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LB11873-TRM-E Folha de dados(PDF) 1 Page - ON Semiconductor |
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LB11873-TRM-E Folha de dados(HTML) 1 Page - ON Semiconductor |
1 / 14 page 71107 TI PC 20070621-S00004/41807 TI PC B8-9144 No.A0081-1/14 http://onsemi.com Semiconductor Components Industries, LLC, 2013 May, 2013 LB11873 Overview The LB11873 is a 3-phase brushless motor driver developed for driving the polygonal mirror motor used in plain-paper copiers and similar products. This IC can implement the circuits required for polygonal mirror motor drive (speed control and driver circuits) in a single chip. The LB11873 implements low-noise/low-vibration PWM drive by changing the current at phase switching gradually to reduce motor noise. Functions • Three-phase bipolar drive (quiet direct PWM) • PLL speed control circuit • Hall sensor FG support • Dedicated external clock • Brake mode switching circuit (free running and reverse braking) • Phase lock detection output (with masking function) • Built-in current limiter, constraint protection, undervoltage protection, thermal protection, and CLK line disconnection protection circuits • Input pins support 3V system microcontrollers Specifications Absolute Maximum Ratings at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 30 V Output current IO max T ≤ 500ms 1.8 A Allowable power dissipation 1 Pd max1 Independent IC 0.9 W Allowable power dissipation 2 Pd max2 When mounted on a circuit board *1 2.1 W Operating temperature Topr -20 to +80 °C Storage temperature Tstg -55 to +150 °C *1 Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy. Monolithic Digital IC For Polygonal Mirror Motors Three-Phase Brushless Motor Driver Ordering number : ENA0081B 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. |
Nº de peça semelhante - LB11873-TRM-E |
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Descrição semelhante - LB11873-TRM-E |
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