A8292

A8292 Dual LNB Supply and Control Voltage Regulator Features and Benefits Description ▪ 2-wire serial I2C™ -compatible interface: control (write) and Intended for analog and digital satellite receivers, this dual status (read) low-noise block converter regulator (LNBR) is a monolithic ▪ LNB voltages (16 programmable levels) compatible with linear and switching voltage regulator, specifically designed to all common standards provide the power and the interface signals to two LNB down ▪ Tracking switch-mode power converter for lowest dissipation converters via coaxial cables. The A8292 requires few external ▪ Integrated converter switches and current sensing components, with the boost switches and compensation circuitry ▪ Provides up to 500 mA per channel and 750 mA total integrated inside of the device. A high switching frequency is ▪ Static current limit circuit allows full current at startup and chosen to minimize the size of the passive filtering components, 13→18 V output transition; reliably starts wide load range further assisting in cost reduction. The high level of component ▪ Push-pull output stage minimizes 13→18 V and 18→13 V integration ensures extremely low noise and ripple figures. output transition times for highly capacitive loads The A8292 has been designed for high efficiency, utilizing ▪ Adjustable rise/fall time via external timing capacitor the Allegro® advanced BCD process. The integrated boost ▪ Built-in tone oscillator, factory-trimmed to 22 kHz switche...