Product Summary

The TDA5340 is a BiCMOS integrated circuit used to drive brushless DC motors in full-wave mode. The TDA5340 senses the rotor position using an EMF sensing technique and is ideally suited as a drive circuit for a hard disk drive motor. The TDA5340 also includes a voice coil motor driver (VCM), reset and park facilities and an accurate speed regulator. In addition, a serial port facilitates the control of the device. Application is hard disk drive (HDD).

Parametrics

TDA5340 absolute maximum ratings: (1)VDD, positive supply voltage: 5.5 V; (2)Vi, input voltage (all pins): -0.3 to VDD + 0.3 V; (3)V60,8,21, output voltage pins MOT1, MOT2 and MOT3: -0.25 to +5.5 V; (4)V45,37,53, output voltage pins VCM-, VCM+ and SENSEOUT: 0.7 to VDD + 0.7 V; (5)V1,2,18,19, input voltage pins CAPST, CAPTI, CAPCDM and CAPCDS: 2.5 V; (6)Tstg, IC storage temperature: -55 to +150 °C; (7)Tamb, operating ambient temperature: 0 to +70 °C.

Features

TDA5340 features: (1)Full-wave commutation (using push-pull output stages)without position sensors; (2)Built-in start-up circuitry; (3)Three push-pull MOS outputs: 1 A output current; Low voltage drop; Built-in current limiter; (4)Thermal protection; (5)General purpose operational amplifier; (6)Reset generator; (7)Motor brake facility; (8)Actuator driver (H-bridge current-controlled); (9)Power-down detector; (10)Automatic park and brake procedure; (11)Adjustable park voltage; (12)Sleep mode; (13)Speed control with Frequency-Locked Loop (FLL); (14)Serial port; (15)Friction reduction prior to spin-up.

Diagrams

TDA5340 PIN CONNECTION