Allegro MicroSystems A8302 Supply & Control Voltage Regulators

Allegro MicroSystems A8302 Supply and Control Voltage Regulators are dual-channel low-noise block converter regulators. The A8302 has a monolithic linear and switching voltage regulator designed to provide power and interface signals to an LNB down converter. It uses a coaxial cable in satellite TV receivers systems. The A8302 requires a few external components, with the boost switch and compensation circuitry integrated inside the device.

Features

  • Integrated boost MOSFET, current sensing, and compensation
  • Configurable boost capacitor option through I2C™ control register ceramic or electrolytic
  • Two switching frequency settings are programmable through the I2C™ control register (563 kHz and 939 kHz)
  • Adjustable LNB output current limit from 250 to 950mA
  • Covers a wide array of application requirements
  • Minimizes component sizing to fit each application
  • For a startup, reconfiguration and continuous output
  • Optional temporary increased current limit (+25%)
  • Internal gate drives output BFGATEx for bypass FET used in DiSEqC™ applications

Block Diagram

Allegro MicroSystems A8302 Supply & Control Voltage Regulators
Paskelbta: 2022-07-27 | Atnaujinta: 2022-08-10