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| 型号： | LB1669 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PDIP10 |
| 封装： | SDIP-10 |
| 文件页数： | 5/6页 |
| 文件大小： | 189K |
| 代理商： | LB1669 |
LB1669
No. 3513-5/6
(4) Output protection function (C pin)
Capacitor pin used in forming an automatic recovery circuit. If rotation is stopped due to overload, the pin voltage level
increases and then forces the output to become inactive. In this case, after proper load adjustment, the output returns to the
‘drive’ mode from the ‘stop’ mode automatically. By changing the capacitor value, the lock detect time period can be set.
For 1
F lock detection time about 2 seconds
lock protection time (output ON) about 1 second
(output OFF) about 6 seconds
1 When a fan is rotating, the capacitor is charged at 3 A (typ) and discharged through the C with pulses according to the
rotational speed.
2 When a fan is locked, no discharge occurs through the C and the C voltage rises, turning OFF the output at 0.8 x V
IN .
3 When the output is turned OFF, discharge occurs through the C at 0.44 A (typ). If the lock is not released when the C
voltage drops to VTH2, the capacitor is charged to VTH1 again. (At this moment, the output is turned ON.)
These operations
2 and 3 are repeated at a cycle of approximately ton : toff =1 : 6 toprotect the motor.
4 If the lock is released when the C voltage drops to V
TH2, the output is turned ON, starting rotation.
(5) Rotation detect signal (RD pin)
Open collector output (Drive mode: ‘‘L’’, Stop mode: ‘‘H’’)
(6) Radio noise reducing (pins B1 and B2)
These are the base pins for Darlington connected output transistors.
If radio noise is a problem, add a capacitor of 0.01 to 0.1
F or less.
(7) Thermal shutdown function
Shutdown the driver output in case of coil short-circuiting and abnormal IC heating.
Automatic Recovery Circuit C Pin Voltage
Lock
Lock released
Rotation
Output on
Output off
Output on
Output off
Rotation
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相关代理商/技术参数 |
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| LB1669M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:2-Phase Unipolar Brushless Motor Driver |
| LB1670 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| LB1670M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Driver for Brushless, Sensorless Motors |
| LB1671M | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
| LB1672 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Brushless-Sensorless Motor Driver |
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