Analog Devices Inc. LT8692S Step-Down Switching Regulators

Analog Devices Inc. LT8692S Step-Down Switching Regulators are quad-channel step-down, current mode, monolithic buck switching regulators. All regulators are synchronized to a single oscillator with a fixed frequency of 2MHz. The “S” at the end of the part number refers to the second-generation Silent Switcher® technology, which includes an integrated bypass capacitor to deliver a high frequency and small solution size with excellent EMI performance. The integrated capacitors also make achieving the advertised EMI performance easier by reducing layout sensitivity. This performance makes the Analog Devices Inc. LT8692S ideal for noise-sensitive applications and environments. The highly integrated four-channel solution saves space and simplifies the design of compact boards.

Burst Mode operation enables ultra-low standby current consumption, forced continuous mode can be used to control frequency harmonics across the entire output load range, or spread spectrum operation can further reduce EMI emissions. The fast, clean, low overshoot switching edges enable high-efficiency operation at high switching frequencies. This capability leads to a small solution size with wide control loop bandwidth for a fast transient response.

Features

  • Flexible power supply system providing four outputs with a wide input range
  • One high-voltage synchronous buck regulator
    • 3V to 42V input voltage range
    • Continuous output current up to 2A
    • High efficiency up to 93%
  • Three low-voltage synchronous buck regulators
    • 1.2V to 8V input voltage range
    • Continuous output currents up to 1A
    • High efficiency up to 95%
  • Silent Switcher® Architecture
    • Ultra-low EMI/EMC emissions
    • Spread spectrum frequency modulation
  • Ultra-low quiescent current Burst Mode® operation
    • 9.6μA IQ regulating 12VIN1 to 5V/3.3V/1.8V/1.2VOUT1-4
    • Output ripple <10mVPK-PK
  • External synchronization capability
  • Forced continuous mode capability
  • Small thermally enhanced 4mm × 3mm 20-Lead LQFN package
  • AEC-Q100 qualified for automotive applications

Applications

  • Camera modules
  • Automotive systems
  • Industrial controls and power supplies

Typical Application

Application Circuit Diagram - Analog Devices Inc. LT8692S Step-Down Switching Regulators

Analog Devices Inc. LT8692S Step-Down Switching Regulators