lb8503v Sanyo Semiconductor Corporation, lb8503v Datasheet
lb8503v
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lb8503v Summary of contents
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... Ordering number : ENA0366 LB8503V Overview The LB8503V is an improved functionality version of the LB8500 and LB8502 products that features the added functions listed below. The LB8503V supports both single-phase and three-phase applications. Added Functions • Supports origin shifting in the speed control function • ...
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... VFGO Hysteresis VFGS High-level input current IFGH Low-level input current IFGL FGOUT pin Output low saturation voltage VFG Output leakage current IFGL LB8503V Conditions V CC pin E0 pin FG OUT pin FG OUT pin 1 When mounted on a circuit board * 3 , glass epoxy. Conditions V CC pin ...
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... High-level output voltage V OH (VCO) Low-level output voltage V OL (VCO) * The design specification items are design guarantees and are not measured. Package Dimensions unit : mm (typ) 3178B 5 0.65 0.15 (0.33) 0.22 SANYO : SSOP16(225mil) LB8503V Conditions min VREG - 0.5 VFGIN = 6VREG VFGIN = 0V VREG - 0.3 1.0 0.8 0.6 0.4 0.2 0 – 20 Ratings Unit typ max 3 ...
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... Integrating amplifier output. (For use with an accelerating driver IC if the command voltage becomes low (single-phase systems).) EO3 16 Integrating amplifier inverting output. (For use with an accelerating driver IC if the command voltage becomes high (three-phase systems).) LB8503V NC GND FGOUT FGIN LB8503V CVI CVO CTL Description LIM 9 8 Top view C ...
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... Combination with an accelerating driver IC when the command voltage goes low (single-phase systems) 12V 6VREG LIM R2 C1 SOFT CVI CVO CTL signal CTL LB8503V LB8503V VREG EDGE FG One-shot multivibrator VREF VREG CTL GND FGOUT VREG FG FGIN EI C2 VTH EO1 EO3 I LB01769 No.A0366-5/20 ...
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... Combination with an accelerating driver IC when the command voltage goes high (three-phase systems) 12V 6VREG LIM R2 C1 SOFT CVI CVO CTL CTL signal LB8503V LB8503V VREG EDGE FG One-shot multivibrator VREF VREG CTL GND FGOUT VREG FG FGIN EI C2 EO1 VCTL EO3 I LB01770 No.A0366-6/20 ...
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... Low on duty CTL pin 6VREG EO pin 0V Startup Timing (soft start pin CTL pin SOFT pin LB8503V The slope is determined by the external constant connected to the RC pin. For a smaller RC time constant Determined by the LIM pin voltage →High CTL pin (PWM DUTY) →Low EO1 pin voltage (V) → ...
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... CTL signal As shown in the figure below, the LB8503V generates a pulse signal from edges on the FG signal and then generates a pulse width waveform determined by the RC time constant in a one-shot multivibrator. The LB8503V then integrates that pulse waveform to create the output driver IC control voltage (a DC voltage). ...
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... R=(R×C)/0.01μF....................................................... (3) R=(R×C)/0.015μF..................................................... (4) Note that the temperature characteristics of the curve are determined by the temperature characteristics of the capacitor connected to the RC pin. A capacitor with excellent temperature characteristics must be used to minimize motor speed variation with temperature. LB8503V (RPM) 0% CTL Duty (%) 100% I LB01771 ...
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... From the above, the desired resistor values will be 20kΩ between CVO and CVI and 80kΩ between CVI and ground. Note that the slope will change. (In this case, since the resistor ratio is 1:4, the result will be 4/5 of (or 0.8 times) the original slope.) If required, the RC pin resistor value must be changed to correct the slope LB8503V (RPM) X axis shift 0% CTL Duty (%) LIM ...
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... CVO pin, the total resistor value must exceed 100kΩ.) Note that the slope will change. (In this case, since the resistor ratio is 1:6, the result will be 6/7 of (or 0.86 times) the original slope.) If required, the RC pin resistor value must be changed to correct the slope LB8503V X axis shift 0% CTL Duty (%) LIM VREF SOFT ...
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... Generate the LIM voltage by resistor dividing the 6 V regulator voltage. For example, the resistor ratio to create a 5V level will be 1:5. Thus the resistor values will be 10kΩ between 6VREG and LIM and 51kΩ between LIM and ground. LB8503V (RPM) 10000 8000 ...
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... Note that the larger the capacitor, the slower its response to changes in the input signal will be. CTL pin input inverted waveform (the frequency is the same) CTL pin CTL circuit LB8503V 6VREG A capacitor that can smooth the pin voltage is connected here. 1 < pin 180kΩ ...
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... CTL signal When the speed control diagram origin rpm, the CVO pin is connected to the CVI pin. If the minimum speed is not set, connect the LIM pin to the 6VREG pin. LB8503V (RPM) 0% PWM Duty(%) LB8503V VREG EDGE FG One-shot multivibrator VREF VREG CTL ...
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... When the speed control diagram origin is set so the motor turns at 0%, the CVO pin to ground potential difference is resistor divided and the midpoint is input to the CVI pin. The speed at 0% can be changed with the resistor ratio. LB8503V (RPM) 0% PWM Duty(%) LB8503V VREG EDGE FG One-shot multivibrator VREF ...
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... CVO pin and resistor divided, and that divided level is input to the CVI pin. The duty at which rotation starts can be changed by changing the resistor ratio. Note that the total value of the resistors R4 and R5 must exceed 100kΩ. LB8503V (RPM) 0% PWM Duty(%) LB8503V VREG FG EDGE One-shot multivibrator VREF ...
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... When the motor speed is controlled voltage, that voltage must be in the range from 2V to 6VREG. Note that the motor stops when the control voltage is at 6VREG, and the motor speed increases as the voltage falls. LB8503V (RPM CV1 pin voltage (V) LB8503V VREG EDGE FG One-shot multivibrator VREF ...
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... With this circuit, the motor speed remains constant even if there are fluctuations in the supply voltage or static voltage also possible to input a fixed-duty signal to the CTL pin signal input as an input signal for which soft start is enabled at startup. LB8503V (RPM) 0% 20% 40% 60% CTL signal (PWM duty) C pin voltage 6V LB8503V VREG EDGE FG One-shot multivibrator VREF VREG CTL GND 80% 100% ...
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... CTL signal In this circuit, the dynamic range of the LB8503V EO pin (the range from the amplifier block output high to output low levels) must be wider than the dynamic range (from the high to low levels of the PWM signal) of VTH pin of driver IC with which this IC is combined. ...
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... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of March, 2007. Specifications and information herein are subject to change without notice. LB8503V PS No.A0366-20/20 ...