Overview

Single-phase full-wave drive design and a compact package make these ICs optimal for small fans (especially CPU cooling fans). Low switching noise and effective motor drive are further advantages. The LB1862M features a lockup detection output (RD) and the LB1962M features a rotation detection output (FG).

Functions

• Support for 5V/12V dual power supply voltage

• Built-in regenerative circuit allows

use of reverse connection protection diode

• Built-in Hall amplifier with hysteresis

(supports core without auxiliary electrode)

• Built-in lockup protection and automatic recovery circuits

• Latch-type lockup detection output (RD) is

Low during rotation and High during stop (LB1862M)

• Rotation detection output (FG) (LB1962M)

• Hall bias pin and start/stop pin

allow reduced current drain in standby mode

• Built-in thermal protection circuit