A8293

Intended for analog and digital satellite receivers, this Low Noise Block Converter (LNBR) regulator is a linear, monolithic switching voltage regulator, specially designed to provide power and interface signals to an LNB converter via cable coaxial.
Voltage: 30V

SKU: SLY-IC050 Category: CHIPS

Product Description

Intended for analog and digital satellite receivers, this Low Noise Block Converter (LNBR) regulator is a linear, monolithic switching voltage regulator, specially designed to provide power and interface signals to an LNB converter via cable coaxial.
The A8293 requires few external components, with the boost switch and compensation circuits built into the interior of the device. A high switching frequency is chosen to minimize the size of the passive filter components, which further contributes to cost reduction.
The high levels of component integration guarantee extremely low noise and ripple values.

Specifications:

Type: Mosfet Integrated Circuits
Model Number: A8293
Voltage: 30V
Operating temperature: -20 ° C to 85 ° C
Technical sheet : https://pdf1.alldatasheet.com/datasheet-pdf/view/480272/ALLEGRO/A8293.html

Main features:

2-wire I²C ™ compatible serial interface: control (write) and status (read).
LNB voltages (8 programmable levels) compatible with all current standards, including Japanese domestic models.
Switching power converter for minimal dissipation.
Built-in converter switches and current sensing.
Provides up to 700mA of charging current.
The static current limiting circuit allows full current at start-up and the output transition 13 → 18 V; reliably starts a wide load range.
The push-pull output stage minimizes 13 → 18 V and 18 → 13 V output transition times for highly capacitive loads.
Rise / fall time adjustable via an external synchronization capacitor.
The built-in tone oscillator, factory set to 22 kHz, makes it easy to encode DiSEqC ™ tone, even when empty.
Four methods of tone generation at 22 kHz, via I²C ™ data bits and / or an external pin.
Auxiliary modulation input.
LNB overcurrent with timer.
Diagnosis of output voltage level, UVLO input power supply.