LB11983 Sanyo Semiconductor Corporation, LB11983 Datasheet
LB11983
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LB11983 Summary of contents
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... Ordering number : ENN7117A Overview The LB11983 is a 3-phase full-wave current linear sensorless motor driver optimal for refrigerator fan motor drive. Features • current linear driving technique • current limiter circuit • Over saturation prevention circuit for output stage • Provides coil back EMF FG output • ...
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... C1 source and sink current ratio C2 source and sink current ratio Counter FG output ON voltage Counter FG output OFF voltage Thermal shutdown operating temperature Thermal shutdown hysteresis Note*: These items are design target values and are not tested. LB11983 = 12 Symbol Conditions ...
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... Minimum potential of the drum motor driver output transistor. This voltage is detected for constant- current control The current limiter is also activated upon detection of this potential 13.8 V Power supply pin CC LB11983 LB11983 Top view Description 3.9 3.9 U OUT ...
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... The operating frequency range and minimum operating frequency are determined from the 10 CX value of capacitor connected to this pin and GND in the VCO circuit. VCO circuit voltage input pin 11 VCOIN Inputs the PCOUT pin voltage through CR filtering. LB11983 Description Equivalent circuit 200 ...
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... Insertion of a capacitor between this pin and GND stops oscillation of the current control closed loop. Speed control pin. The control is a constant-current control under 17 VC current feedback from RF. Normally, this pin is connected to V LB11983 Description for use. CC Equivalent circuit V CC VREG 12 ...
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... Block Diagram (External constant may vary depending on the motor used.) LB11983 Output Drive Circuit No. 7117-6/8 ...
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... These are connected inside IC and should always be kept independent and open pins (14 and 18) are not connected inside IC and can be used as relay pins. LB11983 1 V OUT U OUT 2 W OUT 3 M-COM LB11983 6 BFGO GND PCOUT 10 CX VCOIN Top view directly before use. 0.022 ...
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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 December, 2002. Specifications and information herein are subject to change without notice. LB11983 PS No. 7117-8/8 ...