LTC3828EUH#PBF - Analog Devices Inc.

Manufacturer Part Number

LTC3828EUH#PBF

Manufacturer

Analog Devices

Introduction

High-performance, dual output synchronous step-down switching regulator controller

Product Features and Performance

Dual, independent DC-DC outputs

PolyPhase operation for paralleling phases

Up to 99.4% duty cycle for low dropout operation

Programmable frequency from 260kHz to 550kHz

Power Good output voltage monitoring

Phase-Lockable frequency (260kHz to 550kHz)

Low quiescent current of 300uA

Product Advantages

High efficiency with synchronous rectification

Flexible power supply operating from 4.5V to 28V

Stable operation with ceramic output capacitors

Current mode operation for excellent line and load transient response

Thermal protection and overcurrent protection for added safety

Small 32-QFN package saves board space

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): 4.5V ~ 28V

Frequency - Switching: 260kHz ~ 550kHz

Duty Cycle (Max): 99.4%

Synchronous Rectifier: Yes

Control Features: Enable, Phase Control, Power Good, Tracking

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

Mounting Type: Surface Mount

Package / Case: 32-WFQFN Exposed Pad

Supplier Device Package: 32-QFN (5x5)

Quality and Safety Features

Overvoltage and overcurrent protection

Thermal shutdown with hysteresis

Low ripple Burst Mode operation

Pb-free and RoHS compliant

Built-in soft-start functionality

Compatibility

Optimized for use with low ESR output capacitors, including ceramics

Application Areas

High performance datacom and telecom systems

Distributed power systems

Networking and servers

Portable and battery-powered equipment

Industrial and automotive power supplies

Product Lifecycle

Active status, currently not nearing discontinuation

Replacements or upgrades may be available for future design considerations

Several Key Reasons to Choose This Product

High efficiency design reduces energy consumption and heat generation

Dual outputs offer flexibility for complex power supply designs

Configurable switching frequency allows optimization for efficiency or size

Robust safety features ensure reliable operation under abnormal conditions

Suitability for a wide range of applications from consumer to industrial markets

Proven track record from a reputable manufacturer, ensuring reliability and performance