TDA5149G Description
The TDA5149G is a bination 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, mutations are generated from the internal Back EMF (BEMF) sensing...
TDA5149G Key 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 unmitted 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