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L6234 Arkusz danych(PDF) 1 Page - STMicroelectronics |
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L6234 Arkusz danych(HTML) 1 Page - STMicroelectronics |
1 / 10 page L6234 THREE PHASE MOTOR DRIVER SUPPLY VOLTAGE FROM 7 TO 52V 5A PEAK CURRENT RDS ON 0.3 Ω TYP. VALUE AT 25°C CROSS CONDUCTION PROTECTION TTL COMPATIBLE DRIVER OPERATING FREQUENCY TO 50KHz THERMAL SHUTDOWN INTRINSIC FAST FREE WHEELING DIODES INPUT AND ENABLE FUNCTION FOR EVERY HALF BRIDGE 10V EXTERNAL REFERENCE AVAILABLE DESCRIPTION The L6234 is a triple half bridge to drive a brushless motor. It is realized in Multipower BCD technology which combines isolated DMOS power transistors with CMOS and Bipolar circuits on the same chip. By using mixed technology it has been possible to optimize the logic circuitry and the power stage to achieve the best possible performance. The output DMOS transistors can sustain a very high current due to the fact that the DMOS struc- ture is not affected by the second breakdown ef- fect, the RMS maximum current is practically lim- ited by the dissipation capability of the package. All the logic inputs are TTL, CMOS and µP com- patible. Each channel is controlled by two sepa- rate logic input. L6234 is available in 20 pin POWER DIP package (16+2+2) and in PowerSO20. March 1998 PIN CONNECTION (Top view) ORDERING NUMBERS: L6234 (POWER DIP 16+2+2) L6234PD (PowerSO20) PowerSO20 POWER DIP (16+2+2) OUT1 IN1 EN1 VS GND V S GND EN3 IN3 1 3 2 4 5 6 7 8 9 VCP VBOOT SENSE2 GND GND SENSE1 EN2 IN2 OUT2 20 19 18 17 16 14 15 13 12 D98IN848 OUT3 10 VREF 11 POWER DIP (16+2+2) GND SENSE1 EN2 IN2 OUT2 IN1 OUT1 EN1 VS VS EN3 IN3 VREF OUT3 Vcp VBOOT SENSE2 GND 1 3 2 4 5 6 7 8 9 18 17 16 15 14 12 13 11 19 10 20 GND GND D94IN129A PowerSO20 1/10 |
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