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參數(shù)資料
| 型號： | 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IC |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 401K |
| 代理商： | D305A |
9
D305A Design Ideas
I. Controlling Output Frequency Using External Clock Signals
External clock signals may be used to control the D305A oscillator frequencies instead of adding external
passive components. When clocking signals provide both the inductor charging (HF) and lamp output (LF)
oscillator frequencies to drive the D305A, the CLF, CHF, Rf, and CRf components are no longer required.
A sample configuration demonstrating this cost-saving option is shown below.
In this configuration, the lamp frequency is controlled by the signal applied to the CLF pin. An internal
divider network in the IC divides the frequency of the LF input signal by two. Thus, to get a 400 Hz AC
output waveform to drive the EL lamp, an 800 Hz square-wave input signal should be connected to the CLF
pin. Input clocking frequencies may range from 400 Hz to 2000 Hz, with 15-20% positive duty cycle for
optimum brightness. The amplitude of the clock signal typically ranges from 1.0V to Vcc.
The high frequency oscillator that determines inductor charging frequency is controlled above by a digital
AC signal into the CHF pin. The HF clock signal frequency may range from 20KHz - 35KHz, with 15-20%
positive duty cycle for optimum lamp intensity. The amplitude of the clock signal typically ranges 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
3.3 V
800 Hz
15% + duty
1.0V Min
0.2V Max
1.0V Min
0.2V Max
27 KHz
15% + duty
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: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: 長度:100 ft 內(nèi)徑:1.5 in 收縮率:2:1 |
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