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參數(shù)資料
| 型號： | LB1695D |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2 A, PDIP20 |
| 封裝： | HEAT SINK, DIP-20 |
| 文件頁數(shù)： | 10/10頁 |
| 文件大?。?/td> | 232K |
| 代理商： | LB1695D |
LB1695D
No. 6205-9/10
Continued from preceding page
Because the current limiter circuit is slanted towards the ON time for turning the sink-side output on again,
the reverse current will not be so large even if a rectifying diode (without a short reverse recovery time) is
used as regenerative current absorption diode connected externally.
7-3.
Output off time setting
The output off time must be optimized for the type of motor that is being controlled. The output off time
setting is controlled by the external resistance connected to the R pin and the external capacitance connected
to the C pin. Figure 1 shows the current limiter operating waveform.
(1) Short output off time setting
Because the IC is designed internally to give a ratio of about 3:1 for the output off time and output
current ignore time, the two values cannot be set independently. If the output off time is set to a very
small value, the output current ignore time may be too short. In such a case, the external regenerative
current absorption diode acts to limit current flow by its reverse current (see section 7-2). If the output
off time is small, the diode reverse current will increase, which can lead to ASO problems.
(2) Long output off time setting
If the output off time is set to a very high value, the average current will be reduced, resulting in lower
motor startup torque. Depending on the motor type, the circuit may not change from the current limiter
operating state to the normal rotation state.
Figure. 1
Current limiter operating waveform
toff
tsm
tso
2.0V
0.4V
0.0V
0.5V
0.0V
RF pin voltage
C pin voltage
Continued on next page
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1695M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DC Fan Motor Driver |
| LB1696 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:3-phase Brushless Motor Driver |
| LB1696-E | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)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 |
| LB16CGG01 | 功能描述:按鈕開關(guān) SPDT ON-ON GRAY ROUND BODY ONLY RoHS:否 制造商:C&K Components 觸點(diǎn)形式:2 NC - 2 NO 開關(guān)功能:ON ? OFF 電流額定值:4 A 電壓額定值 AC:12 V to 250 V 電壓額定值 DC:12 V to 50 V 功率額定值: 安裝風(fēng)格:Through Hole 照明:Illuminated 照明顏色:None IP 等級:IP 40 端接類型:Solder 觸點(diǎn)電鍍:Silver 執(zhí)行器:Square 蓋顏色: 封裝: 可燃性等級:UL 94 V-0 |
| LB16CGG01-05-BJ | 制造商:NKK 制造商全稱:Nihon Kaiheiki Industry Co. Ltd. 功能描述:Standard Size Pushbuttons |
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