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LB1940U Datasheet(PDF) 1 Page - ON Semiconductor |
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LB1940U Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 8 page D0512HK 20080624-S00002,B8-5952/D2706 MS IM/93004 JO IM No.7232-1/8 http://onsemi.com Semiconductor Components Industries, LLC, 2013 June, 2013 LB1940T LB1940U Overview The LB1940T and LB1940U are 2-phase exciter type bipolar stepper motor driver ICs that feature low-voltage, (supporting 3V battery) and low current operation with low saturation voltage. These ICs enable constant-current control of actuators, and are optimal for driving the actuators of PC peripherals such as USB compatible scanners, FDDs, and printers, as well as for controlling the shutter, iris, and AF of a digital still camera. Features • Low-voltage driving 2-power source type: VS = 1.6 to 7.5V, VDD = 1.9 to 6.5V Single power source type: VS = VDD = 1.9 to 7.5V • Low saturation output: VO(sat) = 0.3V at IO of 200mA • Constant-current control • Built-in reference voltage (Vref = 0.9V) • Small-sized, low-profile package (LB1940T: TSSOP20; 225mil; thickness (t) = 1.2mm max.) (LB1940U: MSOP20; thickness (t) = 0.85mm max.) Specifications Absolute Maximum Ratings at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VB max VS1, VS2, VDD -0.3 to +10.5 V Output applied voltage VOUT max OUT1, OUT2, OUT3, OUT4 -0.3 to +10.5 V Output Current IO max 400 mA Input applied voltage VIN max ENA1, ENA2, IN1, IN2, VC -0.3 to +10.5 V Allowable power dissipation Pd max Mounted on a specified board * 800 mW Operating temperature Topr -20 to +85 °C Storage temperature Tstg -55 to +150 °C * Mounted on a Specified board: 114.3mm ×76.1mm×1.6mm, glass epoxy Ordering number : EN7232B Monolithic Digital IC 2-ch H-Bridge Constant Current Driver 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. |
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