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参数资料
| 型号： | LB11981 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1 A, PDSO28 |
| 封装： | 0.275 INCH, HSOP-28 |
| 文件页数： | 4/7页 |
| 文件大小： | 76K |
| 代理商： | LB11981 |
LB11981
No.6656-4/7
Pin Functions
Pin No.
Pin Name
Function
1
VCOIN
VCO circuit voltage input. Inputs the PCOUT pin voltage filtered by an RC circuit.
2
CX
The value of the capacitor between this pin and ground determines the operating frequency range and the minimum
operating frequency of the VCO circuit.
3
LKC
Connection for the lock detection circuit capacitor. The value of the capacitor between this pin and ground determines
the lock state monitoring period. The lock detection circuit can be disabled by connecting this pin to ground.
4
LAT
Lock detection circuit mode switching input.
5
INFR
Forward/reverse switching input.
6
LKO
Lock state detection signal. (A pull-up resistor is required.)
7
GND
Ground.
8
BFGO
Motor back electromotive force detection FG output (3 phases combined). (A pull-up resistor is required.)
9
RFS
Current limit sensing. The output current can be detected and current limiting applied by connecting this pin to the RF
pin.
10
RF
Lowest potential of the motor driver output transistor. The value of the resistor between this pin and ground determines
the current that flows in the output transistor.
11, 12, 14
N.C
Not connected.
13
UOUT
15
VOUT
16
WOUT
Motor driver output.
17
N.C
Not connected.
18
MCOM
Motor coil midpoint input. The coil voltage waveform is detected using this voltage as the reference level.
19
FC
Frequency characteristics correction. Closed loop oscillation in the current control system can be stopped by inserting a
capacitor between this pin and ground.
20
VCCM
Motor drive output stage power supply.
21
UIN
22
VIN
23
WIN
Coil waveform detection comparator input.
These are connected to the outputs for each phase through internal 10k
Ω resistors.
24
VCC
Power supply.
25
VREG
Internal 5V regulator output.
26, 27
TEST
Test pin. This pin must be left open during normal operation.
28
PCOUT
VCO circuit PLL output.
Truth Tables
Pin 4 (LAT) : Lock detection circuit mode switching
LAT
Mode
OPEN
Automatic recovery mode
“L”
Output latched in the off state when lock detected.
Pin 5 (INFR) : Motor rotation direction switching
INFR
Mode
OPEN or “L”
Forward
“L”
Reverse
Pin 3 (LKC) : Lock detection time setting capacitor connection
LCK
Mode
GND
Disabled
Capacitor inserted
Enabled
Pin 6 (LKO) : Lock state detection signal (A pull-up resistor is required.)
LKO
State
“H”
Lock not detected
“L”
Lock detected
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相关代理商/技术参数 |
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| LB11981-TLM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
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