A2557KB Allegro Microsystems Inc, A2557KB Datasheet
A2557KB
Specifications of A2557KB
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A2557KB Summary of contents
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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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... If the fault condition is corrected, the output stage will return to its normal saturated condition. Selection Guide Part Number Pb-free A2557EB-T* Yes A2557EEBTR-T* Yes A2557ELBTR-T* Yes A2557KB* – A2557KB-T* Yes A2557KEBTR-T* Yes A2557KLBTR* – A2557KLBTR-T Yes A2557SB-T* Yes A2557SEBTR-T* Yes A2557SLBTR-T* Yes *Variant is in production but has been determined to be LAST TIME BUY ...
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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 GROUND GROUND with Fault Detection and Sleep Mode Pin-out Diagrams EB (PLCC) Package (DIP) and LB (SOIC) Packages IN OUT ...
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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 19.05±0. 1.27 MIN +0.25 1.52 –0.38 0.46 ±0.12 with Fault Detection and Sleep Mode B Package, 16-pin DIP with internally fused pins 4, 5, 12, and 13 and external thermal tabs +0.76 +0.38 6.35 10.92 ...
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A2557 with internally fused pins 5 through 11 and 19 through 25 12.45±0.13 11.51±0.08 0.74 ±0.08 28X 0.10 0.43 ±0.10 A Terminal #1 mark area with Fault Detection and Sleep Mode EB Package, 28-pin PLCC 12.45±0.13 11.51±0. ...
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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 ...