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参数资料
| 型号： | LB1946 |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.75 A, PDFM28 |
| 封装： | 0.500 INCH, DIP-28 |
| 文件页数： | 7/16页 |
| 文件大小： | 108K |
| 代理商： | LB1946 |
LB1946
No.7115-15/16
2. Notes on the MD pin
If slow decay mode is set up by setting the D4 and D10 bits in the input serial data to 1, the MD pin must be shorted
to GND.
If the decay mode is set up by setting the D4 and D10 bits in the input serial data to 0, decay mode can be set with the
MD pin.
When the VCC=5V specifications are used, the setting voltage range for mixed decay mode is 1.6 to 3.9V.
When the VCC=3.3V specifications are used, the setting voltage range for mixed decay mode is 1.2 to 2.5V.
If mixed decay mode will not be used with the fast decay mode setting, either:
Short the MD pin to GND to select fast decay mode, or
Short the MD pin to VCC to select slow decay mode.
3. Usage Notes
Notes on the VREF pin
Since the VREF pin inputs the reference voltage used to set the current, applications must be designed so that noise
does not occur at this pin.
Notes on the GND pins
Since this IC switches large currents, care is required with respect to the GND pins.
The PCB pattern in sections where large currents flow must be designed with low impedances and must be kept
separate from the small-signal system.
In particular, the GND terminals of the E pin sense resistor (RE) and external Schottky barrier diode GND terminals
must be located as close as possible to the IC GND. The capacitor between VCC and ground and between VBB and
GND must be as close as possible to the corresponding VCC and VBB pin in the pattern.
Power on sequence
When turning the power systems on
VCC→logic level inputs (CLK, DATA, SET, and ST) →VREF→VBB
When turning the power systems off
VBB
→VREF→logic level inputs (CLK, DATA, SET, and ST) →VCC
Note that if the power supply for the logic level inputs is on when the VCC power supply is off, a bias with an
unstable state will be applied to the protection diodes at the VCC pins, and this can cause incorrect operation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LB1946_07 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PWM Current Control Stepping Motor Driver |
| LB1946_12 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PWM Current Control Stepping Motor Driver |
| LB1946-E | 功能描述:马达/运动/点火控制器和驱动器 10-45VStepping Motor Driver 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 |
| LB1947 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PWM Current Control Type DC Motor Driver |
| LB1947_09 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PWM Current Control Type Bidirectional Motor Driver |
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