L7207
Dual mode disk drive spindle and VCM motor driver
Data Brief
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 ST SmoothDrive architecture Inductance sense start-up capability Current sensing via integrated sense FET
TQFP64 (exposed pad down)
VCM driver
2.4A peak current drive capability Linear and PSM VCM driving Dual 14-bit linear DACs for current command Power on/off ramp load and unload capability Voltage retract mode
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.
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
April 2006
Rev 2
1/3
www.st.com 3
For further information contact your local STMicroelectronics sales office.
Revision history
L7207
1
Revision history
Table 1.
Date 20-Apr-2006 27-Apr-2006
Document revision history
Revision 1 2 Initial release. Added "exposed pad down" to package description. Changes
2/3
L7207
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