LB1921 Description
EN5439 Monolithic Digital IC LB1921 Three-Phase Brushless Motor Driver for OA Applications Overview The LB1921 is a single-chip motor driver circuit that provides direct PWM drive output appropriate for driving the power brushless motors used in office automation equipment. The LB1921 also provides a variety of peripheral functions, including speed control and FG amplifier circuits, on chip. mm 3147A-DIP28HS...
LB1921 Key Features
- The LB1921 is an improved output current version of the LB1824
- Three-phase bipolar brushless motor driver
- Digital speed control circuit
- Thermal shutdown circuit
- Start/stop pin
- Lock detector output
- Crystal oscillator and divider circuits
- FG and error amplifiers
- Power supply current limiter