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參數(shù)資料
| 型號： | L6585D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.6 A POWER FACTOR AND FLUORESCENT LIGHT CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | LEAD FREE, SOP-20 |
| 文件頁數(shù)： | 5/25頁 |
| 文件大小： | 1478K |
| 代理商： | L6585D |
L6585D
Application information
13/25
5.1.2
Ignition (time interval B Figure 5)
When the voltage at pin TCH drops down to 1.50V (typ.), the pin EOI is driven in high
impedance state and CIGN is exponentially charged according to the time constant τ given
by CIGN*RPRE that defines the ignition time and the frequency shift starts.
The ignition time is the time necessary to EOI voltage to reach 1.9V, so, by means of simple
calculation:
Equation 3
During this phase, the half-bridge current control can limit the maximum voltage applied
to the lamp by forcing small frequency increases whenever the half-bridge sense resistor
voltage exceeds the HBCSH threshold (see the “Half-Bridge current control” paragraph).
Figure 5, centre and right, shows the L6585D behavior as the lamp gets older; if it doesn’t
ignite for a time longer than the pre-heating one (counted by a cycle charge/discharge of the
TCH pin), the IC is stopped, enters low consumption and waits for either a re-lamp or an
UVLO.
T
IGN
3C
IGN
R
PRE
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6585D_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Combo IC for PFC and ballast control |
| L6585DE | 功能描述:功率因數(shù)校正 IC Combo IC for PFC Ballast control RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L6585DETR | 功能描述:功率因數(shù)校正 IC Combo IC for PFC and ballast control RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L6585DTR | 功能描述:DC/DC 開關(guān)控制器 Combo IC RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| L6590 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:FULLY INTEGRATED POWER SUPPLY FIPS |
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