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LX8580A Very Low Dropout Positive Regulator A Training Module for Sales Representatives and Distributors of Microsemi Products a network of semiconductor technology What is the LX8580A ? The LX8580A is a high-performance, very low dropout voltage regulator, designed for use with advanced microprocessors, micro controllers, or video graphics controllers. This product can be used with separate voltage supplies for the control and power sections, providing a power regulation dropout voltage as low as 100mV @ 1.5A Key Product Features • Low Dropout, 590mV (typ) at 7.5A Output Current in Dual Supply Mode • Fast Transient Response • Remote Sensing • Capable of 1mV Load Regulation • Linear Post-Regulators • Adjustable Output LX 8580A Packaging S-PAK 5-Pin 5 Pin TO-220 TAB is GND TAB is GND 5 VPWR VCTRL 5 4 VPWR 4 3 OUTPUT 3 OUTPUT 2 ADJUST SENSE 2 1 ADJUST 1 SENSE P PACKAGE (5-PIN) DF PACKAGE (Top View) VCTRL (Top View) 5 Pin TO-263 TAB is GND 5 VPWR 4 VCTRL 3 OUTPUT 2 ADJUST 1 SENSE DD PACKAGE (5-PIN) (Top View) Typical Application 5.0V Tantalum 33µF VCTRL VOUT = 2.8V OUTPUT SENSE LX8580A R1 500µF 3.3V VPWR ADJUST Tantalum 100µF R2 R1 = 121W R2 = 150W Product Applications •Microprocessor/Micro controller Supplies •3.3V to 2.85V Voltage Conversion •High-Current Regulators •Post Regulation for Switching Power Supplies LX8580A Competitive Analysis Competitor Part No. VCTRL Input Range (Max) Semtech EZ1580 13.2 +1% 80 dB 7.0 A N/A Microsemi LX8580A 13V +1% 80 dB 7.5 A 590mV VREF Tolerance Ripple Rej. @ 120Hz Max. Output Current Dropout Voltage @ 7.5A Notes TO-220/263 pin to pin compatible CS5257A 13 +1.5% 80 dB 7.0 A N/A TO-220/263 pin to pin compatible Linear Tech LT1580 13 +1.5% 80 dB 7.0 A N/A TO-220/263 pin to pin compatible Unisem US1175 14 +1% 80 dB 7.5 A 500mV S-PAK & TO220/263 pin to pin compatible ON Semiconductor Sales Strategy Identifying the Application • Power supplies: isolated (AC:DC or DC:DC) with regulated 3.3V (or lower) output. • Power for sub-2.5V integrated circuits (e.g., microprocessors). • Step-down power conversion (step down) when minimal periphery components, cost, and size are the focus. Sales Strategy Product Positioning • Sell the LX8580A In Applications 1)Requiring low-voltage and high current. 2)Requiring 2.9V (and lower); where 5.0V and 3.3V is available. 3)Where small volume packaging is required. Sales Strategy Facts to Remember •LX8580A – Is specified from 0 to 125°C. – Comes in industry standard packages. – Has the same pin-out as most competitors.