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参数资料
| 型号： | LB1860M |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PDSO14 |
| 封装： | MFP-14 |
| 文件页数： | 5/6页 |
| 文件大小： | 78K |
| 代理商： | LB1860M |
1 When a fan is rotating, the capacitor is charged at 4 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 × V
IN.
3 When the output is turned OFF, discharge occurs through the C at 0.5 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 repeated at a cycle of approximately t
on :toff = 1:6 protect a motor.
4 If the lock is released when the C voltage drops to V
TH2, the output is turned ON, starting rotation.
(6) Rotation detect signal (RD pin)
.
Open collector output (Drive mode: ‘‘L’’, Stop mode: ‘‘H’’)
(7) Radio noise reducing (Pins B1, B2)
.
Base pin of Darlington connection output transistor
.
If radio noises need to be processed properly, the following actions should be taken:
1 Connect a capacitor of 0.01 to 0.1 F between B1 and B2.
2 Connect a capacitor of 0.001 to 0.01 F between OUT and B.
If output causes oscillation, add a resistor of 200
to1k in series with a capacitor.
(8) Thermal shutdown function
.
Shutdown the driver output in case of coil short-circuiting and abnormal IC heating.
Thermistor-controlled Application Circuit Example
Output Timing Chart
Noise elimination
capacitor
Figure 2
(
): MFP14S
Unit (resistance:
, capacitance: F)
Use of a thermistor enables motor speed to
be sensitive to the operating ambient
temperature.
The Rt pin voltage at Ta = 20 °C has
1.42 ms of ‘toff’ as calculated in expression
4 with the application constant of Figure 2.
However, the Rt pin voltage at Ta = 40 °C
is reduced into less than the Vct (= 1.3 V)
level, which results ina0of‘toff’. This
means the 100% duty.
t = –C2 c R2 c 1n
(VIN –VRt)
VIN –VCt
............. 4
Hall input
Discharge pulse
Ct voltage
Output ‘off’ signal
OUT1 current
OUT2 current
All-phase ON waveform
Control output waveform
Figure 3
LB1860,1860M,1861,1861M
No.3519-5/6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LB1860M-TLM-E | 功能描述:马达/运动/点火控制器和驱动器 FAN MOTOR 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 |
| LB1860M-TLM-H | 功能描述:马达/运动/点火控制器和驱动器 FAN 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 |
| LB1861 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Variable Speed Fan Motor Driver |
| LB1861-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 |
| LB1861M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Variable Speed Fan Motor Driver |
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