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参数资料
| 型号： | LB1695 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2 A, PDIP30 |
| 封装： | 0.400 INCH, DIP-30 |
| 文件页数： | 6/9页 |
| 文件大小： | 153K |
| 代理商： | LB1695 |
LB1695
No.5678-6/9
Continued from preceding page.
Pin No.
Pin name
Pin voltage
Function
Equivalent circuit
20
F/R
0.0 V min
VCC max
Forward/reverse control
20
VCC
20k
10k
10k
10k
21
GND
Ground for all circuits other than the
output block.
The lowest potential of the output
transistors will be the potential of the RF
pin.
LB1695 Functional Description
1. Hall element input circuits
The Hall element input circuits are differential amplifiers with a hysteresis of about 30mV (typical). The operating DC
level must be within the common-mode input voltage range (1.5V to VCC 1.8V). We recommend providing input
levels that exceed the hysteresis by at least a factor of three (120 to 160mVp-p) to assure that circuit operation is not
affected by noise. If the ability to withstand noise is determined to be a problem during noise evaluation or other testing,
insert capacitors (of about 0.01
F) between the Hall input IN+ and IN pins.
2. Protection circuit
2.1 Low-voltage protection circuit
The sink side output transistors are turned off if the VCC voltage falls below the stipulated voltage (VLVSD). This
circuit prevents incorrect operation when the VCC voltage is reduced.
2.2 Thermal shutdown circuit
The sink side output transistors are turned off if the junction temperature exceeds the stipulated temperature (TSD).
This circuit prevents the IC from being destroyed by overheating. Applications must be designed so that this circuit
does not operate except in unusual situations.
3. FG output circuit
The LB1695 combines the IN1, IN2, and IN3 inputs and then wave shapes the combined signal. The FG1 output has
the same frequency as the Hall inputs, and the FG2 output has a frequency three times that of the Hall inputs.
4. Forward/reverse control circuit
This circuit was designed with the assumption that the direction will not be switched from the F/R pin while the motor
is turning. If the direction is switched while the motor is turning, through currents will flow in the output and ASO will
become a problem. We recommend only using F/R switching when the VM power supply is in the off state, i.e. with the
motor in the stopped state.
5. VCC and VM power supplies
If the speed with which the power-supply voltages (VCC and VM) rise when power is first applied is too fast, through
currents will flow in the output and ASO will become a problem. Applications must assure that the power supply rise
speeds do not exceed 0.04V/
s (VCC/t) and 0.16V/s (VM/t). When applying power, it is desirable to apply
VCC first and then apply VM. When turning the power off, it is desirable to first turn off VM, then to wait for the motor
to stop, and only then turn off VCC. If VCC is turned off after VM is turned off but while the motor is still turning due
to inertia, certain motor types may cause the VM voltage at the IC to rise and generate voltages that exceed the voltage
handling capacity of the IC.
相关PDF资料 |
PDF描述 |
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| LB1825 | BRUSHLESS DC MOTOR CONTROLLER, 2 A, PDIP28 |
| LB1830M | BRUSH DC MOTOR CONTROLLER, 0.5 A, PDSO10 |
| LB1830M | BRUSH DC MOTOR CONTROLLER, 0.5 A, PDSO10 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LB1695D | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:LB1695D |
| LB1695M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:DC Fan Motor Driver |
| LB1696 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:3-phase Brushless Motor Driver |
| LB1696-E | 功能描述:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| LB16CGG01 | 功能描述:按钮开关 SPDT ON-ON GRAY ROUND BODY ONLY RoHS:否 制造商:C&K Components 触点形式:2 NC - 2 NO 开关功能:ON ? OFF 电流额定值:4 A 电压额定值 AC:12 V to 250 V 电压额定值 DC:12 V to 50 V 功率额定值: 安装风格:Through Hole 照明:Illuminated 照明颜色:None IP 等级:IP 40 端接类型:Solder 触点电镀:Silver 执行器:Square 盖颜色: 封装: 可燃性等级:UL 94 V-0 |
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