lb11681h Sanyo Semiconductor Corporation, lb11681h Datasheet
lb11681h
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lb11681h Summary of contents
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... LB11681H Overview The LB11681H is a three-phase brushless fan motor driver IC. This IC uses a PWM soft switching drive-method (for low-noise drive). Since this IC includes a motor constraint protection circuit necessary for a fan motor system, highly reliable products including this IC can be designed. Also, this IC can be operated with 12V single power supply ...
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... Minus- side pin voltage VH- Thermal shut down circuit Thermal shut down operation TSD temperature ∆TSD Temperature hysteresis *: Design target value and no measurement was made. LB11681H Symbol Conditions Symbol Conditions VCTL=1.75V and VREF=1.75V SOURCE + SINK =0. =0.6A OSC=220pF Differential input Sum of upper and lower hysteresis Linear region 1 ...
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... LB11681H 0.25 SANYO : HSOP28H(375mil) Pd max - Ta 2.4 Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy 2.0 1.6 1.2 Independent IC 0.8 0 Ambient Temperature, Ta -° LB11681H 0.96 0.384 80 100 ILB01808 Top view No.A0665-3/11 ...
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... Block Diagram LB11681H + No.A0665-4/11 ...
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... UOUT→VOUT Sample Application Circuit 12V LB11681H F/R “L” Sink HU+ HV VCTL VREF LB11681H F/R “H” HW+ HU+ HV ...
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... WOUT 5 PGND Output system ground 10 PWM PWM oscillation pin. Connect a capacitor between this pin and GND Output drive current adjustment pin. Connect a resistor between this pin and GND. LB11681H Pin Description 10 Equivalent Circuit 35kΩ 1kΩ 3kΩ ...
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... LD Lock detection output pin (Open collector output) The LD output goes to the high level during lock protection When LD output is necessary, connect a pull-up resistance with this pin LB11681H Pin Description VR 15 Equivalent Circuit 40kΩ ...
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... Symbol 20 VREF The pin as reference voltage of control amplifier 21 VCTL Control amplifier input pin 22 SGND Small signal system ground pin 23,24 HW± Hall input pin 25,26 HV± 27,28 HU± LB11681H Pin Description VR Equivalent Circuit VR 10kΩ 20 300Ω 300Ω 26 300Ω 28 No.A0665-8/ ...
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... Explanation of LB11681H and External Parts The LB11681H is three-phase brush less fan motor driver IC that can be operated with 12V signal power supply. Since this IC is PWM soft switching drive perfect to operate as high-efficiency motor for a low-noise drive. Also, since this IC incorporates a motor constraint protection function necessary for a fan motor, highly reliable products can be designed ...
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... The average time from the operation of the lock protection function to release of the lock protection condition = 2.4s 9. Control Amplifier The driving current of the LB11681H can be controlled by the difference in voltage (the difference in voltage is shown as “∆CTL” from here.) between the VCTL pin (pin 21) and the VREF pin (pin 20). When ∆CTL increases, the driving current becomes large. ...
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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 February, 2007. Specifications and information herein are subject to change without notice. LB11681H PS No.A0665-11/11 ...