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參數(shù)資料
| 型號： | ML4836 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Compact Fluorescent Electronic Dimming Ballast Controller(小型熒光管整流器控制器) |
| 中文描述： | 緊湊型熒光燈電子調(diào)光鎮(zhèn)流器控制器（小型熒光管整流器控制器） |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 150K |
| 代理商： | ML4836 |
ML4836
REV. 1.0 10/12/2000
11
FUNCTIONAL DESCRIPTION
(Continued)
After cathode heating, the inverter frequency drops to
F
START
causing a high voltage to appear to ignite the lamp.
If lamp current is not detected when the lamp is supposed
to have ignited, the C
X
charging current is shut off and the
inverter is inhibited until C
X
is discharged by R
X
to the
1.25V threshold. Shutting off the inverter in this manner
prevents the inverter from generating excessive heat when
the lamp fails to strike or is out of socket. Typically this
time is set to be fairly long by choosing a large value of
R
X
.
LFB OUT is ignored by the oscillator until INTERRUPT is
above 1.20V The C
X
pin is clamped to about 7.5V.
Care should also be taken not to turn on the VCCZ clamp
so as not to dissipate excessive power in the IC. This will
cause the temp sensor to become active at a lower
ambient temperature.
A summary of the operating frequencies in the various
operating modes is shown below.
OPERATING MODE
OPERATING FREQUENCY
[F(MAX) to F(MIN)]
2
Preheat
After
Preheat
Dimming
Control
F(START)
F(MIN) to F(MAX)
Figure10. Lamp Starting and Restart Timing
6.75
7.5
4.75
1.25
.7
0
R
X
/C
X
HEAT
LEA_ENB OR
DIMMING LOCKOUT
INTERRUPT
INHIBIT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4836CP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Compact Fluorescent Electronic Dimming Ballast Controller |
| ML4836CS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Compact Fluorescent Electronic Dimming Ballast Controller |
| ML483-G | 功能描述:射頻混合器 .7-1.0GHz 5Volts RoHS:否 制造商:NXP Semiconductors 頻率范圍: 轉(zhuǎn)換損失——最大: 工作電源電壓:6 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ML483-PCB | 功能描述:射頻混合器 .7-1.0GHz 5Volts Eval Brd RoHS:否 制造商:NXP Semiconductors 頻率范圍: 轉(zhuǎn)換損失——最大: 工作電源電壓:6 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ML483PYA | 制造商:COILCRAFT 制造商全稱:Coilcraft lnc. 功能描述:High Reliability Power Inductors |
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