NXP Semiconductors TDA5149G
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. The VCM driver is a linear transconductance amplifier capable of handling currents up to 1.65 A.| Part No. | TDA5149G |
|---|---|
| Datasheet | TDA5149G Download |
| Manufacturer |  NXP Semiconductors |
| Description | 12 V Voice Coil Motor VCM driver and spindle motor pre-driver combination chip |
| Buy | Stock & Price |
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
In the normal mode, commutations are generated from the internal Back EMF (BEMF) sensing circuitry.
