TDA5143T

INTEGRATED CIRCUITS DATA SHEET TDA5143T Brushless DC motor drive circuit Product specification Supersedes data of March 1992 File under Integrated Circuits, IC11 June 1994 Philips Semiconductors Philips Semiconductors Product specification Brushless DC motor drive circuit FEATURES Full-wave commutation (using push/pull drivers at the output stages) without position sensors Built-in start-up circuitry Three push-pull outputs: – output current 0.85 A (typ.) – low saturation voltage – built-in current limiter – soft-switching outputs for low Electromagnetic Interference (EMI) Thermal protection Flyback diodes Tacho output without extra sensor Transconductance amplifier for an external control transistor. QUICK REFERENCE DATA Measured over full voltage and temperature range. SYMBOL VP VVMOT VDO ILIM Notes 1. An unstabilized supply can be used. 2. VVMOT = VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA. ORDERING INFORMATION PACKAGE TYPE NUMBER PINS TDA5143T 20 PIN POSITION SOL MATERIAL plastic PARAMETER supply voltage input voltage to the output driver stages drop-out output voltage current limiting note 1 note 2 IO = 100 mA VVMOT = 10 V; RO = 5.9 Ω CONDITIONS 4 1.7 − 0.7 MIN. − − 0.93 0.85 TYP. APPLICATIONS TDA5143T General purpose spindle driver (e.g. for hard disk) Laser beam printer. GENERAL DESCRIPTION The TDA5143T is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode. The device is sensorless (saving of 3 hall-...