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FAN8621B Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FAN8621B Datasheet(HTML) 1 Page - Fairchild Semiconductor |
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1 / 21 page  ©2000 Fairchild Semiconductor International www.fairchildsemi.com Rev. 1.0.0 May. 2000. 1 Features General • Hysteresis power on reset with delay function • 5V, 12V supplies monitoring • Thermal shut down(TSD) • Programmable precision regulator usging minimal external component • Three state control input to reduce number of PINs Spindle Motor(SPM) • ASIC based start-up • Internal back-EMF processing • Internal sensorless commutation • Internal SPM speed control with SFLL(Syncronized Frequency Lock Loop). • Linear SPM current control • Selectable Motor Speed (5400/7200 RPM) • Soft commutation circuitry to reduce acoustic noise • Adjustable brake delay time • Maximum 2A start-up current capability • Internal and external spindle brake • Speed lock indicator output Voice Coil Motor (VCM) • Intelligent retract (decreased bouncing) • 1.2A internal VCM power driver • Selectable transconductance • 4V precision reference output • Two PWM input (fine/coarse) for VCM set point Description The FAN8621B, is a Bipolar monolithic stand-alone IC, designed for 12V HDD applications.The internal power stage consists of vertical PNP and NPN TRs for both SPM and VCM, thus minimizing voltage drop, and increasing drive capability up to 2A for SPM and 1.2A for VCM. This device includes soft commutation drive to reduce audible noise and intelligent retract function for decreased bouncing. 48-QFPH-1414 Typical Applications • Hard disk drive(HDD) Ordering Information Device Package Operating Temp. FAN8621B 48-QFPH-1414 0 ~ 70 °C FAN8621B 12V Spindle Motor and Voice Coil Motor Driver IC |
Número de pieza similar - FAN8621B |
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Descripción similar - FAN8621B |
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