TDA5345HT Overview
TDA5345HT The TDA5345HT is a bination of a voice coil motor and a spindle motor driver, designed for 5 V high performance portable small form factor hard disk drives. munications with the micro-controller take place through a 16-bit 3-wire uni-directional serial port. Power dissipation is a major concern in portable drives, therefore each main function can be individually put in sleep mode when it is not used, to...
TDA5345HT Key Features
- Single chip voice coil and spindle motor drivers
- plementary outputs (Nmos & Pmos): No step-up converter needed
- On-chip isolation switch to allow synchronous rectification at power-down
- Suited for ramp load operation
- Register based architecture: on-chip serial interface
- Temperature shut down protection
- Linear 3.3 V regulator using one external NPN transistor
- Power monitor circuitrymonitoring the 5 V supply
- 1 axis shock sensor amplifier
- Switched capacitor regulator (-3 V) using 2 external capacitors and 2 external shottky diodes