L7208 Datasheet, PDF (1/3 Pages) STMicroelectronics – Portable consumer electronics spindle and VCM motor controller

L7208
Portable 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}
t(s ^{■ ST Smooth Drive® architecture}
c _{■ Current sense with zero external components}
du ■ Inductive sense start-up support
Pro _{VCM driver}
te _{■ 0.5A peak current drive capability}
le _{■ Integrated power driver devices}
so _{■ 14 Bit linear DAC for current command}
b _{■ Ramp load/unload and emergency retract}
- ^{O support}
t(s) ^{Other functions}
uc ^{■ Integrated positive and negative switching}
d regulators
ro _{■ Shock detect circuitry}
P _{■ 10-bit ADC}
te _{■ POR on reset with integrated delay}
Obsole ^{■ Free fall interface}
UFLGA
Description
L7208 is available in an ultra-thin package and is
optimized for 1.8 inch and sub-1.8 inch consumer
equipment drives.
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.
Order code
Part number
L7208
Package
UFLGA
Packing
Tray
September 2006
Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
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