A4954ELPTR-T Allegro Microsystems Inc, A4954ELPTR-T Datasheet
A4954ELPTR-T
Specifications of A4954ELPTR-T
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A4954ELPTR-T Summary of contents
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Features and Benefits • Low R outputs DS(on) • Overcurrent protection (OCP) ▫ Motor short protection ▫ Motor lead short to ground protection ▫ Motor lead short to battery protection • Low Power Standby mode • Adjustable PWM current limit ...
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... A4954 Selection Guide Part Number A4954ELPTR-T 4000 pieces per 13-in. reel A4954ELP-T 96 pieces per tube Absolute Maximum Ratings Characteristic Load Supply Voltage Logic Input Voltage Range V Input Voltage Range REF Sense Voltage (LSSx pin) Motor Outputs Voltage Output Current Peak Output Current ...
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A4954 ELECTRICAL CHARACTERISTICS Characteristics General Load Supply Voltage Range R Sink + Source Total DS(on) Load Supply Current Body Diode Forward Voltage Logic Inputs Logic Input Voltage Range V Logic Input Current Logic Input Pull-Down Resistance R RR Input Hysteresis ...
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A4954 PWM Control Timing Diagram V IN1, IN3 V V IN2, IN4 V +I REG I –I , OUT1 OUT3 –I OUT2 OUT4 –I REG PWM Control Truth Table IN1, IN3 IN2, IN4 10× ...
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A4954 Device Operation The A4954 is designed to operate two DC motors. The output drivers are all low-R , N-channel DMOS drivers that feature DS(on) internal synchronous rectification to reduce power dissipation. The current in each of the two output ...
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A4954 Synchronous Rectification When a PWM off-cycle is triggered by an internal fixed off-time cycle, load current will recirculate. The A4954 synchronous rec- tification feature turns-on the appropriate DMOSFETs during the current decay, and effectively shorts out the body diodes ...
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A4954 Sense Pins (LSSx) In order to use PWM current control, a low-value resistor is placed between the LSSx pin and ground for current sensing pur- poses. To minimize ground-trace IR drops in sensing the output current level, the current ...
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A4954 5.00±0. NOM 16X 0.10 C 0.30 0.19 0.65 BSC Copyright ©2010-2011, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail ...