DESCRIPTION
CKM431 is an integrated 12V-operationable 3-phase
sensorless  BLDC  motor  driver  with  advanced
protections  which  include  soft-start  circuit,  thermal
shutdown,  lock  protection  and  output  current  limit. 
CKM431 is  specially  designed  for  sensorless  motor
and  ideal  for  fan  motor  control  requiring  high  power
efficiency. And a direct PWM-control interface is built
in  to  smooth  the  fan  speed  from  low  to  high.
Peripheral devices are limited to few so that it is not
difficult to make the PCB layout tight and small. 
CKM431 uses  a  new  multi-power  BCD  technology,
requiring  a  single  power  supply  of  VDD  =  5~12V, 
packed  as  TSSOP16  package  and  displaying
excellent  power  efficiency,  is  a  perfect  solution  for
comprising  a  compact,  low-cost  sensorless  BLDC
motor system.