Datasheet A80601, A80601-1 (Allegro) - 37

ManufacturerAllegro
DescriptionHigh Power LED Driver with Pre-Emptive Boost for Ultra-High Dimming Ratio and Low Output Ripple
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A80601 and. High Power LED Driver with Pre-Emptive Boost. A80601-1 for Ultra-High Dimming Ratio and Low Output Ripple

A80601 and High Power LED Driver with Pre-Emptive Boost A80601-1 for Ultra-High Dimming Ratio and Low Output Ripple

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A80601 and High Power LED Driver with Pre-Emptive Boost A80601-1 for Ultra-High Dimming Ratio and Low Output Ripple Revision History Number Date Description
– March 4, 2019 Initial release Copyright 2019, Allegro MicroSystems, LLC Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. Copies of this document are considered uncontrolled documents. For the latest version of this document, visit our website:
www.allegromicro.com
Allegro MicroSystems, LLC 37 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Document Outline Features and Benefits Description Applications Package Selection Guide Absolute Maximum Ratings Thermal Characteristics Typical Application – SEPIC Functional Block Diagram Pinout Diagram and Terminal List Electrical Characteristics Functional Description Enabling the IC Powering Up: LED Detection Phase Powering Up: Boost Output Undervoltage Soft Start Function Frequency Selection Synchronization Loss of External Sync Signal Switching Frequency Dithering Clock Out Function LED Current Setting PWM Dimming Pre-Emptive Boost (PEB) Analog Dimming ADIM Mode APWM Mode Extending LED Dimming Ratio Analog Dimming with External Voltage VDD VDRV Shutdown Fault Detection and Protection FAULT Status LED String Partial-Short Detect Overvoltage Protection Boost Switch Overcurrent Protection Input Overcurrent Protection and Disconnect Switch Setting the Input Current Sense Resistor Input UVLO Fault Protection During Operation Package Outline Drawing Appendix: External MOSFET Selection Guide
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