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A8287 - LNB Supply and Control Voltage Regulator

Download the A8287 datasheet PDF. This datasheet also covers the A8285 variant, as both devices belong to the same lnb supply and control voltage regulator family and are provided as variant models within a single manufacturer datasheet.

General Description

Intended for analog and digital satellite receivers, the LNB (low noise block) converter regulator is a monolithic linear and switching voltage regulator, specifically designed to provide power and interface signals to an LNB downconverter, via coaxial cable.

Key Features

  • LNB selection and standby function.
  • Provides up to 500 mA load current.
  • Two-wire serial I2C interface.
  • Built-in tone oscillator, factory-trimmed to 22 kHz; facilitates DiSEqC™ 2.0 encoding.
  • Auxiliary modulation input.
  • 22 kHz tone detector facilitates DiSEqC™ decoding (A8287 only).
  • Tracking switch-mode power converter for lowest dissipation.
  • LNB overcurrent protection and diagnostics.
  • Internal overtemperature protec.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (A8285-Allegro.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
A8280 8-CH LED BACKLIGHT DRIVER AiT Semiconductor
A8286 Dual LNB Supply and Control Voltage Regulator Allegro MicroSystems
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A8205SLH LOW-DROPOUT REGULATORS . HIGH EFFICIENCY Allegro MicroSystems
A821 PNP Plastic Encapsulated Transistor Secos

Other Datasheets by Allegro MicroSystems

Part Number Description
A8283 LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR
A8284 TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR
A8285 LNB Supply and Control Voltage Regulator
A8296 Single LNB Supply and Control Voltage Regulator
A8297 Dual LNB Supply and Control Voltage Regulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
A8285 and A8287 LNB Supply and Control Voltage Regulator Features and Benefits • LNB selection and standby function • Provides up to 500 mA load current • Two-wire serial I2C interface • Built-in tone oscillator, factory-trimmed to 22 kHz; facilitates DiSEqC™ 2.