PBL3770A Ericsson Microelectronics, PBL3770A Datasheet
PBL3770A
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PBL3770A Summary of contents
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Description PBL 3770A is a bipolar monolithic circuit intended to control and drive the current in one winding of a stepper motor high power version of PBL 3717 and special care has been taken to optimize the ...
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PBL 3770A Maximum Ratings Parameter Voltage Logic supply Motor supply Logic inputs Comparator input Reference input Current Motor output current Logic inputs Analog inputs Temperature Operating junction temperature Storage temperature Recommended Operating Conditions Parameter Logic supply voltage Motor supply voltage ...
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Electrical Characteristics Electrical characteristics over recommended operating conditions. C Parameter Symbol fig. General Supply current I CC Total power dissipation P D Turn-off delay t d Thermal shutdown junction temperature Logic Inputs Logic HIGH input voltage V IH Logic LOW ...
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PBL 3770A GDN GDN 4 PBL GDN GDN 5 16 3770A 15 6 GDN GDN GDN GDN ...
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Functional Description The PBL 3770A is intended to drive a bipolar constant current through one winding of a 2-phase stepper motor. Current control is achieved through switched-mode regulation, see figure 5 and 6. Three different current levels and zero current ...
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PBL 3770A voltage across the sensing resistor is below the comparator threshold level. The sinking transistor then turns on and the motor current starts to increase again, The cycle is repeated until the current is turned off via the logic ...
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V (+ Phase Phas PBL 3770A ...
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PBL 3770A Sensor resistor The R resistor should non- S inductive type power resistor. A 0.5 ohm resistor, tolerance 1 good choice for 800 mA max motor current 5V. R The peak ...