- 您现在的位置：买卖IC网 > PDF目录43902 > LB11822 BRUSHLESS DC MOTOR CONTROLLER, 3.1 A, DFM28 PDF资料下载
参数资料
| 型号： | LB11822 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 3.1 A, DFM28 |
| 封装： | DIP-28 |
| 文件页数： | 2/11页 |
| 文件大小： | 144K |
| 代理商： | LB11822 |
No. 7105-10/11
LB11822
4. Power save circuit
This IC enters the power save condition to decrease the current dissipation in the stop mode. In this condition, the bias
current of most of circuits is cut off. Even in the power save condition, the 5 V regulator output is given.
5. Reference clock
This is entered from the external signal source (1 MHz max) via a resistor (reference: about 5.1 k
) in series with the
XI pin. The XO pin is left open.
Input signal source levels:
Low-level voltage: 0 to 0.8 V
High-level voltage: 2.5 to 5.0 V
6. Speed lock range
The speed lock range is ±6.25% of the constant speed. If the motor speed falls inside the lock range, the LD pin goes
to “L” (open collector output). When the motor speed falls outside the lock range, the on-duty ratio of motor drive
output changes according to the speed error, causing control to keep the motor speed within the lock range.
7. PWM frequency
PWM frequency is determined from the capacity C (F) of capacitor connected to the PWM pin.
fPWM ≈ 1/(14,400 × C)
It is recommended to keep the PWM frequency at 15 kHz to 25 kHz
8. Hall input signal
The Hall input requires the signal input with an amplitude exceeding the hysteresis width (42 mV max). Considering
the effect of noise, the input with the amplitude of 100 mV or more is recommended.
9. F/R changeover
Motor rotation direction can be changed over with the F/R pin. When changing F/R while the motor is running, pay
attention to following points.
For the through current at a time of changeover, the countermeasure is taken using a circuit. However, it is
necessary to prevent exceeding of the rated voltage (30 V) due to rise of VCC voltage at a time of changeover
(because the motor current returns instantaneously to the power supply). When this problem exists, increase the
capacity of a capacitor between VCC and GND.
When the motor current exceeds the current limit value after changeover, the lower-side Tr is turned OFF. But, the
upper-side Tr enters the short-brake condition and the current determined from the motor counter electromotive
voltage and coil resistance flows. It is necessary to prevent this current from exceeding the rated current (3.1 A).
(F/R changeover at high speed is dangerous.)
10. Motor lock protection circuit
A motor lock protection circuit is incorporated for protection of IC and motor when the motor is locked.
When the LD output is “H” (unlocked) for a certain period in the start condition, the lower-side Tr is turned OFF. This
time is set with the capacity of the capacitor connected to the CSD pin. The time can be set to about 3.3 seconds with
the capacity of 10 F (variance about ±30%).
Set time (s)
≈ 0.33 × C (F)
When the capacitor used has a leak current, due consideration is necessary because it may cause error in the set time,
etc.
Cancelling requires either the stop condition or re-application of power supply (in the stop condition). When the lock
protection circuit is not to be used, connect the CSD pin to GND.
When the stop period during which lock protection is to be cancelled is short, the charge of capacitor cannot be
discharged completely and the lock protection activation time at restart becomes shorter than the set value. It is
necessary to provide the stop time with an allowance while referring to the following equation. (The same applies to
restart in the motor start transient condition.)
相关PDF资料 |
PDF描述 |
|---|---|
| LB11823M | BRUSHLESS DC MOTOR CONTROLLER, 0.04 A, PDSO36 |
| LB11847 | STEPPER MOTOR CONTROLLER, 1.75 A, PDIP28 |
| LB11868V | DISK DRIVE MOTOR CONTROLLER, PDSO20 |
| LB11870 | BRUSHLESS DC MOTOR CONTROLLER, 1.8 A, PDSO48 |
| LB11870 | BRUSHLESS DC MOTOR CONTROLLER, 1.8 A, PDSO48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LB11822-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 |
| LB11823M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Direct PWM Drive Brushless Motor Predriver for OA Products |
| LB11823M(36SOP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Controller Miscellaneous - Datasheet Reference |
| LB11824 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Direct PWM Drive Brushless Motor Predriver for On-Demand Water Heater and Air Conditioner Motors |
| LB11824M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Direct PWM Drive Brushless Motor Predriver for On-Demand Water Heater and Air Conditioner Motors |
发布紧急采购，3分钟左右您将得到回复。