A3964SLB Allegro Microsystems Inc, A3964SLB Datasheet
A3964SLB
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A3964SLB Summary of contents
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Discontinued Product This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: November 1, 2010 Recommended Substitutions: For existing customer transition, and for new ...
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Features and Benefits ▪ ±800 mA continuous output current rating ▪ output voltage rating ▪ Internal PWM current control, saturated sink drivers ▪ Internally generated, precision 2.5 V reference ▪ Internal transient-suppression diodes ▪ Internal thermal-shutdown circuitry ▪ ...
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... ENABLE input, when held high, disables the output drivers. Special power-up sequencing is not required. Internal circuit protection includes thermal shutdown with hysteresis, transient- suppression diodes, and crossover-current protection. Selection Guide Part Number A3964SLBTR-T 20-pin SOIC with internally fused pins Absolute Maximum Ratings Characteristic Symbol Load Supply Voltage ...
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A3964 ELECTRICAL CHARACTERISTICS kΩ and 1000 Ground (unless noted otherwise) S Characteristic Output Drivers Load Supply Voltage Range Output Sustaining Voltage Output Leakage Current Output Saturation Voltage Clamp Diode Forward ...
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A3964 ELECTRICAL CHARACTERISTICS (continued kΩ and 1000 Ground (unless noted otherwise) SENSE Characteristic Control Logic Logic Supply Voltage Range Logic Input Voltage Logic Input Current Reference Output Voltage V Reference ...
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A3964 The A3964 contain a fi xed Internal PWM Current Control. off-time, pulse width modulated (PWM) current-control circuit that can be used to limit the load current to a desired value. The peak value of the current limiting (I TRIP ...
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A3964 The following procedure can be used to evaluate the worst case internal PWM load current regulation in the system: set volts. With the load connected and the PWM current control operating in slow decay mode, use ...
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A3964 The thermal performance in applications that run at high load currents and/or high duty cycles can be improved by adding external diodes from each output to ground in parallel with the internal diodes. Fast-recovery (≤ 200 ns) diodes should ...