TDA5144
Overview
- 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 2.0 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
- An unstabilized supply can be used.
- VVMOT = VP; +AMP IN = -AMP IN = 0 V; all outputs IO = 0 mA. ORDERING INFORMATION PACKAGE TYPE NUMBER PINS TDA5144AT TDA5144T 20 28 PIN POSITION SOL SOL MATERIAL plastic 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 = 1.2 Ω CONDITIONS 4 1.7 - 1.8 MIN. - - 0.90 2.0 TYP. APPLICATIONS TDA5144
- General purpose spindle driver (e.g. for hard disk)
