60V synchronous 4-switch buck-boost controller with spread spectrum: Page 2 of 2

November 24, 2016 //By Graham Prophet
60V synchronous 4-switch buck-boost controller with spread spectrum
LT8390 is a synchronous buck-boost DC/DC controller that can regulate output voltage, and input or output current from input voltages above, below and equal to the output voltage. Its 4V to 60V input voltage range and 0V to 60V output voltage range are aimed at voltage regulator, battery and supercap charger applications in automotive, industrial, telecom and battery-powered systems.

Summary of Features: LT8390


4-switch single inductor architecture allows VIN above, below or equal to VOUT

Synchronous switching: up to 98% efficiency

Proprietary peak-buck peak-boost current mode

Wide VIN range: 4V to 60V

±1.5% output voltage accuracy: 1V ≤ VOUT ≤ 60V

±3% input or output current accuracy with monitor

Spread spectrum frequency modulation for low EMI

High side PMOS load switch driver

Integrated bootstrap diodes

No top MOSFET refresh noise in buck or boost

Adjustable & synchronizable: 150 kHz to 650 kHz

VOUT disconnected from VIN during shutdown

Available in 28-lead TSSOP with exposed pad & 28-lead QFN (4mm × 5mm)


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