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L6234 Datasheet(PDF) 5 Page - STMicroelectronics |
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L6234 Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 10 page ELECTRICAL CHARACTERISTICS (Vs = 42V ; Tj = 25°C unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit VS Supply Voltage 7 52 V Vref Reference Voltage 10 V IS Quiescent Supply Current 6.5 mA TS Thermal Shutdown 150 °C TD Dead Time Protection 300 ns OUTPUT DMOS TRANSISTOR Symbol Parameter Test Condition Min. Typ. Max. Unit IDSS Leakage Current 1mA RDS (ON) ON Resistance 0.3 Ω SOURCE DRAIN DIODE Symbol Parameter Test Condition Min. Typ. Max. Unit VSD Forward ON Voltage ISD = 4A; EN = LOW 1.2 V TRR Reverse Recovery Time IF = 4A 900 ns Tpr Forward Recovery Time 200 ns LOGIC LEVELS Symbol Parameter Test Condition Min. Typ. Max. Unit VINL, VENL Input LOW Voltage -0.3 0.8 V VINH, VENH Input HIGH Voltage 27 V IINL, IENL Input LOW Current VIN,VEN = L -10 µA IINH, IENH Input HIGH Current VIN,VEN = H 30 µA CIRCUIT DESCRIPTION L6234 is a triple half bridge designed to drive brushless DC motors. Each half bridge has 2 power DMOS transistors with RdsON = 0.3 Ω. The 3 half bridges can be controlled independently by means of the 3 inputs IN1, IN2, IN3 and the 3 inputs EN1, EN2, and EN3. An external connection to the 3 common low side DMOS sources is provided to connect a sensing resistor for constant current chopping ap- plication. The driving stage and the logic stage are de- signed to work from 7V to 52V. L6234 5/10 |
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