LB11970RV

Ordering number: ENA2095 LB11970RV Monolithic Digital IC For Fan Motor Single-phase Full-wave Driver http://onsemi.com Overview The LB11970RV is a motor driver of the single phase bipolar drive that a good direct PWM drive of the motor drive efficiency can come true easily. It is most suitable for the power supply fan of the personal computer, CPU air conditioner fan drive. Functions Single-phase full-wave drive (16V to 1.2A output transistor incorporated) Variable speed function using thermistor input and external signal incorporated →Enables silent and low-vibration variable speed control through direct PWM control with separately-excited upper Tr Current limiter circuit (limit at IO=480mA with RL=1Ω connection, the limiter value determined with Rf) Kick-back absorption circuit incorporated Low-consumption, low-loss, and low-noise drive enabled by the soft switching circuit during phase shift Regeneration Di incorporated with less external parts HB incorporated Lock protection and automatic reset functions incorporated RD (Lock detection) output Thermal shutdown circuit incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit VCC maximum supply voltage VM maximum supply voltage VCC max VM max 17 V 17 V OUT pin maximum output current OUT pin output withstand voltage HB maximum output current IOUT max VOUT max HB 1.2 A 18 V 10 mA VTH, RMI input pin withstand voltage VTH RMI max 7V P-IN i...