Driver Motoro Pap

Ordering number : ENN6507

Thick-Film Hybrid IC

STK672-080
Stepping Motor Driver (Sine Wave Drive) Output Current: 2.8 A (No Heat Sink*)
Unipolar constant-current chopper (external excitation PWM) circuit with built-in microstepping controller

Overview
The STK672-080 is a stepping motor driver hybrid IC that uses power MOSFETs in the output stage. It includes a built-in microsteppingcontroller and is based on a unipolar constant-current PWM system. The STK672-080 supports application simplification and standardization by providing a built-in 4 phase distribution stepping motor controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase excitations, and can provide control of the basic stepping angle of the stepping motordivided into 1/16 step units. It also allows the motor speed to be controlled with only a clock signal. The use of this hybrid IC allows designers to implement systems that provide high motor torques, low vibration levels, low noise, fast response, and high-efficiency drive. Compared to the earlier SANYO STK672-050, the STK672-080 features a significantly smaller package for easier mounting in endproducts.

• One of five drive types can be selected with the drive mode settings (M1, M2, and M3) —2 phase excitation drive —1-2 phase excitation drive —W1-2 phase excitation drive —2W1-2 phase excitation drive —4W1-2 phase excitation drive • Phase retention even if excitation is switched. • The MOI phase origin monitor pin is provided. • The CLK input counter block can be selected to be one of thefollowing by the high/low setting of the M3 input pin. —Rising edge only —Both rising and falling edges Note*: Conditions: VCC1 = 24 V, IOH = 2.0 A, 2W1-2 drive used.

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Package Dimensions
unit: mm 4186
[STK672-080]
46.6 41.2 8.5

Applications
• Facsimile stepping motor drive (send and receive) • Paper feed and optical system stepping motor drive in copiers •Laser printer drum drive • Printer carriage stepping motor drive • X-Y plotter pen drive • Industrial robots and other stepping motor applications

12.7

1

15
14×2.0=28 4.0 2.0 0.5 0.4 2.9

Features
• Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator.
(6.6)

Any and all SANYO products described or contained herein do not havespecifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in suchapplications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22002TN (OT) No. 6507-1/17

1.0

3.6

25.5

STK672-080
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• The CLK input pin include built-in malfunction prevention circuits for external pulse noise. • ENABLE and RESET pins provided. These are Schmitt trigger inputs with built-in 20 kΩ (typical) pull-up resistors. • No noise generation due to the differencebetween the A and B phase time constants during motor hold since external excitation is used. • Microstepping operation supported even for small motor currents, since the reference voltage Vref can be set to any value between 0 V and 1/2 VCC2.

• External excitation PWM drive allows a wide operating supply voltage range (VCC1 = 10 to 45 V) to be used. • Current detection resistor (0.15 Ω) built...