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LD7000 - Spindle/VCM Controller and Pre-driver

Description

The LD7000 Servo and Spindle Predriver, a CMOS monolithic integrated circuit housed in a 64-lead TQFP package operates from +5 V and +12 V supplies.

It is designed to drive a voice coil actuator and a 3-phase, Hall-sensorless motor with external power MOSFETs.

Features

  • Small footprint 64 or 48 pin TQFP package Spindle driver is PWM during run and start Commutator is driven by a phase lock loop for high jitter immunity Adjustable slew rate to minimize stress in the power MOSFETs Microprocessor controlled spindle startup Saturation detector to monitor loop compensation amplifier status Precision low voltage monitor circuitry for both +5 V and +12 V supplies, LD7000 only Dua.

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Datasheet Details

Part number LD7000
Manufacturer Ldic
File Size 81.86 KB
Description Spindle/VCM Controller and Pre-driver
Datasheet download datasheet LD7000 Datasheet

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www.DataSheet4U.com LD7000 Spindle/VCM Controller and Pre-driver DESCRIPTION The LD7000 Servo and Spindle Predriver, a CMOS monolithic integrated circuit housed in a 64-lead TQFP package operates from +5 V and +12 V supplies. It is designed to drive a voice coil actuator and a 3-phase, Hall-sensorless motor with external power MOSFETs. The device is intended for use in 12 V disk drive applications. The actuator driver includes a saturation detector to monitor the loop compensation amplifier for saturation, an uncommitted opamp for input signal conditioning, a voltage reference to provide a precise voltage level for internal PWM buffers, and reduced power dissipation.
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