- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄376526 > D305A (Electronic Theatre Controls, Inc.) Electroluminescent Lamp Driver IC PDF資料下載
參數(shù)資料
| 型號(hào)： | D305A |
| 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(dòng)IC |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大小： | 401K |
| 代理商： | D305A |
III. Controlling EL Brightness through Clock Pulse Width Modulation (Option 2)
Pulse width modulation of the external HF input signal also may be used to regulate the brightness of the EL
lamp. As the positive duty cycle of the LF input signal is increased from 15% to 100%, the peak voltage of
the output waveform decrease incrementally to zero output as the inductor charging period is affected by the
HF duty cycle. Lamp dimming is thus achieved with pulse width modulation of the HF input signal to the
D305A. This scheme may also be used inversely to regulate lamp brightness over the life of the battery or to
compensate for lamp aging. Figure 8 shows a typical dimming curve with this technique. The recommended
HF duty cycle range is from 10% to 95%. Clocking frequency can range from 20 KHz to 35 KHz. The
maximum amplitude of the clock signal may range from 1.0V to Vcc.
Va
Cs
Vb
E
Vcc
L
GND
Rf
CLF
CHF
D305A
1
2
3
4
5
10
9
8
7
6
OFF
ON
2.2 nF
(200 V)
10 k
3.0 V
BAS21
EL Lamp
800 Hz
15% positive duty
1.0V Min
0.2V Max
1.0V Min
0.2V Max
27 KHz
15% to 100%
positive duty PWM
11
0
5
10
15
20
25
0%
10%
20%
30%
CHF Clock Input Duty Cycle
40%
50%
60%
70%
80%
90%
0
20
40
60
80
100
Luminance
Current
L
Figure 8: Dimming through HF Clock Input Duty Cyle
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| D306A | Electroluminescent Lamp Driver IC |
| D30E60 | Fast Switching EmCon Diode |
| D30L60 | CAP 100PF 200V 10% X7R RAD.20 .20X.20 TR-16 M-MIL-PRF-39014 STANDOFF |
| D30SC4 | Schottky Rectifiers (SBD) (40V 30A) |
| D30SC4M | Schottky Rectifiers (SBD) (40V 30A) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| D305EWA | 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(zhǎng):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 |
| D305RP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Short Circuit Protected Regulated, 3W SIP DC/DC Converters |
| D305RW | 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 |
| D30-6 | 制造商:Visual Communications Company (VCC) 功能描述:T-1 1/4 Bi-Pin Lamp |
| D-306-03 | 功能描述:熱收縮管和套管 D-306 SER 8.76MM RoHS:否 制造商:3M Electronic Specialty 類型:Tubing 材料:Polyolefin, Flexible 顏色:Clear 最低收縮溫度:+ 100 C 恢復(fù)直徑: 長(zhǎng)度:100 ft 內(nèi)徑:1.5 in 收縮率:2:1 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。