LB11851FA - ON Semiconductor

LB11851FA Microprocessor Fan Motor Interface Driver

Ordering number: ENA2092 LB11851FA Monolithic Digital IC Microprocessor Fan Motor Interface Driver http://onsemi.com Overview The LB11851FA provides an interface between a microcontroller motor control signal and external MOS transistors. This device can implement a microprocessor fan driver with a minimal number of external components. The LB11851FA is o.

Features

• Fan motor interface driver function (FGIN) ⇒ This IC accepts a signal from a microcontroller and interfaces to external power transistors (PMOS and NMOS) to provide high-efficiency low-power single-phase full-wave drive.
• Variable speed input pin (PWMIN) ⇒ PMOS side PWM control NMOS side current regeneration using slow decay is used to achieve quite high-speed control.
• Built-in kickback absorption circuit (OUT1P/2P) ⇒ This circuit absorbs the kickback current that is generated at phase switching or power on/off to achieve smooth current regeneration and protect the external transistors ag.