Analog Devices Inc. LT8392 60V Synch 4-Switch Buck-Boost Controllers

Analog Devices Inc. LT8392 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum regulates output voltage, input, or output current from input voltage above, below, or equal to the output voltage. The LT8392 offers a proprietary peak-buck peak-boost current mode control scheme that allows adjustable, synchronizable 150kHz to 650kHz fixed-frequency operation or internal ±15% triangle spread-spectrum operation for low EMI.

The ADI LT8392 Buck-Boost Controllers feature a 3V to 60V input voltage range, 1V to 60V output voltage capability, and seamless low noise transitions between operation regions. The LT8392 is ideal for the voltage regulator, battery, and super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.

Additionally, the LT8392 provides input or output current monitor and power good flag. The fault protection function detects output short-circuit condition, during which the LT8392 retries, latches off, or keeps running.


  • 4-Switch single inductor architecture allows VIN above, below or equal to VOUT
  • Up to 98% efficiency
  • Proprietary peak-buck peak-boost current mode
  • 3V (Need EXTVCC ≥ 4.5V) to 60V wide VIN range
  • ±1.5% Output voltage accuracy to 1V ≤ VOUT ≤ 60V
  • ±4% Input or output current accuracy with monitor
  • Spread spectrum frequency modulation for low EMI
  • Integrated bootstrap diodes
  • 150kHz to 650kHz Adjustable and synchronizable
  • VOUT Disconnected from VIN during shutdown
  • Available in 28-Lead TSSOP with exposed pad and 28-lead QFN (4mm × 5mm)


  • Automotive
  • Industrial
  • Telecom systems
  • High frequency battery-powered system

Typical application

Application Circuit Diagram - Analog Devices Inc. LT8392 60V Synch 4-Switch Buck-Boost Controllers

4-Switch Buck-Boost Controller Layout for Low Emissions

Automotive application circuits must meet strict EMI standards to avoid interfering with broadcast and mobile service frequency bands so careful layout is imperative.

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Gepubliceerd op: 2020-10-30 | Bijgewerkt op: 2022-03-11