Allegro MicroSystems A8286
The A8286 requires few external components, with the boost switches and compensation circuitry integrated inside of the device. The high level of component integration ensures extremely low noise and ripple figures. The A8286 has been designed for high efficiency, utilizing the Allegro™ advanced BCD process.| Part No. | A8286 |
|---|---|
| Datasheet | A8286 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Dual LNB Supply and Control Voltage Regulator |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● 2-wire serial I2C™ -compatible interface: control (write) and status (read)● LNB voltages (16 programmable levels) compatible with all common standards
● Tracking switch-mode power converter for lowest dissipation
● Integrated converter switches and current sensing
● Output current limit of 900 mA typical, with 48 ms timer
● Static current limit circuit allows full current at startup and 13→18 V output transition; reliably starts wide load range
● Push-pull output stage minimizes 13→18 V and 18→13 V output transition times for highly capacitive loads
● Adjustable rise/fall time via external timing capacitor
● Built-in tone oscillator, factory-trimmed to 22 kHz facilitates DiSEqC™ tone encoding, even at no-load
● Four methods of 22 kHz tone generation, via I2C™ data bits and/or external pin
● 22 kHz tone detector facilitates DiSEqC™ 2.0 decoding
● Diagnostics for output voltage level, input supply UVLO, and DiSEqC™ tone output
● Cable disconnect diagnostic
● Aux...
