描述 Description

L7207 is a motor controller IC designed for both desktop and dobile hard disk drive applications.

General features

■ Dual operative mode (Desktop and Mobile)

■ Register based architecture

■ Serial communication interface up to 40 MHz

Spindle driver

■ 3A peak currentdrive capability

■ Internal power devices with 0.5?max bridge impedance at 125°C.

■ ST SmoothDrive architecture

■ Inductance sense start-up capability

■ Current sensing via integrated sense FET VCM driver

■ 2.4A peak currentdrive capability

■ Internal power devices with 0.5? max bridge impedance at 125°C

■ 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