Analog Devices Inc. LT8653S Dual Step-Down Regulators

Analog Devices Inc. LT8653S Dual Step-Down Regulators deliver up to 2A of continuous current from both channels and support loads up to 3A. The LT8653S devices feature the second-generation Silent Switcher architecture to minimize EMI emissions. The regulators deliver high efficiency at high switching frequencies. This includes integration of bypass capacitors to optimize high frequency current loops. By eliminating layout sensitivity, it's easy to achieve the advertised EMI performance.


  • Silent Switcher®2 Architecture:
    • Ultralow EMI on Any PCB
    • Eliminates PCB Layout Sensitivity
    • Internal Bypass Capacitors Reduce Radiated EMI
    • Optional Spread Spectrum Modulation
  • 2A DC from Each Channel Simultaneously
  • Up to 3A on Either Channel
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 6.2μA IQ Regulating 12VIN to 5VOUT1 and 3.3VOUT2
    • Output Ripple < 10mVP–P
  • Optional External VC Pin: Fast Transient Response
  • Forced Continuous Mode
  • High Efficiency at High Frequency
  • 94.1% Efficiency at 1A, 5VOUT from 12VIN at 2MHz
  • Pin-Selectable Fixed Output Voltages: 5V, 3.3V, 1.8V
  • Fast Minimum Switch-On Time: 30ns
  • Wide Input Voltage Range: 3.0V to 42V
  • Adjustable and Synchronizable: 300kHz to 3MHz
  • Fixed Output Pin Strap Options
  • Internal 2MHz fSW with Fast Internal Compensation
  • Small 4mm x 3mm 20-Pin LQFN Package
  • AEC-Q100 Automotive Qualification in Progress


  • General Purpose Step-Down
  • Automotive and Industrial Supplies

Additional Resources

Meet the demanding power requirements of automotive and industrial environments.

The LT8653S is a dual-channel, 2A, synchronous step-down regulator with a 3V-to-42V input voltage range. Silent Switcher® 2 technology enables the LT8653S to simultaneously operate at high frequency and high efficiency with exceptional EMI performance

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Analog Devices Inc. LT8653S Dual Step-Down Regulators


Zveřejněno: 2020-02-03 | Aktualizováno: 2022-03-11