A3251LUA-T Allegro Microsystems Inc, A3251LUA-T Datasheet
A3251LUA-T
Specifications of A3251LUA-T
Related parts for A3251LUA-T
A3251LUA-T 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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... Three package styles provide a magnetically optimized package Selection Guide Part Number Packing A3250LLTTR-T 7-in. reel, 1000 pieces/reel 3 A3251LUA-T Bulk, 500 pieces/bag 1 Contact Allegro for additional packing options south polarity magnetic field of sufficient strength. 3 Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the variant is obsolete and notice has been given ...
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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 circuit 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 +0.15 2.45 +0.15 –0.16 4.10 –0.16 1 0.42±0.06 0.50±0.06 For Reference Only; not for tooling use (reference JEDEC. TO-243AA) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration ...
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A3250 and A3251 4.09 45° +0.08 3.02 –0.05 2.16 MAX 0.51 REF 1 2 15.75 ±0.51 +0.05 0.43 –0.07 Copyright ©2004-2009, Allegro MicroSystems, Inc. The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; ...