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STK672-440A-E 데이터시트(PDF) 1 Page - ON Semiconductor

부품명 STK672-440A-E
상세설명  2-phase Stepping Motor Driver
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제조업체  ONSEMI [ON Semiconductor]
홈페이지  http://www.onsemi.com
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62911HKPC 018-08-0074/N2509HKIM/71608HKIM No.A1128-1/21
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
June, 2013
STK672-440A-E
Overview
The STK672-440A-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
• Built-in overcurrent detection function (output current OFF).
• Built-in overheat detection function (output current OFF).
• If either over-current or overheat detection function is activated, the FAULT1 signal (active low) is output.
The FAULT2 signal is used to output the result of activation of protection circuit detection at 2 levels.
• Built-in power on reset function.
• A micro-step sine wave-driven driver can be activated merely by inputting an external clock.
• External pins can be used to select 2, 1-2 (including pseudo-micro), W1-2, 2 W1-2, or 4W1-2 excitation.
• The switch timing of the 4-phase distributor can be switched by setting an external pin (MODE3) to detect either the
rise and fall, or rise only, of CLOCK input.
• Phase is maintained even when the excitation mode is switched. Rotational direction switching function.
• Supports schmitt input for 2.5V high level input.
• Incorporating a current detection resistor (0.122Ω: resistor tolerance ±2%), motor current can be set using two
external resistors.
• The ENABLE pin can be used to cut output current while maintaining the excitation mode.
• With a wide current setting range, power consumption can be reduced during standby.
• No motor sound is generated during hold mode due to external excitation current control.
• A external excitation system is used for PWM operations. Fixed current control for shifting the phase of Ach/Bch is
used for the PWM phase.
Ordering number : ENA1128B
Thick-Film Hybrid IC
2-phase Stepping Motor Driver


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