TEA3717DP

TEA3717 STEPPER MOTOR DRIVER . . . . . . . HALF-STEP AND FULL-STEP MODE BIPOLAR DRIVE OF STEPPER MOTOR FOR MAXIMUM MOTOR PERFORMANCE BUILT-IN PROTECTION DIODES WIDE RANGE OF CURRENT CONTROL 5 TO 1000 mA WIDE VOLTAGE RANGE 10 TO 45 V DESIGNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE CURRENT LEVELS CAN BE SELECTED IN STEPS OR VARIED CONTINUOUSLY POWERDIP 12 + 2 + 2 DESCRIPTION The TEA3717 is a bipolar monolithic integrated circuit intended to control and drive the current in one winding of a bipolar stepper motor. The circuit consists of an LS-TTL compatible logic input, a current sensor, a monostable and an outputstage with builtin protection diodes. Two TEA3717 and a few external components form a complete control and drive unit for LS-TTL or microprocessor-controlled stepper motor systems. PIN CONNECTION (top view) ORDER CODE : TEA3717DP April 1993 1/8 TEA3717 SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Vmm VCC Vin Vin VV Iin Iin IO Tj Tstg Toper Parameter Power Supply Voltage (pins 14, 3) Logic Supply Voltage (pin 6) Input Voltage Logic Inputs Analog Inputs Reference Input Input Current Logic Inputs Analog Inputs Output Current Junction Temperature Storage Temperature Range Operating Ambiant Temperature Range Value 45 7 – 0.5 to 6 VCC 15 mA – 10 – 10 ±1 + 150 – 55 to + 150 0 to + 70 Unit V V V A °C °C °C THERMAL DATA Symbol Rth (j-c) Rth (j-a) Parameter Maximum Junction-pins Thermal Resistance Maximum Junction-ambient Thermal Resistance Value 11 45* Unit °C/W °...