Analog Devices LT8390A

Description

The LT®8390A is a synchronous 4-switch buck-boost DC/DCcontroller that regulates output voltage, input or outputcurrent from an input voltage above, below, or equal tothe output voltage. The proprietary peak-buck peak-boostcurrent mode control scheme allows adjustable and synchronizable600kHz to 2MHz fixed frequency operation, orinternal 25% triangle spread spectrum frequency modulationfor low EMI. With a 4V to 60V input voltage range, 0Vto 60V output voltage capability, and seamless low-noisetransitions between operation regions, the LT8390A is idealfor voltage regulator, battery and supercapacitor chargerapplications in automotive, industrial, telecom, and evenbattery-powered systems.The LT8390A provides input or output current monitorand power good flag. Fault protection is also provided todetect output short-circuit condition, during which theLT8390A retries, latches off, or keeps running.

Features

nn 4-Switch Single Inductor Architecture Allows VINAbove, Below or Equal to VOUTnn Up to 95% Efficiency at 2MHznn Proprietary Peak-Buck Peak-Boost Current Modenn Wide VIN Range: 4V to 60Vnn ±1.5% Output Voltage Accuracy: 1V ≤ VOUT ≤ 60Vnn ±3% Input or Output Current Accuracy with Monitornn Spread Spectrum Frequency Modulation for Low EMInn High Side PMOS Load Switch Drivernn No Top MOSFET Refresh Noise in Buck or Boostnn Adjustable and Synchronizable: 600kHz to 2MHznn VOUT Disconnected from VIN During Shutdownnn Available in 28-Lead TSSOP with Exposed Pad and28-Lead QFN (4mm × 5mm)

Typical applications

• High Frequency Battery-Powered System
• Automotive, Industrial, Telecom Systems

More information

• Datasheet
• IC product information