Bumalik sa Analog Devices Inc.

Analog Devices Inc. LTC®3644 Monolithic Step-Down Regulators

Analog Devices Inc. LTC®3644 Monolithic Step-Down Regulators feature quad 1.25A output and can operate from input supplies up to 17V. The switching frequency is internally fixed to 1MHz or 2.25MHz. The regulators have a ±50% synchronization range. The devices feature ultralow quiescent current and high efficiency over a wide VIN and VOUT range.

Features

  • Quad step-down outputs 1.25A per channel
  • Wide VIN range 2.7V to 17V
  • Wide VOUT range 0.6V to VIN
  • 1.25A/2.5A/3.75A/5A IOUT configurable with one inductor
  • Integrated 300mΩ P-Channel/80mΩ N-Channel MOSFETs provide up to 93% efficiency
  • No-load burst mode operation IQ < 10µA with all channels enabled
  • Constant frequency (1MHz/2.25MHz) with ±50% frequency synchronization range
  • ±1% output voltage accuracy
  • Current mode operation for excellent line and load transient response
  • Full dropout operation (100% duty cycle)
  • Phase shift programmable with external clock
  • 5mm × 5mm × 1.72mm BGA package

Applications

  • Battery powered systems
  • Point-of-load supplies
  • Portable – handheld scanners and cameras

TYPICAL APPLICATION

Analog Devices Inc. LTC®3644 Monolithic Step-Down Regulators
Inilathala: 2022-10-24 | Na-update: 2022-11-08