TDA5149G

INTEGRATED CIRCUITS DATA SHEET TDA5149G 12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip Product specification File under Integrated Circuits, IC11 1996 May 06 Philips Semiconductors Product specification 12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip 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 external N-channel power MOSFETs for brushless, sensorless DC motors Internal or external commutation control Digital commutation timing Average motor supply current control with Pulse Width Modulation (PWM) Soft switching under PWM control Spindle brake after park at power-down. APPLICATIONS TDA5149G 12 V high-performance hard disk drives. GENERAL DESCRIPTION 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 ...