LB1861-E Datasheet, PDF (1/6 Pages) ON Semiconductor – Variable Speed Fan Motor Driver

Ordering number: EN3519A
Monolithic Digital IC
LB1860,1860M,1861,1861M
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.
Package Dimensions
unit: mm
3098B-DIP10S
[LB1860, 1861]
Features and Functions
. _{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.
. _{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 V
power supply by changing an external resistor.
. (Strong protection against power supply surge)
Connectable direct to a Hall element
unit: mm
3111-MFP14S
SANYO : DIP10S
[LB1860M, 1861M]
SANYO : MFP14S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
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73096HA(II)/4060TA,TS No.3519-1/6