LB11683V Datasheet, PDF (5/7 Pages) Sanyo Semicon Device – Monolithic Digital IC Three-Phase Sensorless Motor Driver

Pin Functions
Pin No. Symbol
24
UOUT
1
VOUT
2
WOUT
23
RF
Pin Voltage
5
VCC
8 to 13.8V
4
MCOM
6
UIN
7
VIN
8
WIN
9
C1
10
C2
LB11683V
Equivalent Circuit Diagram
VCC
3.9Ω
30kΩ
3.9Ω
30kΩ ₂₃
10kΩ
24
6
1
7
2
8
20µF
Description
3-phase motor driver output
Minimum potential of 3-phase motor driver
output transistor.
Constant current control is made through
detection of this voltage. The current limiter
also functions by detecting this potential.
VCC
24 1 2
6
10kΩ
7
8
200Ω
2kΩ
200Ω
4
200Ω
Power supply
Motor coil neutral point input pin.
The coil voltage waveform is detected with
reference to this voltage.
Coil waveform detection comparator input pin.
This pin is connected to each phase output
through the internal 10kΩ resistor.
15µF 15µF
VCC
VREG
9
5µA
10
1kΩ
Triangular wave generating capacitor
connection pin.
This triangular wave performs soft-switching of
the coil output waveforms.
2S
1/2VREG-VF
11
CX
VCC
300Ω
VREG
100µA
In the VCO circuit, the operation frequency
range and minimum operation frequency are
determined by means of the capacitor value
connected this pin and ground.
12
VCOIN
11
10kΩ
1.75V
VCC
12
VREG
VCO circuit voltage input pin.
The PCOUT pin voltage is input via CR filter.
50kΩ
50µA 50µA
Continued on next page.
No. A0674-5/7