A8295SESTR-T ALLEGRO
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‘% Search: Contact Sales = PH Ld MicroSystems, Inc. High-Performance Semiconductors PRODUCTS APPLICATIONS DESIGN CENTER SAMPLES ABOUT ALLEGRO Home » Products » Regulators and Lighting » Low Noise Block Regulators for Satellite Set-Top Boxes » 48295 A8295: Single LNB Supply and Control Voltage Regulator DATASHEETS + Allegro Marketing f Intended for analog and digital satellite receivers, this single low noise block converter regulator (LNBR) is @ Gurvaryeg = a> Marketing for monolithic linear and switching voltage regulator, specifically designed to provide the power and the interface signals to an LNB down converter via coaxial cable. The A8295 requires few external components, with the boost switch and compensation circuitry integrated inside of the device. A high switching frequency is chosen SAMPLE & BUY de to minimize the size of the passive filtering components, further assisting in cost reduction. The high levels of = __ component integration ensure extremely low noise and ripple figures. Contact Your Local Sales Rep The A8295 has been designed for high efficiency, utilizing the Allegro® advanced BCD process. The integrated boost switch has been optimized to minimize both switching and static losses. To further enhance L efficiency, the voltage drop across the tracking regulator has been minimized. ere PRODUCT ALERTS . For DiSEqc™ communications, a tone control pin is provided to gate the internally-generated 22 kHz tone Weill notify you when there are on-and-off. updates to this product. Sign Up Acomprehensive set of fault registers are provided, which comply with all the common standards, including: overcurrent, thermal shutdown, undervoltage, and power not good. Furthermore, design methodology and structure ensure the highest level of robustness against transients and component failures. The device uses a 2-wire bidirectional serial interface, compatible with the I2C™ standard, that operates up to 400 kHz. The 48295 is supplied in a lead (Ph) free package. Product Image => PACKAGING TECHNICALDOCS NEWS LNB Supply and Control Voltage Regulators = Integrated boost MOSFET, current sensing, and compensation pk = Adjustable LNB output current limit from 250 to 960 mA y S ‘A = Covers wide array of application requirements @: —_ = Minimizes component sizing to fit each application = Allegro = For startup, reconfiguration, and continuous output * (maximum value depends on PCB thermal design) Click the image to view larger = Boost peak current limit scales with LNB current limit setting = 8 programmable LNB output voltage (DAC) levels 1 2 = LNB overcurrent limiter with shutdown timer = Static LNB current limit reliably starts a wide range of loads = Tracking boost converter minimizes power dissipation = LNB transition times configurable by external capacitor = Push-pull LNB output stage maintains 13 = 18 V and 18 = 13 ¥ transition times, even with highly capacitive loads = Builtin 22 kHz tone oscillator facilitates DISEqC™ tone encoding, even at no-load = Tone generation does not require additional external components = Diagnostic features: PNG, TDET = Dynamic tone detect amplitude and frequency transmitreceive thresholds = Extensive protection features: UVLO, OCP, TSD, CPOK = 2-wire I2C-compatible interface Part Number Specifications and Availability’ | —— 1 RoHS Part Composition / Check Frere | rete te | rere | tin | cman’ | comment | see | gun ° ° Contact your Check A8295SESTR-T 20-lead QFH = -20°C to 85 °C Yes View Data localleaieatron) lietranner Stack Contact your Check APEK8295SES-01-T DEMOBOARD -20°C to 85°C Ho -- local sales rep Distributor Stock Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.