A1442 ALLEGRO [Allegro MicroSystems], A1442 Datasheet
A1442
Related parts for A1442
A1442 Summary of contents
Page 1
... Hall Element A1442-DSS Description The A1442 is a full-bridge motor driver designed to drive low-voltage, brushless dc motors. Commutation of the motor is achieved by use of a single Hall element sensor to detect the rotational position of an alternating-pole ring magnet. A high- density CMOS semiconductor process allows the integration of all the necessary electronics ...
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... A1442 Selection Guide Part Number A1442EEWLT-P MLP/DFN 1.5 mm × 2 mm, 0.4 mm maximum overall height *Contact Allegro for additional packing options Absolute Maximum Ratings Characteristic Forward Supply Voltage Reverse Supply Voltage Output Voltage Reverse Output Voltage ¯ S ¯ ¯ L ¯ ¯ E ¯ ¯ E ¯ ¯ P ¯ Input Voltage ...
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... A1442 OPERATING CHARACTERISTICS valid over the full V Characteristic Supply Voltage 1 Supply Current 2,3 Total Output On Resistance Reverse Battery Current Sleep Input Threshold Sleep Input Current Reverse Sleep Current 4 Restart Delay Hall Chopping Settling Time 2 Magnetic Switchpoints Output Polarity 1 A bypass capacitor of 0.1 μF is required between VDD and GND for proper device operation through the full specified voltage range. ...
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... A1442 Soft Switching The A1442 device includes a soft-switch- ing algorithm that controls the output switching slew rate for both output pins result the A1442 device is ideal for use in applications requiring low audible switching noise and low EMI interference. Sleep Mode The S ¯ ¯ L ¯ ¯ E ¯ ¯ E ¯ ¯ P ¯ pin accepts an external signal that enables sleep mode ...
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... No external diode is required for reverse battery protection because the protection is fully integrated into the IC. • Thermal shutdown is integrated also. Figure 4. Application circuit showing user-controlled sleep/enable mode, while the A1442 remains powered at all times System Logic Figure 4. Application circuit showing simultaneous user control of power supply and sleep mode. ...
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... For a load of 30 Ω, given common conditions such as 250 °C/W, then: A worst-case estimate, P able power level, without exceeding T and BATT I DD VDD C A1442 BYP System Logic 0.1 μF Control SLEEP I/O NC with Hall Commutation and Soft-Switching × Δ ...
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... A1442 1.50 0.892 [.0351 0. 0.325 1.10 Low Voltage Full Bridge Brushless DC Motor Driver with Hall Commutation and Soft-Switching, and Reverse Battery, Short Circuit, and Thermal Shutdown Protection Package EW, 6 pin MLP/DFN E D 0.50 0.15 E 0.993 [.0391] 2.00 0.325 SEATING PLANE 0.38 0.25 All dimensions nominal, not for tooling use (similar to JEDEC Type 1, MO-229” ...
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... A1442 Round Sprocket Holes Reel Label ⇒ Unreel Direction • Embossed tape and reel • Terminals inward • 3000 pieces per 7 in. reel • Pin 1 on leading device edge, • 40 min. trailer pockets sprocket hole side • 40 min. leader pockets Leader pockets are the first off the reel when the tape is unreeled for dispensing devices ...