Data Brief

For further information contact your local STMicroelectronics sales office.

December 2007

Rev 1

1/4

4

L7220

Disk drive spindle and VCM motor driver

Features

desktop high performance drives

VCM driver

Ωmax

bridge impedance

gain switch

capability with 10 bit ADC

unload circuitry at power off with end of travel

detection or alternate voltage mode power off

scheme

Spindle driver

Ωmax

bridge impedance

Other functions

regulators controllers with voltage margining

programmable integrated delay

shutdown

Description

L7220 is a motor controller IC designed for both

enterprise and multi-platter desktop 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.

Hysteretic switching regulator controllers are

included.

L7220 embeds a serial interface with a maximum

speed of 60MHz.

TQFP64

(exposed pad down)

Table 1.

Device summary

Order code

Package

Packing

L7220

TQFP64

Tray

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