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參數(shù)資料
| 型號(hào)： | LB1660 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 2-Phase Unipolar Brushless Motor Drivers |
| 中文描述： | 二相單極無(wú)刷電機(jī)驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 8/9頁(yè) |
| 文件大?。?/td> | 271K |
| 代理商： | LB1660 |
(2) CR time constant setting method
1
Bias current of CR pin and effect of leakage of C. The value of the charge current at the threshold point is V
IN
×
0.2/R3. Therefore, this value and the leakage of C must be large enough for the bias current.
2
The CR pin voltage must not exceed 0.6
×
V
IN
(LB1660N, 1664N) or 0.8
×
V
IN
-0.3V (LB1661, 1665), until the normal
rotational speed of a fan is reached and while a fan keeps the normal rotational speed; a malfunction may be caused by
instantaneous drop of power supply.
3
It should be noted that the CR pin voltage is varied with the combination C and R, even if the CR time constant is the
same.
The allowable CR setting value is given in the diagram.
(3) Restart after lock detection
The LB1660 series are so designed that when motor lock
is detected and the output stage transistor is turned off the
drive-off state is kept even after motor lock is released.
The method of restart is shown below.
1
Turn off the power supply and turn on again. Turn
on after the V
CR
has dropped enough.
2
Set the CR pin voltage to be less than 1 V, and then
turn off the power supply in order to cause the lock
detect function to return to normal. (The CR pin can
be also used to provide on-off control.)
Output transistor lock
Pulse of
1
Pulse of
2
Generation of discharge pulse
Current drain, I
CC
– mA
I
I
–
V
IN
– I
CC
L
O
O
(
V
O
(sat) – I
O
Output current, I
O
– A
t – R
Resistance, R –
LB1660N, 1661, 1664N, 1665
No.2551-8/9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LB1660N | 2-Phase Unipolar Brushless Motor Drivers |
| LB1662D | DC Fan Motor Drivers |
| LB1663 | 2-Phase Unipolar Brushless Motor Drivers |
| LB1663M | 2-Phase Unipolar Brushless Motor Drivers |
| LB1667 | Two-Phase Unipolar Drive Brushless Motor Drivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB-1660 | 制造商:Bud Industries Inc 功能描述: |
| LB1660N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:2-Phase Unipolar Brushless Motor Drivers |
| LB1661 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:2-Phase Unipolar Brushless Motor Drivers |
| LB1662D | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DC Fan Motor Drivers |
| LB1662M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DC Fan Motor Drivers |
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