LB1854 Description
EN4476B Monolithic Digital IC LB1854M Three-Phase Brushless Motor Driver IC Overview The LB1854M is a three-phase brushless motor driver IC and is optimal, in particular, for driving VCR capstan and drum motors. mm 3073A-MFP30S [LB1854M].
LB1854 Key Features
- 120° voltage linear drive technique
- The LB1854M soft switching scheme allows smaller external capacitors to be used (e.g., chip capacitors)
- Built-in thermal-shutdown function
- Built-in overcurrent protection circuit
- Built-in FG amplifiers (operational amplifier and Schmitt amplifier)
- Control start voltage set by an external voltage
- The output current feedback level can be changed by changing the control gain to one of two levels