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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. The device uses a 2-wire bidirectional serial interface, compatible with the I2C (Inter-C bus) stand.
• 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 protection
• LNB voltages (16 possible levels) compatible with all
common standards
Packages
16-pin SOIC (A8285)
24-pin SOIC (A8287)
Description
Intended for analog and digita.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | A8280 |
AiT Semiconductor |
8-CH LED BACKLIGHT DRIVER |
|
| 2 | A8283 |
Allegro |
LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR |
|
| 3 | A8284 |
Allegro |
TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR |
|
| 4 | A8285 |
Allegro |
LNB Supply and Control Voltage Regulator |
|
| 5 | A8286 |
Allegro MicroSystems |
Dual LNB Supply and Control Voltage Regulator |
|
| 6 | A82 |
Tyco Electronics |
20 TO 250 MHz CASCADABLE AMPLIFIER |
|
| 7 | A8205SLH |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY |
|
| 8 | A821 |
Secos |
PNP Plastic Encapsulated Transistor |
|
| 9 | A821 |
JIANGSU CHANGJIANG |
PNP Transistor |
|
| 10 | A821S |
Rohm |
2SA821S |
|
| 11 | A8220SLH |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY |
|
| 12 | A8222SLH |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY |
|