Three Phase Brushless DC Motor Sensor-less Driver ICs
The LB11685AV, LV8804FV and LV8805SV are 3-phase sensor-less motor driver ICs that enable low
power consumption and low vibration. The Hall sensor-less drive allows reduction of the size of the
overall motor drive system. These ICs are suitable for use in products which require high reliability and
long life such as server and refrigerator fans.
Features
Three-phase full-wave linear drive sensor-less
motor driver (LB11685AV)
Direct PWM three-phase sensor-less motor driver
(LV8804FV & LV8805SV)
Built-in current limiter circuit
Built-in motor lock protection circuit
Built-in beat lock protection circuit
Built-in thermal shut down (TSD) circuit
Soft booting
Soft switching
Applications


Consumer Segment (White Goods)
Computing and Peripherals
End Products



Refrigerator Cooling Fans
Server Fans
Desktop Computer Fans
Benefits
Hall sensor-less
Easy manufacturing
Current limit protection
Lock protection
Beat lock protection
Thermal protection
Stability at booting
Silent
List of Application Block Diagrams
Block Diagram
Segment : Industrial
Barcode Scanner
CAN Enabled Stepper Motor Driver
General Control System
I2C Stepper Motor Driver
LIN Stepper Motor Driver
Motor Control System
PoE Point of Sales Terminal
PoE Security Camera
Slot Machine
Vending Machine
Segment : Consumer
Air Purifier
Clothes Dryer
Clothes Washer
HVAC
Induction Cooker
Microwave Oven
Refrigerator
3-Phase Sensor-less Motor Drivers
Supply
Maximum
Part Number
Voltage
Output
(V)
Current (A)
LB11685AV
4.5 to 18
1.2
LV8804FV
6 to 15
1.2
LV8805SV
6 to 15
1.2
Power
Dissipation
(W)
1.2
1.2
1.2
Circuit Structure
Linear
SSOP24J
Soft Switch - PWM SSOP20J
Soft Switch - PWM SSOP20J
To view the entire portfolio of Motor Drivers from ON Semiconductor, visit:
www.newark.com (North America) or www.farnell.com (International)
3 Phase Sensor-less Motor Drivers
1.
2.
3.
4.
5.
Silent
Soft Booting
Lock Protection
Beat Lock Protection
Thermal Shut Down
Package Evaluation Board
LB11685AVEVB
LV8804FVGEVB
LV8805SVGEVB