TDA5142T
Overview
- Full-wave commutation without position sensors
- Built-in start-up circuitry
- Six outputs that can drive three external transistor pairs: - output current 0.2 A (typ.) - low saturation voltage - built-in current limiter
- Thermal protection
- Tacho output without extra sensor
- Transconductance amplifier for an external control transistor
- Motor brake facility. QUICK REFERENCE DATA Measured over full voltage and temperature range. SYMBOL VP VVMOT VO ILIM Note
- An unstabilized supply can be used. ORDERING INFORMATION PACKAGE TYPE NUMBER PINS TDA5142T 24 PIN POSITION SOL MATERIAL plastic PARAMETER supply voltage input voltage to the output driver stages driver output voltage current limiting IO = 100 mA; lower transistor IO = 100 mA; upper transistor VVMOT = 14.5 V; RO = 47 Ω note 1 CONDITIONS 4 3 - 1.05 150 MIN. - - - - 200 TYP. GENERAL DESCRIPTION APPLICATIONS
- High-power applications e.g.: - high-end hard disk drives - automotive. TDA5142T The TDA5142T 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. It includes a brake function and 6 pre-drivers able to control FETs or bipolar external transistors. It is ideally suited for high-power applications such as high-end hard disk drives, automotive and other applications. MAX. 18 18 0.35 - 250
