UTC UA9406
LINEAR INTEGRATED CIRCUIT
2-PHASE HALF-WAVE MOTOR
PREDRIVER
DESCRIPTION
The UTC UA9406 is a 2-phase, half-wave motor
predriver suited for fan motors.
FEATURES
*Lock detection and rotational speed sensing
mechanisms are built in.
*Compact 8-pin SOP package reduces the number of
external components required.
*Automatic restart when the motor lock is undone.
*Hall inputs have a hysteresis.
SOP-8
BLOCK DIAGRAM
Vcc
8
7
6
5
Autornatic
reset
LOGIC
Hall
amp
REGULATOR
Rock
Det
1
2
3
4
Hall
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R109-014,A