The A8302 is a dual channel low noise block converter regulator (LNBR). The A8302 consists of a monolithic linear and switching voltage regulator, specifically designed to provide the power and the interface signals to an LNB down converter via coaxial cable in satellite TV receivers systems. The A8302 requires few external components, with the boost switch and compensation circuitry integrated inside of the device. The boost converter switching frequency and user-controlled current limit minimize the size of the passive filtering components. User controlled current limit and two switching frequency settings allow to optimize size of passive filtering components. A sleep pin is available to maximize power savings and to quickly shut down the device if needed, without using I2C™ control.
The A8302 has integrated tone detection capability and the internal driver allows full two-way DiSEqC™ communications. For DiSEqC™ communication, the IC provides an internal 22-kHz tone that is gated with the TONECTRLx pin or accepts an external 22-kHz tone through the TONECTRLx pin.
The A8302 offers Early Power Failure (EPF) warning, which helps to initiate shutdown routines. The A8302 maximum output reverse current can be set using the SINK_DIS bit.
A comprehensive set of fault registers are provided, which comply with all the common standards, including: overcurrent, thermal shutdown, undervoltage, and power not good.
The device uses a 2-wire bidirectional serial interface, compatible with the I2C™ standard, that operates up to 400 kHz. The A8302 is supplied in a 5 mm × 5 mm, 32-contact, lead (Pb) free QFN package (suffix ET), with 100% matte tin plated leadframe.
Astrorep Inc. (Allegro and Sanken Semiconductors,
Sanken Power Supplies)
700 Veterans Memorial Hwy
Hauppauge, NY 11788
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|Part Number||Package Type||Temperature||RoHS
|Part Composition /
|A8302SETTR-T||32-lead QFN||-20°C to 85°C||Yes||View Data||Contact your
local sales rep
|APEK8302SES-01-MH||DEMO BOARD||-20°C to 85°C||No||--||Contact your
local sales rep