A2557SLB Allegro Microsystems Inc, A2557SLB Datasheet
A2557SLB
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A2557SLB Summary of contents
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Protected Quad Driver with Fault Detection and Sleep Mode These parts are in production but have been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device ...
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Features and Benefits ▪ 300 mA output current per channel ▪ Independent overcurrent protection and thermal limiting for each driver ▪ Output voltage ▪ Output SOA protection ▪ Fault-detection circuitry for open or shorted load ▪ Low ...
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A2557 Description (continued) Continuous or multiple overload conditions causing the channel temperature to reach approximately 165°C will result in an additional linear decrease in the output current of the affected driver. If the fault condition is corrected, the output stage ...
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A2557 Absolute Maximum Ratings Characteristic Logic Supply Voltage Input Voltage Output Voltage Overcurrent Protected Output Voltage Output Current FAULT Output Voltage Package Power Dissipation Operating Ambient Temperature Maximum Junction Temperature Storage Temperature with Fault Detection and Sleep Mode Symbol V ...
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A2557 with Fault Detection and Sleep Mode Pin-out Diagram LB Package IN OUT ENABLE 14 OUT 3 2 GROUND GROUND 4 13 GROUND GROUND 5 12 OUT FAULT IN ...
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A2557 ELECTRICAL CHARACTERISTICS over operating temperature range, V Characteristic Symbol Output Leakage Current* Output Sustaining Voltage Output Saturation Voltage Over-Current Limit Input Voltage Input Current Fault Output Leakage Current Fault Output Current Fault Output Saturation Voltage V Clamp Diode Forward ...
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A2557 0 0.2 0 100 200 OUTPUT CURRENT IN MILLIAMPERES 100 200 OUTPUT CURRENT IN MILLIAMPERES with Fault Detection and Sleep Mode TYPICAL OPERATING CHARACTERISTICS 600 500 400 ...
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A2557 CIRCUIT DESCRIPTION AND APPLICATION The A2557 low-current quad power drivers provide protected output driver functions, combined with a fault diagnostic scheme, plus an automatic low-current Sleep-Mode function. These de- vices monitor their outputs for fault (open or shorted) conditions. ...
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A2557 CIRCUIT DESCRIPTION AND APPLICATION (continued) NORMAL LAMP IN-RUSH CURRENT THERMAL GRADIENT SENSING CURRENT LIMIT I TRIP 0 TIME Inductive load driver Bifi lar (unipolar) stepper motors (and other inductive loads) can be driven directly. The internal diodes prevent damage ...
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A2557 CIRCUIT DESCRIPTION AND APPLICATION (continued) IN FAULT (SHORTED LOAD) FAULT (OPEN LOAD) Under some conditions it is possible to get spurious glitches on the FAULT output at load turn-on and turn-off transitions: • Light load turn-off. Under light loading ...
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A2557 with internally fused pins 4 and 5, and 12 and 13 10.30±0. 16X 0.10 C 1.27 0.41 ±0.10 For Reference Only Pins 4 and 5, and 12 and 13 internally fused Dimensions in millimeters (reference ...