LV8804V Sanyo Semiconductor Corporation, LV8804V Datasheet
LV8804V
Related parts for LV8804V
LV8804V Summary of contents
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... Ordering number : ENA1407 LV8804V Overview The LV8804V is a motor driver for PC and server fans. Feature • Direct PWM 3-phase sensorless motor driver Specifications Absolute Maximum Ratings 25°C Parameter V CC maximum supply voltage V CC max VG maximum supply voltage VG max OUT pin maximum output current ...
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... Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since it operates outside the IC's guaranteed operating range, the customer's thermal design should be performed so that the thermal protection circuit will not be activated when the fan is running under normal operating conditions. LV8804V Symbol Conditions ...
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... F/R 7 CTL 8 MINSP 9 LV8804V SOFTST 1/2FG OSC 17 GND 18 LV8804V SIDE VIEW BOTTOM VIEW (4.0) 0.2 SANYO : SSOP36J(275mil) 1.5 Thermal resistance evaluation board 1.0 36 COM Independent 0 – 30 – ...
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... Block Diagram 1/2FG VREF CTL CTL VREG MINSP OSC START OSC FIL COMIN COM GND SUB_GND LV8804V CTOSC CTLAMP REFOSC SENSORLESS LOGIC PRI DRIVE SELECTOR CURR LIM SOFTST CPO CP CHARGE PUMP VREG VREG F COM WO RF No.A1407-4/10 ...
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... V < MINSP < 3V). 10 SOFTST Soft start time setting. The motor can be started smoothly by connecting a capacitor between this pin and ground. LV8804V Function VREF VREG 15kΩ 7 100kΩ ...
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... Output pins. Connect these pins to the and W of the motor coil 24, 26, RF Output current detection pins. The drive 27 current is detected by connecting a resistor between these pins and ground. LV8804V Function VREG VREG 500Ω 17 500Ω VREG 28 Equivalent circuit 500Ω ...
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... LV8804V Functional Description 1 Control Characteristics IRF When RF = 0.25Ω The current flowing to the motor and the control characteristics are determined by adjusting the resistance of the RF resistor. By connecting a resistor with a resistance of 0.25Ω between the RF pin and GND, the limit current is set at a motor current of 1A, and the control characteristics shown in the diagram above are achieved. By increasing the RF resistance, the limit current is reduced ...
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... This pin is used to connect the lock detection capacitor. The constant-current charging and constant-current discharging circuits incorporated causes locking when the pin voltage reaches 2.5V, and releasing the lock protection when it drops to 0.5V. This pin must be connected to the GND when it is not going to be used. LV8804V *9 0.1µ ...
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... By connecting a capacitor between this pin and GND, the motor speed can be increased gradually. When the pin voltage exceeds 2.5V, the soft start is released, and the LV8804V is switched to normal control. If the soft start function is not going to be used, connect the pin to the VREG pin. ...
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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, 2009. Specifications and information herein are subject to change without notice. LV8804V PS No.A1407-10/10 ...