Product Summary

The LB1861M-TLM-E is a variable speed fan motor driver. The LB1861M-TLM-E driver is for two-phase unipolar drive DC brushless fan motors. The LB1861M-TLM-E has functions such as driving, lock protection, restart and speed control.

Parametrics

LB1861M-TLM-E absolute maximum ratings: (1)Maximum input current ICC max t % 20 ms: 200 mA; (2)Output current IOUT: 1.5 A; (3)RD flow-in current IRD: 10 mA; (4)RD supply voltage VRD: 50 V; (5)Allowable power dissipation Pd1 max: 1.1 W; (6)Operating temperature Topr: -30 to +80 °C; (7)Storage temperature Tstg: -55 to +125 °C.

Features

LB1861M-TLM-E features: (1)Two-speed mode select function requiring less external component additions: Full speed and Low speed. Or, thermistor-controlled continuous variable-speed function according to ambient operation temperatures; (2)Motor starts rotating at a low speed; (3)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); (4)Enables low-level noise protection with chip capacitor. . Built-in thermal shutdown circuit Built-in rotation detect function; (5)(Strong protection against power supply surge)Connectable direct to a Hall element.

Diagrams

LB1861M-TLM-E pin connection