TDA5149G - NXP

TDA5149G 12 V Voice Coil Motor VCM driver and spindle motor pre-driver combination chip

The TDA5149G is a combination of a voice coil motor driver and a spindle motor pre-driver, capable of operating 12 V high-performance hard disk drives. The device integrates a spindle pre-driver that drives three external N-channel power MOSFETs in order to drive a three-phase brushless, sensorless DC motor in full wave mode. In the normal mode, commutations.

Features

General features
• Single-chip voice coil motor driver and spindle motor pre-driver
• Internal voltage reference generator
• Programming of timing parameters via the serial bus
• Control of sleep, brake and disable modes for both the VCM and spindle via the serial bus
• Temperature monitor circuit
• General purpose uncommitted operational amplifier. Voice coil motor driver
• On-board full-bridge power DMOS driver with low RDSon
• Class AB linear amplifier with no dead zone
• Adjustable gain and bandwidth
• Retract circuit operating at power-down. Spindle motor pre-driver
• Designed to drive ex.