LTC3868EUH#PBF - Analog Devices Inc.

Manufacturer Part Number

LTC3868EUH#PBF

Manufacturer

Analog Devices

Introduction

High performance step-down switching regulator controller for power management applications.

Product Features and Performance

Dual output, two-phase synchronous step-down DC/DC controller

Wide 4V to 24V operating input range

Selectable switching frequency from 105kHz to 835kHz

High duty cycle operation up to 99.4%

PolyPhase operation with phase control for load sharing and reduced input capacitance

Low quiescent current for enhanced power efficiency

Output overvoltage protection

Soft-start feature to limit inrush current during startup

Power Good signal for system monitoring

Product Advantages

High efficiency synchronous operation with selectable frequency to optimize performance

Support for a wide range of input voltages accommodating various applications

Ability to drive N-channel MOSFETs for reduced system cost

Programmable phase control offering design flexibility

Robust thermal performance due to QFN package

Integrated features for protection and system status monitoring

Key Technical Parameters

Voltage - Supply (Vcc/Vdd): 4V ~ 24V

Frequency - Switching: 105kHz ~ 835kHz

Duty Cycle (Max): 99.4%

Number of Outputs: 2

Output Phases: 2

Topology: Buck, Positive Output Configuration

Operating Temperature: -40°C ~ 85°C (TA)

Quality and Safety Features

Precision voltage regulation

Overvoltage protection circuitry

Thermal shutdown protection

Under voltage lockout (UVLO)

Current limit for over-current protection

Compatibility

Surface mount compatible with 32-WFQFN Exposed Pad

Drives N-channel MOSFETs

Application Areas

High efficiency multi-phase power supplies

Distributed Power Systems

Telecommunications infrastructure

Servers and networking equipment

Industrial power systems

Product Lifecycle

Active product with ongoing manufacturer support

Not reported to be nearing discontinuation

Details on direct replacements or upgrades should be sourced directly from manufacturer

Several Key Reasons to Choose This Product

Versatile input voltage range suitable for a broad range of applications

Programmable frequency to minimize electromagnetic interference (EMI)

Two-phase operation improves efficiency and reduces thermal stress

High duty cycle capability enables low dropout operation

Built-in safety features ensure system protection

Comprehensive support from Analog Devices

Multi-phase capability allows design scalability for different power levels