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參數(shù)資料
| 型號： | LB8502M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Monolithic Digital IC DC Fan Motor Speed Control IC |
| 中文描述： | 單片數(shù)字集成電路直流風(fēng)扇電機轉(zhuǎn)速控制IC |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 106K |
| 代理商： | LB8502M |
LB8502M
No.8337-8/11
3. LIM pin
The LIM pin external component values can be derived as follows for the case where a motor whose maximum speed
of 10,000rpm is to be achieved with an 80% duty, and a minimum speed of 3000rpm is to be set.
Ra = minimum speed/full speed = 3000/10,000 = 0.3
Full-speed duty × Ra = 0.8
×
0.3 = 0.24
LIM pin voltage = 4
×
0.24
≈
1V
From the above, the required LIM pin voltage is about 1V.
To generate this 1V level by resistor dividing the 6 V regulator level, the resistor ratio will be 5: 1, and the resistors
connected to the LIM pin will have the following values.
Between 6VREG and LIM pin : 50k
Between LIM pin and GND : 10k
LIM pin voltage
0
10000
12000
8000
6000
4000
2000
0V
1V
4V
Minimum
speed
CTL Duty(PWM duty)
(RPM)
0%
60%
40%
24%
20%
80%
100%
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB8502MC-AH | 制造商:ON Semiconductor 功能描述:OTHERS - Tape and Reel 制造商:ON Semiconductor 功能描述:Motor / Motion / Ignition Controllers & Drivers OTHERS |
| LB8503V | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Digital IC DC Fan Motor Speed Control IC |
| LB8503V-MPB-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LB8503V-TLM-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 BRUSHLESS MOTOR DRIVER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LB8505AE-R2 | 制造商:Black Box Corporation 功能描述:10/100 ETHERNET SWITCH 5 PORT |
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