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L6208 Datasheet(PDF) 1 Page - STMicroelectronics |
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L6208 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 27 page  1/27 L6208 September 2003 s OPERATING SUPPLY VOLTAGE FROM 8 TO 52V s 5.6A OUTPUT PEAK CURRENT (2.8A RMS) s RDS(ON) 0.3Ω TYP. VALUE @ Tj = 25°C s OPERATING FREQUENCY UP TO 100KHz s NON DISSIPATIVE OVERCURRENT PROTECTION s DUAL INDEPENDENT CONSTANT tOFF PWM CURRENT CONTROLLERS s FAST/SLOW DECAY MODE SELECTION s FAST DECAY QUASI-SYNCHRONOUS RECTIFICATION s DECODING LOGIC FOR STEPPER MOTOR FULL AND HALF STEP DRIVE s CROSS CONDUCTION PROTECTION s THERMAL SHUTDOWN s UNDER VOLTAGE LOCKOUT s INTEGRATED FAST FREE WHEELING DIODES TYPICAL APPLICATIONS s BIPOLAR STEPPER MOTOR DESCRIPTION The L6208 is a DMOS Fully Integrated Stepper Motor Driver with non-dissipative Overcurrent Protection, realized in MultiPower-BCD technology, which com- bines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device in- cludes all the circuitry needed to drive a two-phase bipolar stepper motor including: a dual DMOS Full Bridge, the constant off time PWM Current Controller that performs the chopping regulation and the Phase Sequence Generator, that generates the stepping sequence. Available in PowerDIP24 (20+2+2), PowerSO36 and SO24 (20+2+2) packages, the L6208 features a non-dissipative overcurrent protec- tion on the high side Power MOSFETs and thermal shutdown. BLOCK DIAGRAM GATE LOGIC STEPPING SEQUENCE GENERATION OVER CURRENT DETECTION OVER CURRENT DETECTION GATE LOGIC VCP VBOOT EN CONTROL CW/CCW VREFA VBOOT 5V 10V VSA VSB OUT1A OUT2A OUT1B OUT2B SENSEA CHARGE PUMP VOLTAGE REGULATOR ONE SHOT MONOSTABLE MASKING TIME THERMAL PROTECTION VBOOT VBOOT OCDB OCDA 10V 10V BRIDGE A SENSE COMPARATOR BRIDGE B D01IN1225 RCA + - SENSEB VREFB RCB HALF/FULL CLOCK RESET PWM ORDERING NUMBERS: L6208N (PowerDIP24) L6208PD (PowerSO36) L6208D (SO24) PowerDIP24 (20+2+2) PowerSO36 SO24 (20+2+2) DMOS DRIVER FOR BIPOLAR STEPPER MOTOR |
Número de pieza similar - L6208 |
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Descripción similar - L6208 |
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