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參數(shù)資料
| 型號： | D365A |
| 英文描述： | EL Drivers(EL驅(qū)動器) |
| 中文描述： | EL驅(qū)動（薩爾瓦多驅(qū)動器） |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 324K |
| 代理商： | D365A |
10
IV. Controlling EL Brightness Through Clock Pulse Width Modulation
Pulse-width modulation of an external clock signal that controls the inductor oscillating frequency may also be used to
regulate the brightness of an EL lamp. In this circuit, when the positive duty cycle of the external clock is at 25%, the
lamp is at full brightness. Incremental dimming occurs as the positive duty cycle is increased to as high as 75%. This
scheme may also be used inversely to regulate lamp brightness over the life of the battery or to compensate for lamp
aging. In these cases, positive duty cycle may be incrementally increased as part of a feedback control in the application.
(Note: Operation at duty cycles higher than 75% or lower than 25% is not recommended.)
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8
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L+
VOUT
V+
GND
L-
CHF
E
L
D365
V+
BASE
EL Lamp
0.1
μ
F
pnp transistor
V+
OFF
ON
HF CLK
1.0V Min
0.2V Max
V. Two-Level Dimming Control
Two level dimming may be achieved with the circuit below. When DIM is low, the external PNP transistor is saturated
and the EL lamp runs at full brightness. When DIM is high, the external PNP turns off and the 47
resistor reduces the
voltage at (V+) and dims the EL lamp.
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2
3
4
8
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5
L+
VOUT
V+
GND
L-
CHF
E
L
D365
BASE
EL Lamp
CHF
capacitor
0.1
μ
F
pnp transistor
V+
OFF
ON
V
bat
47
1k
DIM
2N3906
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| D365A | Electroluminescent Lamp Driver IC |
| D370 | Digital Uncooled DFB（distributed-feedback） Laser Module(數(shù)字常溫DFB（分布式反饋）激光模塊) |
| D371A | EL Drivers(EL驅(qū)動器) |
| D371A | Electroluminescent Lamp Driver IC |
| D371 | Digital Uncooled DFB（distributed-feedback） Laser Module(數(shù)字常溫DFB（分布式反饋）激光模塊) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| D-365F | 制造商:Triad Magnetics 功能描述: |
| D365MS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IN-PHASE 4-WAY DIVIDERS/COMBINERS, POWER SMA/TYPE N 0.5-18 GHz |
| D3660 | 制造商:Dagnall Electronics 功能描述:TRANSFORMER 50VA 10V |
| D3660 | 制造商:Dagnall Electronics 功能描述:TRANSFORMER 50VA 10V |
| D3661 | 制造商:Dagnall Electronics 功能描述:TRANSFORMER 50VA 2 X 12V |
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