LTC3890EGN-1#PBF - Analog Devices Inc.

Manufacturer Part Number

LTC3890EGN-1#PBF

Manufacturer

Analog Devices

Introduction

High-performance power management integrated circuit (PMIC) for DC-DC switching controllers

Product Features and Performance

Dual, 2-phase synchronous step-down DC-DC controller

Wide input voltage range from 4V to 60V

Adjustable frequency from 105kHz to 835kHz and 350kHz to 535kHz

Up to 99% duty cycle for efficient operation

Synchronous rectification for improved efficiency

Soft start and tracking capabilities

Power good signal output for system monitoring

Thermal shutdown for enhanced protection

Product Advantages

High efficiency and low power loss

Robust operation over a wide input voltage range

Flexible switching frequency options

Dual output for powering multiple loads

Integration of multiple control features in a single chip

Key Technical Parameters

Output Type: Transistor Driver

Function: Step-Down

Output Configuration: Positive

Topology: Buck

Number of Outputs: 2

Output Phases: 2

Voltage - Supply (Vcc/Vdd): 4V ~ 60V

Frequency - Switching: 105kHz ~ 835kHz and 350kHz ~ 535kHz

Duty Cycle (Max): 99%

Synchronous Rectifier: Yes

Control Features: Enable, Frequency Control, Power Good, Soft Start, Tracking

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

Quality and Safety Features

Thermal shutdown

Under-voltage lockout

Over temperature protection

Current-mode operation for excellent line and load transient response

Compatibility

Surface Mount

Package / Case: 28-SSOP (0.154", 3.90mm Width)

Supplier Device Package: 28-SSOP

Application Areas

Telecommunication equipment

Automotive electronics

Industrial power supplies

Datacom and Telecom systems

Distributed DC power systems

Product Lifecycle

Active Product

Not nearing discontinuation

Replacements or upgrades may be available

Several Key Reasons to Choose This Product

Broad input voltage range accommodating various sources

High efficiency reducing thermal footprint and saving energy

Flexibility in frequency synchronization with external sources

Dual outputs for simultaneous multiple voltage rail management

Comprehensive protection features ensuring system reliability

Extended operating temperature range suitable for industrial applications

Trusted manufacturer with a strong track record in power management solutions