Ordering number : EN6087B
LB1975
Monolithic Digital IC
For Fan Motor
3-phase Brushless Motor Driver
http://onsemi.
com
Overview
The LB1975 is a 3-phase brushless motor driver IC suited for use in direct PWM driving of DC fan motors for air conditioners, water heaters, and other similar equipment.
Since a shunt
regulator circuit is built in, single power supply operation sharing the same power supply for the motor is supported.
Features
• Withstand voltage 46V, output current 2.
5A • Direct PWM drive output • 3 built-in output top-side diodes • Built-in current limiter • Built-in FG output circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Supply voltage
Output current...