L7208
Por table consumer electronics spindle and VCM motor controller
Data Brief
General features
Register Based Architecture 3 wire serial port up to 50MHz Ultra-thin package
Spindle driver
0.5A peak current drive capability Integrated power driver devices ST Smooth Drive architecture Current sense with zero external components Inductive sense start-up support
UFLGA
Description
VCM driver
0.5A peak current drive capability Integrated power driver devices 14 Bit linear DAC for current command Ramp load/unload and emergency retract support
L7208 is available in an ultra-thin package and is optimized for 1.8 inch and sub-1.8 inch consumer equipment drives.
Other functions
Integrated positive and negative switching regulators Shock detect circuitry 10-bit ADC
POR on reset with integrated delay
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Part number L7208
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Free fall interface
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The spindle motor driver subsystem integrates all power FETs driven by ST's Smooth Drive commutation technology. The voice coil driver block includes the power FETs, emergency retract function as well as ramp load and unload capability. Positive and negative regulators are integrated together with provision for shock sensing and free-fall detection. Extremely low power consumption, in all modes of operation, is achieved by an optimized chip partitioning enabling extended battery life in consumer applications. L7208 embeds a serial interface with a maximum speed of 50 MHz.
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Package UFLGA
Packing Tray
September 2006
Rev 1
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www.st.com 3
For further information contact your local STMicroelectronics sales office.
Revision history
L7208
1
Revision history
Table 1.
Date 21-Sep-2006
Document revision history
Revision 1 Initial release. Changes
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L7208
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