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參數(shù)資料
| 型號： | D306A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Electroluminescent Lamp Driver IC |
| 中文描述： | 電致發(fā)光燈驅(qū)動IC |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 410K |
| 代理商： | D306A |
11
II. Controlling EL Brightness through Clock Pulse Width Modulation (Option 1)
Pulse width modulation of the external LF input signal may be used to regulate the brightness of the EL
lamp. Figures 4, 5, and 6 below demonstrate examples of the D306A output waveform with pulse width
modulation of the LF input signal. As the positive duty cycle of the LF input signal is increased from 10% to
100%, the charging period of the output waveform decreases, and the peak voltage of the output waveform
also decreases towards zero output. Therefore, incremental dimming occurs as a result of the wave-shaping
changes. This scheme may also be used inversely to regulate lamp brightness over the life of the battery or
to compensate for lamp aging. Figure 7 shows a typical dimming curve with this technique. Operation at
duty cycles lower than 10% is not recommended. Clocking frequency can range from 400 Hz to 2000 Hz.
The maximum amplitude of the clock signal may range from 1.0V to Vcc.
Figure 4: LF Input Duty Cycle = +10%
Figure 5: LF Input Duty Cycle = +50%
Figure 6: LF Input Duty Cycle = +75%
Figure 7: Dimming through LF Clock Input Duty Cyle
BAS21
2.2nF
(200V)
10 kOhm
ON
OFF
6.5V
1
2
3
4
5
6
7
8
CLF
CHF
Rf
Cs
Va
Vb
Vcc
NC
E
L
NC
GND
NC
NC
NC
NC
16
15
14
13
12
11
10
9
EL Lamp
5.0V
200V
800 Hz
10% to 100%
positive duty PWM
1.0V Min
0.2V Max
32 kHz
10% positive duty
1.0V Min
0.2V Max
D306A
0
4
8
12
16
20
0%
10%
20%
30%
40%
50%
60%
70%
80%
90% 100%
LF Clock Input Duty Cycle
L
0
30
60
90
120
150
C
Luminance
Current
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| D306EWA | 功能描述:LED 顯示器和配件 Orange Dual 7 Segment RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數(shù)位數(shù)量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
| D306RW | 制造商:MPD 制造商全稱:MicroPower Direct, LLC 功能描述:Single & Dual Output 3W SIP, Wide Input DC/DC Converters |
| D306SURWA/S530-A3 | 功能描述:LED 顯示器和配件 Hyper Red Dual 7 Segment RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數(shù)位數(shù)量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
| D3070 | 制造商:Dagnall Electronics 功能描述:TRANSFORMER 100VA 2 X 9V |
| D3070 | 制造商:Dagnall Electronics 功能描述:TRANSFORMER 100VA 2X 9V |
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