Search Check Stock Contact Sales English Home Products Regulators and Lighting LED Drivers for Lighting A6217 A6217 and A6217-1: Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver DATASHEETS The A6217 is a single IC switching regulator that provides constant-current output to drive high-power LEDs. It integrates a high-side N-channel DMOS switch for DC-to-DC step- down (buck) conversion. A true average current is output using a cycle-by-cycle, controlled on-time method. SAMPLE & BUY Output current is user-selectable by an external current sense resistor. Output voltage is automatically adjusted to drive various numbers of LEDs in a single string. This ensures the optimal system efficiency. LED dimming is accomplished by a direct logic input pulsewidth-modulation (PWM) signal at the enable pin. The device is provided in a 3 mm x 3 mm wettable flank 10-pin DFN (suffix EJ) or an 8-pin narrow SOIC (suffix LJ), both with exposed pad for enhanced thermal dissipation. Both packages are lead (Pb) free, with 100% matte-tin leadframe plating. A6217 Datasheet Westmark Electronics (Allegro & Sanken Semiconductors, Sanken Power Supplies) 8705 SW Nimbus Ave, Suite - 320 Beaverton, OR 97008 Phone: (503)641-8780 Fax: (503)641-8738 Web: www.westmarkco.com Dianne Seymour, inside sales, Email: sales@westmarkco.com APPLICATIONS: If this is not your local representative, find your local sales rep here. Automotive lighting Daytime running lights RECEIVE PRODUCT ALERTS Front and rear fog lights We'll notify you when there are updates to this product. Sign Up Turn/stop lights Map light Dimmable interior lights A6217 Product Image AEC-Q100 qualified 6 to 48 V supply voltage True average output current control 3 A maximum output over operating temperature range (1.5 A for A6217-1) Cycle-by-cycle current limit Integrated MOSFET switch Click the image to view larger Enable / PWM dimming via direct logic input or power supply voltage 1 1 Internal control loop compensation 2 2 3 3 Undervoltage lockout (UVLO) and thermal shutdown protection Low power shutdown (1 A typical) Robust protection against: Adjacent pin-to-pin short Pin-to-GND short Component open/short faults Enhancements over A6213: Dithering of switching frequency to reduce EMI Able to drive single white LED from 18 V supply at 2.2 MHz Smaller package option Part Number Specifications and Availability Part Number Package Type Temperature RoHS Compliant Part Composition / RoHS Data Samples Check Distributor Stock A6217KEJTR-1-J n/a -20C to 85C Yes View Data Contact your local sales rep Check Stock A6217KEJTR-J n/a -20C to 85C Yes View Data Contact your local sales rep Check Stock APEK6217KEJ-01-MH-0 DEMO BOARD -20C to 85C No -- Contact your local sales rep Check Stock APEK6217KEJ-01-MH-01 DEMO BOARD -20C to 85C No -- Contact your local sales rep Check Stock Comments Part Number Specifications and Availability Part Number Package Type Temperature RoHS Compliant Part Composition / RoHS Data Samples Check Distributor Stock APEK6217KLJ-01-MH DEMO BOARD -20C to 85C No -- Contact your local sales rep Check Stock APEK6217KLJ-01-MH-01 DEMO BOARD -20C to 85C No -- Contact your local sales rep Check Stock A6217KLJTR-1-T 8-lead SOIC -40C to 125C Yes View Data Contact your local sales rep Check Stock A6217KLJTR-T 8-lead SOIC -40C to 125C Yes View Data Contact your local sales rep Check Stock Comments 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. Copyright (c) 2018 Allegro MicroSystems, LLC Sitemap | Privacy Policy | Contact Webmaster Follow us on: Careers | Contact Sales | Home | Legal | Quality & Environment | Request Samples