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參數(shù)資料
| 型號： | FAN8621B |
| 英文描述： | Industrial Control IC |
| 中文描述： | 工業(yè)控制IC |
| 文件頁數(shù)： | 1/21頁 |
| 文件大?。?/td> | 222K |
| 代理商： | FAN8621B |
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
FAN8621B
Package
48-QFPH-1414
Operating Temp.
0 ~ 70
°
C
FAN8621B
12V Spindle Motor and Voice Coil Motor Driver IC
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