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LB1838M Folha de dados(PDF) 3 Page - Sanyo Semicon Device |
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LB1838M Folha de dados(HTML) 3 Page - Sanyo Semicon Device |
3 / 5 page LB1838M No.3949-3/5 Vcont IN OUT OUT M ID VZ VCC VS ID = VZ r ( = Constant) Block Diagram VCC OUT3 VS1 OUT4 GND Vcont GND ENA2 VS2 IN2 60k Ω 80k Ω 60k Ω 80k Ω OUT1 OUT2 ENA1 IN1 60k Ω 80k Ω 60k Ω 80k Ω Stepping Motor 10 µF Thermal shutdown Note: As long as the voltages applied to VCC, VS1, VS2, ENA1, ENA2, IN1, and IN2 are within the limits set by the absolute maximum ratings, there are no restrictions on the relationship of each voltage level in comparison with the others (regarding which is higher or lower). (ex. VCC = 3V, VS1, 2 = 2V, ENA = IN = 5V) Truth Table IN1,2 ENA1,2 OUT1,3 OUT2,4 Mode L H H L Forward H H L H Reverse L L OFF OFF Standby H L OFF OFF Standby Vcont pin As shown in the left diagram, the Vcont pin outputs the voltage of the band gap Zener VZ +VF (= 1.93V). In normal use, this pin is left open. The drive current ID is varied by the Vcont voltage. However, because the band gap Zener is shared, it functions as a bridge. |
Nº de peça semelhante - LB1838M |
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Descrição semelhante - LB1838M |
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