Overview
The STK672-110-SL-E is a hybrid IC for use as a unipolar, 2-phase stepping motor driver with PWM current control.
Features
⢠The motor speed can be controlled by the frequency of an external clock signal
(the CLOCK pin signal).
⢠The excitation type is switched according to the state (low or high) of the MODE pin.
The mode is set to 2-phase or
1-2phase excitation on the rising edge of the clock signal.
⢠A motor direction switching pin (the CWB pin) is provided.
⢠All inputs are schmitt inputs and 40kΩ (typical: â50 to +100%) pull-up resistors are built in.
⢠The motor current can be set by changing the Vref pin voltage. Since a 0.22Ω current
detection resistor is built in, a current of 1A is set for each 0.22V of applied voltage.
⢠The input frequency range for the clock signal used for motor speed control is 0 to 25kHz.
⢠Supply voltage ranges: VCC = 10 to 42V, VDD = 5.0V ±5%
⢠This IC supports motor operating currents of up to 1.8A
at Tc = 105°C, and of up to 2.65A at Tc = 25°C.
Applications
⢠Office photocopiers, printers, etc.
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