LTC3891EFE#PBF - Analog Devices Inc.

Manufacturer Part Number

LTC3891EFE#PBF

Manufacturer

Analog Devices

Introduction

The LTC3891EFE#PBF is a durable high voltage, step-down DC DC switching controller designed for efficient power management.

Product Features and Performance

Step-Down (Buck) regulator topology

Single Output with Transistor Driver

Flexible operating voltage range from 4V to 60V

Adjustable switching frequency from 105kHz to 835kHz, with a secondary range from 350kHz to 535kHz

Supports High duty cycle up to 99% for low dropout operation

Incorporates Synchronous Rectification for improved efficiency

Lacks Clock Synchronization feature

Control features include Current Limit, Enable, Frequency Control, Power Good, Soft Start, and Tracking

Thermal performance suitable for operating temperatures ranging from -40°C to 125°C

Product Advantages

High efficiency step-down voltage regulation for diverse applications.

Broad input voltage range suitable for various power sources.

Enables design flexibility through adjustable switching frequencies.

Synchronous Rectification enhances efficiency at high power levels.

Key Technical Parameters

Number of Outputs: 1

Output Phases: 1

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

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

Duty Cycle (Max): 99%

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

Operating Temperature: -40°C ~ 125°C

Quality and Safety Features

Built-in protection features against overcurrent conditions.

Ability to handle wide temperature variations for reliable operation.

Compatibility

Surface Mount device with a standard 20-TSSOP-EP package for easy integration.

Positive Output Configuration compatible with many circuit designs.

Application Areas

Can be used across a broad range of electronic devices including computing, automotive, telecommunications, and industrial systems.

Product Lifecycle

Active product status indicates ongoing production and availability.

No indication that it is nearing discontinuation, ensuring supply for future designs.

Several Key Reasons to Choose This Product

Supports a versatile input voltage scope, accommodating a range of power sources.

Facilitates design with its adjustable switching frequency range to meet specific application needs.

Highly efficient due to 99% maximum duty cycle and Synchronous Rectification.

Designed for high-temperature environments and diverse weather conditions.

Includes a range of control features to fine-tune performance and ensure stability.