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LB11946 数据表(PDF) 1 Page - ON Semiconductor |
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LB11946 数据表(HTML) 1 Page - ON Semiconductor |
1 / 14 page 22509 MS 20090212-S00006 / N2206 / 73004TN(OT) No.7946-1/14 http://onsemi.com Semiconductor Components Industries, LLC, 2013 June, 2013 LB11946 Overview The LB11946 is a stepping motor driver IC that implements PWM current control bipolar drive with a fixed off time. This IC features 15 current setting levels using a fixed VREF voltage and support for micro-stepping drive from 1-2 phase excitation drive to 4W1-2 phase excitation drive. This device is optimal for driving stepping motors such as those used for carriage drive and paper feed in printers. Features • PWM current control (with a fixed off time) • Logic input serial-parallel converter (allows 1-2, W1-2, 2W1-2, and 4W1-2 phase excitation drive) • Current attenuation switching function (with slow decay, fast decay, and mixed decay modes) • Built-in upper and lower side diodes • Simultaneous on state prevention function (through current prevention) • Noise canceller function • Thermal shutdown circuit • Shutoff on low logic system voltage circuit • Low-power mode control pin Specifications Maximum Ratings at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Motor supply voltage VBB 50 V Peak output current IO peak tw ≤ 20μS 1.2 A Continuous output current IO max 1.0 A Logic system supply voltage VCC 7.0 V Logic input voltage range VIN -0.3 to VCC V VCC = 5V specifications 1.0 V Emitter output voltage VE VCC = 3.3V specifications 0.5 V Allowable power dissipation Pd max Independent IC 3.0 W Operating temperature Topr -25 to +85 °C Storage temperature Tstg -55 to +150 °C Monolithic Digital IC PWM Current Control Stepping Motor Driver Ordering number : EN7946A 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. |
类似零件编号 - LB11946 |
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类似说明 - LB11946 |
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