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L6235PD Datasheet(PDF) 1 Page - STMicroelectronics |
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L6235PD Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 25 page  1/25 L6235 September 2003 s OPERATING SUPPLY VOLTAGE FROM 8 TO 52V s 5.6A OUTPUT PEAK CURRENT (2.8A DC) s RDS(ON) 0.3Ω TYP. VALUE @ Tj = 25 °C s OPERATING FREQUENCY UP TO 100KHz s NON DISSIPATIVE OVERCURRENT DETECTION AND PROTECTION s DIAGNOSTIC OUTPUT s CONSTANT tOFF PWM CURRENT CONTROLLER s SLOW DECAY SYNCHR. RECTIFICATION s 60° & 120° HALL EFFECT DECODING LOGIC s BRAKE FUNCTION s TACHO OUTPUT FOR SPEED LOOP s CROSS CONDUCTION PROTECTION s THERMAL SHUTDOWN s UNDERVOLTAGE LOCKOUT s INTEGRATED FAST FREEWEELING DIODES DESCRIPTION The L6235 is a DMOS Fully Integrated Three-Phase Motor Driver with Overcurrent Protection. Realized in MultiPower-BCD technology, the device combines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a three-phase BLDC motor including: a three-phase DMOS Bridge, a constant off time PWM Current Con- troller and the decoding logic for single ended hall sensors that generates the required sequence for the power stage. Available in PowerDIP24 (20+2+2), PowerSO36 and SO24 (20+2+2) packages, the L6235 features a non- dissipative overcurrent protection on the high side Power MOSFETs and thermal shutdown. BLOCK DIAGRAM CHARGE PUMP VOLTAGE REGULATOR HALL-EFFECT SENSORS DECODING LOGIC THERMAL PROTECTION TACHO MONOSTABLE OCD1 OCD OCD OCD2 10V 5V VCP VSA GATE LOGIC VBOOT VBOOT OUT1 OUT2 SENSEA VSB OUT3 SENSEB DIAG EN FWD/REV BRAKE H3 H1 RCPULSE D99IN1095B TACHO RCOFF H2 OCD3 ONE SHOT MONOSTABLE MASKING TIME VBOOT OCD1 10V VBOOT OCD2 10V VBOOT OCD3 10V SENSE COMPARATOR + - PWM VREF ORDERING NUMBERS: L6235N L6235PD L6235D PowerDIP24 (20+2+2) PowerSO36 SO24 (20+2+2) DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
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