TDA5143T Datasheet | NXP Semiconductors

FEATURES - Full-wave mutation (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 m A. 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 m A VVMOT = 10 V; RO = 5.9 Ω CONDITIONS 4 1.7 - 0.7 MIN. - - 0.93 0.85 TYP. APPLICATIONS - 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-sensors) using the back-EMF sensing technique to sense the rotor position. A special circuit is built-in to reduce the EMI (soft switching output stages). It is ideally suited as a drive circuit for hard disk drive spindle motor as well as other applications (e.g. laser beam printer). MAX. 18 16 1.05 1.0 UNIT V V V A CODE SOT163-1 June 1994 Philips Semiconductors Product specification Brushless DC motor drive circuit BLOCK DIAGRAM BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBB...