2-phase Stepping Motor Driver
Description
Ordering number : ENA2140
STK672-120-SL-E
Thick-Film Hybrid IC
2-phase Stepping Motor Driver
http://onsemi.
com
Overview
The STK672-120-SL-E is a hybrid IC for use as a unipolar, 2-phase stepping motor driver with PWM current control.
Applications
• Office photocopiers, printers, etc.
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: –50 to +100%) pull-up resistors are built in.
• The motor current can be set by changing the Vref pin voltage.
Since a 0.
165Ω current detection resistor is built in, a
current of 1A is set for each 0.
165V 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 2.
4A at Tc = 105°C, and of up to 4.
0A at Tc = 25°C.
Semiconductor Components Industries, LLC, 2013 June, 2013
O1712HKPC 5-6407 No.
A2140-1/11
STK672-120-SL-E
Specifications
Absolute Maximum Ratings at Tc = 25°C
Parameter Maximum supply voltage 1 Maximum supply voltage 2 Input voltage Output current Repeated avalanche capacity Allowable power dissipation Operating substrate temperature Junction temperature Storage temperature
Symbol VCC max VDD max VIN max IOH max Ear max
Pd max
Tc max
Tj max
Tstg
Conditions No signal No signal Logic input pins 10μA 1 pulse (resistance load)
With an arbitrarily large heat sink.
Per MOSFET
Ratings 52
-0.
3 to +7.
0 -0.
3 to +7.
0
4 36 8.
5 105 150 -40 to +125
unit V V V A mJ W °C °C °C
Stresses exceeding Maximum Ratings may damage the device.
Maximum Ratings are stress ratings only.
Functional operation above the Recommended Operat...
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