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STK672-120-SL-E Dataheets PDF



Part Number STK672-120-SL-E
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description 2-phase Stepping Motor Driver
Datasheet STK672-120-SL-E DatasheetSTK672-120-SL-E Datasheet (PDF)

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 i.

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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 Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Allowable Operating Ranges at Ta=25°C Parameter Operating supply voltage 1 Operating supply voltage 2 Input high voltage Output current 1 Output current 2 CLOCK frequency Phase driver withstand voltage Symbol VCC VDD VIH IOH1 IOH2 fCL VDSS Conditions With signals applied With signals applied Pin 8, 9, 10, 11 and 12 Tc=105°C, CLOCK≥200Hz Tc=80°C, CLOCK≥200Hz, See the motor current (IOH) derating curve Minimum pulse width: 20μs ID=1mA (Tc=25°C) Electrical Characteristics at Tc=25°C, VCC=24V, VDD=5.0V Parameter Symbol Conditions VDD supply current Output average current ICCO Ioave CLOCK=GND With R/L = 3Ω/3.8mH in each phase Vref = 0.176V FET diode forward voltage Output saturation voltage High-level input voltage Low-level input voltage Input current Vref input voltage Vdf Vsat VIH VIL IIL VrH If=1A (RL=23Ω) RL=23Ω Pins 6 to 9 (4 pins) Pins 6 to 9 (4 pins) With pins 6 to 9 at the ground level. Pull-up resistance: 40kΩ (typical) Pin 12 Vref input bias current IIB With pin 12 at 1V Notes: A fixed-voltage power supply must be used. min 0.56 4.0 62 0 Ratings 10 to 42 5±5% 0 to VDD 2.4 3.0 0 to 25 100min unit V V V A A kHz V typ 2.6 0.62 1.1 0.4 125 50 max 6 0.69 1.7 0.56 1.0 250 3.5 500 unit mA A V V V V μA V nA No. A2140-2/11 Package Dimensions unit:mm (typ) 46.6 41.2 STK672-120-SL-E 8.5 12.7 25.5 18.9 3.6 1 2.0 12 0.5 (9.6) 11 2=22 0.4 7.4 5.2 Figure 1 Derating Curve of Motor Current, IOH, vs. STK672-120-SL-E Operating Substrate Temperature, Tc Motor current, IOH -- A IOH -- Tc 4.5 Operating region when fCL≥200Hz 4.0 3.5 VCC=24V Motor: R=0.4Ω L=1.2mH 3.0 2.5 Operating region in hold mode 2.0 2.4 2.0 1.5 1.0 0.5 0 0 20 40 60 80 100 105 120 Operating substrate temperature, Tc -- °C Notes • The current range given above represents conditions when output voltage is not in the avalanche state. • Tc must measure surface metal temperature on rear side center of this device. No. A2140-3/11 Block Diagram STK672-120-SL-E VDD 10 MODE 8 CLOCK 9 CWB 7 RESETB 6 Excitation mode selection Phase advance counter Off time setting Vref 12 SP 11 Phase excitation signal generation Chopping circuit A AB 54 F1 F2 B BB 32 F3 F4 + - VrefA R1 C1 RsA R2 + - VrefB C2 RsB 1 GND SUB Sample Application Circuit VDD=5V CLOCK MODE CWB 5V RO3 D1 + CO4 10μF STK672-120-SL-E 10μF CO3 + 10 9 8 7 5A 4 AB Two-phase stepping motor RESETB 5V 6 3B BB 2 RO1 Vref RO2 0.1μF CO1 12 11 GND 1 VCC 24V + CO2 At least 100μF P.GND No. A2140-4/11 STK672-120-SL-E Precautions • To minimize noise in the 5V system, locate the ground side of capacitor CO2 in the above circuit as close as possibleto pin 1 of the IC. • Insert resistor RO3 (47 to 100Ω) so that the discharge energy from capacitor CO4 is not directly applied to the CMOS-IC in this hybrid device. If the diode D1 has Vf characteristics with .


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