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PDF LB11972V Data sheet ( Hoja de datos )
| Número de pieza | LB11972V | |
| Descripción | 3-Phase Sensorless Motor Driver | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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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.
mFunctions
o• Three-phase sensor-less motor driver
.c• Current linear drive
• Built-in current limiting circuit
• Built-in output stage saturation preventive circuit
U• With coil counter-electromotive FG output
t4• Built-in thermal shutdown circuit
• Built-in beat lock preventive circuit
eeSpecitications
Absolute Maximum Ratings at Ta = 25°C
hParameter
Symbol
Conditions
Supply voltage
SOutput application voltage
taInput application voltage
Output current
aInternal allowable loss
VCC max
VO max
VI max
IO max
Pd max1
Independent IC
Pd max2
Mounted on a specified board.*
.DOperating temperature
Topr
Storage temperature
Tstg
* Specified board (114.3×76.1×1.6mm : Glass epoxy)
wOperating Range at Ta = 25°C
wParameter
wSupply voltage
Symbol
VCC
Conditions
Ratings
15.0
15.0
-0.3 to VCC+0.3
1.0
0.5
1.0
-30 to +85
-55 to +150
Ratings
7 to 13.8
Unit
V
V
V
A
W
W
°C
°C
Unit
V
www.DataSheet4U.com
O3005 MS PC B8-7113 No.8797-1/8
1 page  
Continued from preceding page.
Pin No.
Pin
Symbol
Pin
Voltage
4 MCOM
6 UIN
7 VIN
8 WIN
9 C1
LB11972V
Equivalent Circuit Diagram
10 C2
11 CX
Pin Description
Motor coil middle input pin.
Coil voltage waveform is detected
with reference to this voltage.
Coil waveform detection comparator
input pin
Connected to the output of each
phase via built-in resistor of 10kΩ.
Pin connected to the capacitor to
generate triangular wave.
This triangular wave is used for soft
switching of the coil output waveform.
Value of the capacitor connected to
this pin and GND in the VCO circuit,
determining the operation frequency
range and minimum operation
frequency.
12 VCOIN
VCO circuit voltage input pin.
Enters the PCOUT pin voltage after
CR filtering
Continued on next page.
No.8797-5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LB11972V.PDF ] | |
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