integrated synchronous rectifier for improved efficiency

Does not support clock synchronization

Features include current limit, enable, frequency control, phase control, power good, soft start, and tracking

Operating temperature range from -40°C to 125°C

Product Advantages

High efficiency due to synchronous rectification

Flexible power design with adjustable switching frequency and dual outputs

Robust power solution with integrated protection features

Suitable for a wide range of input voltages

Key Technical Parameters

Number of Outputs: 2

Output Phases: 2

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

Frequency Switching: 250kHz ~ 770kHz

Duty Cycle (Max): 95%

Operating Temperature: -40°C ~ 125°C (TJ)

Quality and Safety Features

Integrated protection features ensuring safe operation under abnormal conditions

Compatibility

Compatible with a wide variety of N-channel power MOSFETs

Application Areas

Telecommunications

Networking equipment

Industrial systems

Computing systems

Product Lifecycle

Status: Active

Not nearing discontinuation, with good availability of replacements and upgrades

Several Key Reasons to Choose This Product

High performance with dual output capabilities for complex power systems

Wide input voltage range supports diverse applications

Adjustable switching frequency maximizes efficiency

Integrated safety features ensure reliable operation

Active product lifecycle status guarantees ongoing availability and support