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參數(shù)資料
| 型號： | LB1860 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Variable Speed Fan Motor Driver |
| 中文描述： | 變速風(fēng)扇電機(jī)驅(qū)動器 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 79K |
| 代理商： | LB1860 |
1
When a fan is rotating, the capacitor is charged at 4 μA (typ) and discharged through the C with pulses according to the
rotational speed.
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
.
When the output is turned OFF, discharge occurs through the C at 0.5 μA (typ). If the lock is not released when the C voltage
drops to V
TH
2, the capacitor is charged to V
TH
1 again. (At this moment, the output is turned ON.) These operations
2
and
3
repeated at a cycle of approximately t
on
: t
off
= 1:6 protect a motor.
If the lock is released when the C voltage drops to V
TH
2, the output is turned ON, starting rotation.
Open collector output (Drive mode: ‘‘L’’, Stop mode: ‘‘H’’)
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 μ to 0.1 μF between B1 and B2.
2
Connect a capacitor of 0.001 μ to 0.01 μF between OUT and B.
If output causes oscillation, add a resistor of 200
to 1 k
in series with a capacitor.
Shutdown the driver output in case of coil short-circuiting and abnormal IC heating.
2
3
4
(6) Rotation detect signal (RD pin)
(7) Radio noise reducing (Pins B1, B2)
(8) Thermal shutdown function
Thermistor-controlled Application Circuit Example
Output Timing Chart
Noise elimination
capacitor
Figure 2
(
Unit (resistance:
, capacitance: F)
): MFP14S
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 ‘t
off
’ 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 in a 0 of ‘t
off
’. This
means the 100% duty.
t = –C2
c
R2
c
1n
(V
IN
– V
Rt
)
V
IN
– V
Ct
.............
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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PDF描述 |
|---|---|
| LB1860M | Variable Speed Fan Motor Driver |
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| LB1862 | Fan Motor Single-Phase Full-Wave Driver |
| LB1863M | Two-Phase Unipolar Brushless Motor Driver Automatic Recovery Type Circuit in a Miniature Flat Package |
| LB1868M | RES 10.0MEGOHM MTL FLM.40W 1% TR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1860-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 |
| LB1860M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Variable Speed Fan Motor Driver |
| LB1860M-TLM-E | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 FAN MOTOR 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 |
| LB1860M-TLM-H | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 FAN 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 |
| LB1861 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Variable Speed Fan Motor Driver |
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