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Analog Devices / Maxim Integrated LT8060x/LT8060xHV Synchronous Step-Down Regulators

Analog Devices LT8060x/LT8060xHV Synchronous Step-Down Regulators feature the Silent Switcher® architecture to minimize electromagnetic interference (EMI) emissions while delivering high efficiency at frequencies up to 3MHz. The LT80602 and LT80602HV deliver up to 2.5A continuous current, the LT80603 and LT80603HV support up to 3.5A, and the LT80603A and LT80603AHV provide up to 4.5A continuous current. An ultralow 8μA quiescent current, with the output fully regulated, enables applications requiring the highest efficiency at light loads. An accurate enable threshold can be set using the EN/UV pin and a resistor at the RT pin to program the switch frequency.  

The Analog Devices LT8060x/LT8060xHV enable high-VIN to low-VOUT conversion at high frequency, featuring a production-tested fast minimum top-switch on-time of 25ns (typical). In addition, the device features a PG/TJ pin that can be used to monitor the output voltage or die temperature. The die temperature monitor allows for direct measurement of the silicon die temperature, enabling a robust and reliable power supply design.

 

Features

  • Silent Switcher architecture
    • Ultralow EMI emissions
    • Spread spectrum frequency modulation
  • High efficiency at high frequency
    • Up to 94.3% at 400kHz, 90% at 2.1MHz, 24VIN to 5VOUT
    • Up to 95.6% at 400kHz, 91.1% at 2.1MHz, 48VIN to 12VOUT
  • Pin selectable fixed 3.3V, fixed 5V, or adjustable output from 0.8V to 99% of VIN
  • Low quiescent current burst mode operation (8μA IQ regulating 24VIN to 5VOUT)
  • On-the-fly mode change among burst mode, pulse-skipping mode, and FCM
  • Built-in output-voltage monitoring and die temperature monitoring with PG/TJ
  • 200kHz to 3MHz adjustable switching frequency with external clock synchronization
  • 80V transient-input tolerant (LT8060xHV)
  • Programmable soft-start and tracking
  • Small 17-lead 3mm × 3mm Quad Flat No-lead (QFN)

Applications

  • General-purpose step-down
  • Automotive and industrial supplies

Simplified Application Diagram

Application Circuit Diagram - Analog Devices / Maxim Integrated LT8060x/LT8060xHV Synchronous Step-Down Regulators
Published: 2026-04-09 | Updated: 2026-04-13