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参数资料
| 型号： | LB1695D |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2 A, PDIP20 |
| 封装： | HEAT SINK, DIP-20 |
| 文件页数： | 8/10页 |
| 文件大小： | 232K |
| 代理商： | LB1695D |
LB1695D
No. 6205-7/10
Description of the LB1695D
1.
Hall input circuit
The Hall input circuit is a differential amplifier with a hysteresis of 30 mV (typ.). The operating DC level must be
within the common mode input voltage range (1.5V to VCC – 1.8V). To prevent noise and other adverse influences,
the input level should be at least 3 times the hysteresis (120 to 160 mVp-p). If noise evaluation at the Hall input
shows a problem, a noise-canceling capacitor (about 0.01
μF) should be connected across the Hall input IN+ and
IN– pins.
2.
Protection circuits
2-1.
Low voltage protection circuit
When the VCC voltage falls below a certain level (VLVSD), the low voltage protection circuit cuts off the
sink-side output transistors to prevent malfunction caused by a VCC voltage drop.
2-2.
Thermal shutdown circuit
When the junction temperature rises above a certain value (TSD), the thermal shutdown circuit cuts off the
sink-side output transistors to prevent IC damage due to overheating. Design the application heat
characteristics so that the protection circuit will not be triggered under normal circumstances.
3.
FG output circuit
The Hall input signal at IN1, IN2, and IN3 is synthesized and subject to waveform shaping before appearing at this
output. The signal at FG1 has the same frequency as the Hall input, and the signal at FG2 has a frequency that is
three times higher than the Hall input.
4.
Forward/Reverse control circuit
This IC is designed under the assumption that forward/reverse (F/R) switching will not be carried out while the
motor is running. If switching is carried out while the motor is running, a feedthrough current flows in the output
and a problem will be caused regarding ASO. F/R switching should be carried out while the VM power supply is
off (motor is stopped).
5.
VCC, VM power supply
When the power supply voltage (VCC, VM) rises very quickly at power-on, a feedthrough current may flow in the
output and a problem will be caused regarding ASO. The power supply rise speed should be kept below
ΔV
CC/Δt =
0.04V/
μS and ΔV
M/Δt = 0.16V/μS. For the power-up sequence, VCC should be turned on before VM.
The sequence at power-down should be VM first, and then motor stop, and then VCC. With some motors, if VCC is
switched off immediately after VM, while the motor is still rotating due to inertia, the VM voltage may rise and
exceed the withstand voltage.
6.
Power supply stabilizing capacitors
If the VCC line fluctuates drastically, the low-voltage protection circuit may be activated by mistake, or other
malfunctions may occur. The VCC line should therefore be stabilized by connecting a capacitor of at least several
μF between V
CC and ground. Because a large switching current flows in the VM line, wiring inductance and other
factors can lead to VM voltage fluctuations. As the GND line also fluctuates, the VM line must be stabilized by
connecting a capacitor of at least several
μF between V
M and ground, to prevent malfunction or exceeding the
withstand voltage. Especially when long wiring runs (VM, VCC, GND) are used, sufficient capacitance should be
provided to ensure power supply stability.
Continued on next page
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LB16CGG01-05-BJ | 制造商:NKK 制造商全称:Nihon Kaiheiki Industry Co. Ltd. 功能描述:Standard Size Pushbuttons |
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