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LB1861 - Two-Phase Half-Wave Variable Speed Fan Motor Driver

Download the LB1861 datasheet PDF. This datasheet also covers the LB1860 variant, as both devices belong to the same two-phase half-wave variable speed fan motor driver family and are provided as variant models within a single manufacturer datasheet.

Key Features

  • 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. 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 c.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LB1860-ONSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number LB1861
Manufacturer onsemi
File Size 150.00 KB
Description Two-Phase Half-Wave Variable Speed Fan Motor Driver
Datasheet download datasheet LB1861 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LB1861 Variable Speed Fan Motor Driver Sanyo
LB1861M Variable Speed Fan Motor Driver Sanyo
LB1860 Variable Speed Fan Motor Driver Sanyo
LB1860M Variable Speed Fan Motor Driver Sanyo
LB1862 Fan Motor Single-Phase Full-Wave Driver Sanyo

Other Datasheets by onsemi

Part Number Description
LB1861M Two-Phase Half-Wave Variable Speed Fan Motor Driver
LB1860 Two-Phase Half-Wave Variable Speed Fan Motor Driver
LB1860M Two-Phase Half-Wave Variable Speed Fan Motor Driver
LB1862 Single-Phase Full-Wave Driver
LB1863M Two-Phase Brushless Motor Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LB1860, LB1860M, LB1861, LB1861M Monolithic Digital IC Two-Phase Half-Wave Variable Speed Fan Motor Driver 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 component 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.