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參數(shù)資料
| 型號： | L7207 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Dual mode disk drive spindle and VCM motor driver |
| 中文描述： | 雙模式的磁盤驅(qū)動器主軸電機驅(qū)動器和氯乙烯 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大小： | 52K |
| 代理商： | L7207 |
Data Brief
For further information contact your local STMicroelectronics sales office.
April 2006
Rev 1
1/3
3
L7207
Dual mode disk drive spindle and VCM motor driver
General features
■
Dual operative mode (Desktop and Mobile)
■
Register based architecture
■
Serial communication interface up to 40 MHz
Spindle driver
■
3A peak current drive capability
■
Internal power devices with 0.5
max bridge
impedance at 125°C.
■
ST SmoothDrive architecture
■
Inductance sense start-up capability
■
Current sensing via integrated sense FET
VCM driver
■
2.4A peak current drive capability
■
Internal power devices with 0.5
max bridge
impedance at 125°C
■
Linear and PSM VCM driving
■
Dual 14-bit linear DACs for current command
■
Power on/off ramp load and unload capability
■
Voltage retract mode
Other functions
■
2 linear regulators.
■
Programmable switching regulator
■
Negative switching regulator
■
Internal isolation FET
■
Voltage monitoring
■
Power On Reset with integrated delay
■
Shock sensor circuitry
■
8-bit ADC with multiplexed inputs
■
Thermal sense circuit and over temperature
shutdown
Description
L7207 is a motor controller IC designed for both
desktop and dobile hard disk drive applications.
The spindle motor driver subsystem integrates all
power FETs driven by ST's SmoothDrive
commutation technology. The voice coil driver
block includes the power FETs, as well as ramp
load and unload capability.
Linear voltage and switching regulators are
included, as well as a negative regulator and
power monitoring function.
L7207 embeds a serial interface with a maximum
speed of 40 MHz.
TQFP64
www.st.com
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