Ordering number : ENN8797
LB11972V
Monolithic Digital IC
3-Phase Sensorless Motor Driver for
Fan Motor Driver for Refrigerator
Overview
The LB11972V is a 3-phase full-wave current linear sensorless motor driver.
It is optimal for refrigerator fan motor drive.
Functions
• Three-phase sensor-less motor driver
• Current linear drive
• Built-in current limiting circuit
• Built-in output stage saturation preventive circuit
• With coil counter-electromotive FG output
• Built-in thermal shutdown circuit
• Built-in beat lock preventive circuit
Specitications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Supply voltage
Output application voltage
Input application voltage
Output current
Internal allowable loss
VCC max
VO max
VI max
IO max
Pd max1
Independent IC
Pd max2
Mounted on a specified board.*
Operating temperature
Topr
Storage temperature
Tstg
* Specified board (114.3×76.1×1.6mm : Glass epoxy)
Operating Range at Ta = 25°C
Parameter
Supply voltage
Symbol
VCC
Conditions
Ratings
Unit
15.0
V
15.0
V
-0.3 to VCC+0.3
V
1.0
A
0.5
W
1.0
W
-30 to +85
°C
-55 to +150
°C
Ratings
Unit
7 to 13.8
V
O3005 MS PC B8-7113 No.8797-1/8