A3251ELTTR Allegro Microsystems Inc, A3251ELTTR Datasheet
A3251ELTTR
Specifications of A3251ELTTR
Related parts for A3251ELTTR
A3251ELTTR Summary of contents
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Features and Benefits ▪ Chopper stabilization for stable switchpoints throughout operating temperature range ▪ Externally programmable operate point (through VCC pin) ▪ On-board voltage regulator for 4 operation ▪ On-chip protection against: ▫ Supply transients ▫ ...
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... Selection Guide 1 Part Number Packing A3250LLT-T Bulk, 500 pieces/bag A3250LLTTR-T 7-in. reel, 1000 pieces/reel A3250LUA-T Bulk, 500 pieces/bag A3251ELTTR-T 7-in. reel, 1000 pieces/reel A3251EUA-T Bulk, 500 pieces/bag A3251LLTTR-T 7-in. reel, 1000 pieces/reel A3251LUA-T Bulk, 500 pieces/bag 1 Contact Allegro for additional packing options. ...
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A3250 and A3251 OPERATING CHARACTERISTICS valid over operating T Characteristic Symbol ELECTRICAL CHARACTERISTICS Supply Voltage 1 Output Saturation Voltage V Output Leakage Current Supply Current Output Rise Time Output Fall Time Chopping Frequency Power-Up Time Output Current Limit 1,2 I ...
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A3250 and A3251 All data are taken with A3250 devices, the average of 3 lots, 30 pieces per lot Average B vs Program Code -50 - ...
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A3250 and A3251 All data are taken with A3250 devices, the average of 3 lots, 30 pieces per lot Average B vs. Temperature hys Program Code -50 - ...
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A3250 and A3251 All data are taken with A3250 devices, the average of 3 lots, 30 pieces per lot Average I vs. Temperature CC(on -50 - (°C) A 280 260 240 ...
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A3250 and A3251 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance Power Derating Curve 1-layer PCB, Package 180 ºC/W) θJA ...
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A3250 and A3251 Chopper-Stabilized Technique The Hall sensor is based on a Hall element, a small sheet of semiconductor material in which a constant bias current flows when a constant voltage source is applied. The output takes the form of ...
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A3250 and A3251 Programming Protocol The operate switchpoint can be field-programmed so, a coded series of voltage pulses through the VCC pin is used to set bitfields in onboard registers. The effect on the device ...
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A3250 and A3251 The pulse sequences consist of the following groups of pulses enable sequence bitfield address sequence. 3. When permanently setting the bitfield, a long V ing pulse. (Note: Blown bit fuses cannot be reset.) ...
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A3250 and A3251 The first segment of code is a Enabling Addressing Mode. keying sequence used to enable the bitfield addressing mode. As shown in figure 4, this segment consists of one short V seven or more V pulses, and ...
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A3250 and A3251 For additional general application information, visit the Allegro MicroSystems Web site at www. allegromicro.com. Typical Application Circuit It is strongly recommended that an external ceramic bypass capacitor the range of 0.01 μF to 0.1 ...
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A3250 and A3251 Power Derating The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating sup- plied power or improving the heat dissipation ...
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A3250 and A3251 4.25 3.94 2X Field-Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switches Package LT, 3-Pin SOT89 4.60 .181 4.40 .173 1.83 .072 1.62 .064 1.14 .0450 NOM 2.60 .102 2.29 .090 .167 A .155 0.48 .019 0.36 .014 ...
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A3250 and A3251 .122 .117 Copyright ©2004-2008, Allegro MicroSystems, Inc. The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other ...