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 125C.
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 125C
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
L7207
3/3
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