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Analog Devices Inc. LTC7803 Synchronous Step-Down Controllers

Analog Devices Inc. LTC7803 Synchronous Step-Down Controllers are high-performance, 100% duty cycle capable, synchronous step-down DC/DC switching regulator controllers that drive an all N-channel power MOSFET stage. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements. A constant frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. Analog Devices LTC7803 Synchronous Step-Down Controllers operate from a wide 4.5V to 40V input supply range.

The low no-load quiescent current extends operating runtime in battery-powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode at light loads. The LTC7803 additionally features spread-spectrum operation, which significantly reduces the peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards.

Features

  • 12µA (14V VIN to 3.3V VOUT) low operating IQ
  • 4.5V to 40V wide input voltage range
  • Output voltage up to 40V
  • Spread spectrum operation
  • RSENSE or DCR current sensing
  • Pass-Thru™/100% duty cycle capable
  • 100% duty cycle operation
  • 100kHz to 3MHz programmable fixed frequency range
  • 100kHz to 3MHz phase-lockable frequency range
  • Selectable continuous, pulse-skipping, or low ripple Burst Mode® operation at light loads
  • 1.2μA low shutdown IQ
  • Thermally enhanced 16-pin 3mm × 3mm QFN and MSOP packages
  • AEC-Q100 qualification in progress

Applications

  • Automotive and transportation
  • Industrial
  • Military/avionics
  • Telecommunications

Videos

Typical Application

Application Circuit Diagram - Analog Devices Inc. LTC7803 Synchronous Step-Down Controllers

Evaluation Boards

Analog Devices Inc. DC2834A Demo Board for the LTC7803

DC/DC synchronous step-down converter featuring the LTC7803 Controllers.

Learn MoreAnalog Devices Inc. DC2834A Demo Board for the LTC7803 hakkında View ProductsAnalog Devices Inc. DC2834A Demo Board for the LTC7803 ile ilgili
Yayınlandı: 2020-06-05 | Güncellenmiş: 2024-10-07