LTC3642EMS8E-3.3#TRPBF - Analog Devices Inc.

Manufacturer Part Number

LTC3642EMS8E-3.3#TRPBF

Manufacturer

Analog Devices, Inc.

Introduction

High efficiency, 45V, 50mA synchronous step-down DC/DC converter

Product Features and Performance

High efficiency up to 95%

Fixed 3.3V output voltage

Wide 4.5V to 45V input voltage range

50mA continuous output current

Silent Switcher architecture for low EMI

Integrated high and low side power switches

Cycle-by-cycle current limit

Thermal shutdown protection

Low quiescent current of 25uA

Product Advantages

Compact 8-MSOP package with exposed thermal pad

No external compensation required

Excellent transient response

Guaranteed start-up into a pre-biased load

Key Technical Parameters

Input Voltage Range: 4.5V to 45V

Output Voltage: 3.3V

Output Current: 50mA

Switching Frequency: 2MHz

Efficiency: Up to 95%

Quiescent Current: 25uA

Quality and Safety Features

ROHS3 compliant

Thermal shutdown protection

Compatibility

Suitable for a variety of low power applications that require a regulated 3.3V supply from a wide input voltage range

Application Areas

Portable electronics

Industrial controls

Telecommunications equipment

Automotive electronics

Product Lifecycle

This product is currently in production and is not nearing discontinuation

Replacement or upgrade options are available if needed

Key Reasons to Choose This Product

High efficiency up to 95% for power-sensitive applications

Wide 4.5V to 45V input voltage range for flexibility

Compact 8-MSOP package with exposed thermal pad for small size and good thermal management

Integrated power switches and no external compensation required for easy implementation

Cycle-by-cycle current limit and thermal shutdown protection for reliable operation