LB1860
Overview
The LB1860 series ICs are drivers for two-phase unipolar drive DC brushless fan motors. They have functions such as driving, lock protection, restart and speed control.
Features
- Two-speed mode select function requiring less external ponent additions : Full speed and Low speed. Or, thermistor-controlled continuous variable-speed function according to ambient operation temperatures. Motor starts rotating at a low speed.
- Motor lock protection and automatic return circuit built in
- Output transistors: Output current IO = 1.5 A, output circuit protection Zener diodes (LB1860 : M-Vz = 57 V/ LB1861: M-Vz = 32 V) Enables low-level noise protection with chip capacitor.
- Built-in thermal shutdown circuit Built-in rotation detect function (Drive mode: ‘‘L’’, Stop mode: ‘‘H’’)
- The LB1860 series can be operated from either 12 V or 24...
