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A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation

A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation
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A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation - 1

Date of status change: November 1, 2008These parts 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. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. > Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon- sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. size="-1">

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A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation - 2

Features and Benefits Description > Single-chip solution for high reliability Chopper stabilization technique for precise signal response over operating range 2.0 to 4.0 V operation Sleep mode pin allowing external logic signal enable/disable to reduce average power consumption Restart feature Small package size The A1441 is a full-bridge motor driver designed to drive low-voltage bipolar brushless dc motors. Commutation of the motor is achieved by use of a single Hall element sensor to detect the position of an alternating-pole ring magnet. A high density merged Bipolar-CMOS semiconductor...

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A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation - 4

DEVICE CHARACTERISTICS over the voltage and temperature operating range, unless otherwise specifiedCharacteristicsSymbolTest ConditionsMin.Typ.Max.Units Supply VoltageV > DD Running2.04.0VTotal Output Saturation Voltage > 1 V I > LOAD = 100 mA, V > DD = 3.6 V֖500mVI > OUT(Sat) LOAD = 70 mA, V > DD = 2.2 V֖400mVSleep Mode Supply CurrentI > DD(Sleep) ֖10ALoad Current Rise Time > 2 t > r(ILOAD) V > DD = 3.6 V֖10sChopping Settling Time > 3 t > s(CHOP) ֖30s֯S ϯL ϯE ϯE ϯP Input ThresholdV > INLO ϖ0.5VV > INHI V > DD ֖0.7֖VSϯ Lϯ Eϯ Eϯ Pϯ Input CurrentI > IN ֖1ACrossover Dead Time > 4 t > DT VOUT...

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A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation - 5

2.15 1.85.085.073 A > D 1.00.0394 B > DE 1.00.0394 ATerminal #1 mark area 2.15 1.85.085.073 BExposed thermal pad (reference only, terminal #1 identifier appearance at supplier discretion) Hall element (not to scale) Preliminary dimensions, for reference only(JEDEC ultra-thin MO-229UCCD, except contact layout) Dimensions in millimeters U.S. Customary dimensions (in.) in brackets, for reference only Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A C DActive area depth 0.08 [.003]6X C...

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