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A3251ELTTR-T Datasheet(PDF) 2 Page - Allegro MicroSystems |
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A3251ELTTR-T Datasheet(HTML) 2 Page - Allegro MicroSystems |
2 / 15 page Field-Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switches A3250 and A3251 2 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com Selection Guide Part Number Pb-free1 Packing2 Package TA (ºC) VOUT Power-On Running3 A3250ELT-T Yes Bulk, 500 pieces/bag Surface mount –40 to 85 High Low A3250ELTTR-T Yes 7-in. reel, 1000 pieces/reel A3250EUA-T Yes Bulk, 500 pieces/bag SIP through hole A3250LLT-T Yes Bulk, 500 pieces/bag Surface mount –40 to 150 High Low A3250LLTTR-T Yes 7-in. reel, 1000 pieces/reel A3250LUA-T Yes Bulk, 500 pieces/bag SIP through hole A3251ELT-T Yes Bulk, 500 pieces/bag Surface mount –40 to 85 Low High A3251ELTTR-T Yes 7-in. reel, 1000 pieces/reel A3251EUA-T Yes Bulk, 500 pieces/bag SIP through hole A3251LLT-T Yes Bulk, 500 pieces/bag Surface mount –40 to 150 Low High A3251LLTTR-T Yes 7-in. reel, 1000 pieces/reel A3251LUA-T Yes Bulk, 500 pieces/bag SIP through hole 1Pb-based variants are being phased out of the product line. a. Certain variants cited in this footnote are in production but have been determined to be LAST TIME BUY. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Status change: October 31, 2006. Deadlilne for receipt of LAST TIME BUY ORDERS: April 27, 2007. These variants include: A3250ELT, A3250ELTTR, A3250EUA, A3251ELT, A3251ELTTR, A3251EUA, A3251LLT, A3251LLTTR, and A3251LUA. b. Certain variants cited in this footnote are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Status change: May 1, 2006. These variants include: A3250LLT, A3250LLTTR, A3250LUA. 2Contact Allegro for additional packing options. 3In south polarity magnetic field of sufficient strength. field drops below the magnetic release point, BRP. The output of the A3251 has the opposite polarity, switching HIGH in a south- polarity magnetic field that BOP, and switching LOW when the field drops below BRP. The other differences in the devices are the power-on state. The A3250 powers-on in the HIGH state, while the A3251 powers-on in the LOW state. Three package styles provide a magnetically optimized package for most applications. Type LT is a miniature SOT89/TO-243AA surface mount package that is thermally enhanced with an exposed ground tab, and type UA is a three-lead ultramini SIP for through-hole mounting. The packages are lead (Pb) free, with 100% matte tin plated leadframes (suffix, –T). Description (continued) Absolute Maximum Ratings Characteristic Symbol Notes Rating Units Supply Voltage VCC 26.5 V Reverse Supply Voltage VRCC –18 V Zener Overvoltage VZ 30 V Output Current IOUT 20 mA Magnetic Flux Density B Unlimited G Operating Ambient Temperature TA Range E –40 to 85 ºC Range L –40 to 150 ºC Maximum Junction Temperature TJ(max) 165 ºC Storage Temperature Tstg –65 to 170 ºC |
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