LT8390EUFD#PBF

LT8390 is a synchronous 4-switch buck-boost DC/DC controller that regulates output voltage, input or output current from an input voltage above, below, or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme allows adjustable and synchronizable 150kHz to 650kHz fixed frequency operation, or internal ±15% triangle spread spectrum frequency modulation for low EMI. With a 4V to 60V input voltage range, 0V to 60V output voltage capability, and seamless low noise transitions between operation regions, the LT8390 is ideal for voltage regulator, battery and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems. The LT8390 provides input or output current monitor and power good flag. Fault protection is also provided to detect output short-circuit condition, during which the LT8390 retries, latches off, or keeps running.

• 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
• ±1.5% output voltage accuracy: 1V ≤ VOUT ≤ 60V
• ±3% input or output current accuracy with monitor
• High side PMOS load switch driver
• Integrated bootstrap diodes
• No top MOSFET refresh noise in buck or boost
• 28-lead (4mm × 5mm) plastic QFN package
• Temperature range from -40°C to 125°C

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