LB11870_07 SANYO [Sanyo Semicon Device], LB11870_07 Datasheet
LB11870_07
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LB11870_07 Summary of contents
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Ordering number : EN7256A LB11870 Overview The LB11870 is a three-phase brushless motor driver developed for driving the motors used with the polygonal mirror in laser printers and plain paper copiers. It can implement, with a single IC chip, all ...
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Specifications Absolute Maximum Ratings 25°C Parameter Symbol Supply voltage V CC max Output current I O max Allowable power dissipation 1 Pd max1 Allowable power dissipation 2 Pd max2 Operating temperature Topr Storage temperature Tstg Note *1: ...
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Continued from preceding page. Parameter Symbol [PWM Oscillator (PWM) High-level output voltage V OL (PWM) Low-level output voltage External capacitor charge ICHG current f(PWM) Oscillator frequency V(PWM) Amplitude [FGS Output] Output saturation voltage V OL (FGS) Output leakage ...
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Continued from preceding page. Parameter Symbol [CLD Circuit] External capacitor charge ICLD current V H (CLD) Operating voltage [CLK Pin] fI(CLK) External input frequency V IH (CLK) High-level input voltage V IL (CLK) Low-level input voltage V IO (CLK) Input ...
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Pin Assignment Three-Phase Logic Truth Table (IN = [H] indicates a condition in which: IN+ > IN–) IN1 IN2 ...
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Block Diagram and Application Circuit Example FGFIL FGIN– – FGIN+ + CLK CLK PWM PWM OSC S/S S/S BRSEL BRSEL CSD CSD OSC HYS AMP IN1+ IN1– IN2+ IN2– VREG LB11870 VREG VREG FGS LD LD LDMASK FG FILTER VREG ...
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Pin Functions Pin No. Symbol Pin Description 3 OUT1 Motor drive output 1 OUT2 46 OUT3 44 GND3 Output block ground 37 VM1 Output block power supply and current 38 VM2 detection. Insert the resistor Rf between this pin and ...
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Continued from preceding page. Pin No. Symbol Pin Description 19 FC Frequency characteristics correction for the current control circuit. Insert a capacitor (about 0.01 to 0.1μF) between this pin and ground. The output duty is determined by comparing the voltage ...
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Continued from preceding page. Pin No. Symbol Pin Description 25 FGFIL FG filter connection. If noise on the FG signal input is a problem, insert a capacitor (up to about 2200pF) between this pin and ground. 26 CSD Sets the ...
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Continued from preceding page. Pin No. Symbol Pin Description 32 S/S Start/stop control input. Low 1.5V High: 3.5V to VREG Hysteresis: 0.5V Low: start. This pin goes to the high level when open. 33 CLK Clock input. Low: ...
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Continued from preceding page. Pin No. Symbol Pin Description 36 VREG Stabilized power supply output (5V output). Insert a capacitor of about 0.1μF between this pin and ground for stabilization Power supply. Insert a capacitor of ...
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Power Saving Circuit This IC goes into a power saving state that reduces the current drain in the stop state. The power saving state is implemented by removing the bias current from most of the circuits in the IC. ...
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Phase Lock Signal (1) Phase lock range Since this IC does not include a counter or similar functionality in the speed control system, the speed error range in the phase locked state cannot be determined solely by IC characteristics. ...
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SANYO Semiconductor Co.,Ltd. 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 ...