TLE4726GXUMA1 Infineon

2-Phase Stepper-Motor Driver TLE4726G Bipolar IC Overview Features 2 0.75 A / 50 V outputs Integrated driver, control logic and current control (chopper) Fast free-wheeling diodes Low standby-current drain PG-DSO-24-13 Full, half, quarter, mini step Type Ordering Code Package TLE4726G On Request PG-DSO-24-13 Description TLE4726G is a bipolar, monolithic IC for driving bipolar stepper motors, DC motors and otherinductive loads that operate on constant current. The control logic and power outputstages for two bipolar windings are integrated on a single chip which permits switched current control of motors with 0.75 A per phase at operating voltages up to 50 V. The direction and value of current are programmed for each phase via separate control inputs. A common oscillator generates the timing for the current control and turn-on with phase offset of the two output stages. The two output stages in a full-bridge configuration haveintegrated, fast free-wheeling diodes and are free of crossover current. The logic is supplied either separately with 5 V or taken from the motor supply voltage by way of aseriesresistor and an integrated Z-diode. The device can be driven directly by a microprocessor with the possibility of all modes from full step through half step to mini step. Data Sheet 1 Rev. 1.1, 2008-06-16TLE4726G 10 1 24 20 11 2 23 21 Phase 1 3 22 Phase 2 OSC 4 21 Inhibit GND 5 20 GND GND 6 19 GND GND 7 18 GND GND 8 17 GND Q11 9 16 Q21 R 10 15 R 1 2 ++V 11 14 V S L Q12 12 13 Q22 IEP00898 Figure 1 Pin Configuration (top view) Data Sheet 2 Rev. 1.1, 2008-06-16