lb1674v Sanyo Semiconductor Corporation, lb1674v Datasheet
lb1674v
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lb1674v Summary of contents
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... Ordering number: EN4392A Overview The LB1674V is a small motor driver ideal for mini-cassettes, headphone stereos and micro-cassettes. Functions and Features c 3-phase unipolar, brushless, sensorless motor driver c Reverse function c Built-in speed control function (V servo) c Built-in reference voltage (0 Soft switching driver Specifications Absolute Maximum Ratings 25° ...
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... Current detection accuracy Current detection ratio Starting pulse period COM* lead-in current I COM Output saturation voltage Logic input high-level voltage Logic input low-level voltage TC pin lead-in current Pin Assignment LB1674V = 1.5 V, unless otherwise noted CC Conditions START pin: high I CC START pin: low Vref / ...
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... Equivalent Circuit Block Diagram Oscillator circuit Start detector Sample Application Circuits at V LB1674V Supply bias Reference voltage Current Speed detector detector Error amplifier = 1 Note: PU, PV and PW are internal operation measurement pins. Unit (resistance: , capacitance: F) No.4392-3/6 ...
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... COM Vref 9 START 10 Vsp LB1674V Unit (resistance: ) Equivalent Circuit c Motor coil connection pins c Power transistor base pins c Power and signal ground c Starting pulse period set pin c Start-up waveform detection circuit offset set pin c Drive direction switch pin (normally low) c Reference voltage pin (0 Start/stop control pin ...
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... TC1 15 TC2 LB1674V Unit (resistance: ) Equivalent circuit c Speed signal error amplifier reference input pin c Speed signal error amplifier output for motor current feedback c Motor current detection pin c Motor current rising/falling time constant set pins c Motor current rising/falling time constant set pins c Current waveform generator ...
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... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of August, 1996. Specifications and information herein are subject to change without notice. LB1674V Unit (resistance: ) ...