LTC3891EFE#TRPBF - Analog Devices Inc.

Manufacturer Part Number

LTC3891EFE#TRPBF

Manufacturer

Analog Devices

Introduction

High-voltage, step-down DC DC switching controller for power management applications.

Product Features and Performance

Step-down (buck) controller

Single output transistor driver

Positive output configuration

Highly efficient synchronous rectification

Current limit, enable, frequency control, power good, soft start, and tracking features

Product Advantages

Supports a wide input voltage range from 4V to 60V

Adjustable switching frequency from 105kHz to 835kHz

Capable of reaching up to 99% duty cycle for low dropout operation

Suitable for high temperature environments with operating temperature range of -40°C to 125°C

Key Technical Parameters

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

Frequency - Switching: 105kHz ~ 835kHz, fixed range 350kHz ~ 535kHz

Duty Cycle (Max): 99%

Output Type: Transistor Driver

Topology: Buck

Number of Outputs: 1

Output Phases: 1

Synchronous Rectifier: Yes

Quality and Safety Features

Built-in current limit for overcurrent protection

Thermal management with a specified operating temperature range

Compatibility

Surface mount technology for PCB integration

Compatible with 20-TSSOP (0.173", 4.40mm Width) Exposed Pad package

Application Areas

Power management in automotive, industrial, telecommunications, and computing systems

Product Lifecycle

Product status is active, no indication of discontinuation, replacements or upgrades should be verified with manufacturer.

Several Key Reasons to Choose This Product

Wide input voltage range accommodates various sources and systems

Highly adjustable switching frequency for optimal performance

Synchronous rectification enables high efficiency

Robust feature set for controlled startup and operation

High duty cycle capability for low voltage drops

Operates safely in extreme temperature environments