- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377971 > ML4836 (Fairchild Semiconductor Corporation) Compact Fluorescent Electronic Dimming Ballast Controller(小型熒光管整流器控制器) PDF資料下載
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)： | 8/15頁 |
| 文件大?。?/td> | 150K |
| 代理商： | ML4836 |
ML4836
8
REV. 1.0 10/12/2000
FUNCTIONAL DESCRIPTION
(Continued)
INTERRUPT
R
X
/C
X
7
8
3.8/1.2V
+
–
1.20/1.0V
0.625
R
SET
V
CC
R
T2
REF
1
LEA_ENB
C
T
6
R
T2
R
T
–
+
5
+
R
T
/C
T
7.5mA
I
CHG
DURING PREHEAT
AFTER PREHEAT
LEA_ENB = HI
LEA_ENB = LOW
I
RSET
CHG=
2.5V
I
RSET
CHG=
5V
8K±25%
–
7.5V
I
RSET
CHG=
5V
8K±25%
–
LEAO
NOTE 1: R
SET
SHOULD BE SELECTED SUCH THAT AFTER PREHEAT WITH LEA_ENB "HI",
I
CHG
MUST BE < 0.
I
CHG
IS A UNI-DIRECTIONAL SOURCE CURRENT ONLY.
14
4.65/1.75V
–
+
7.5V
CLOCK
C
T
V
TH
= 3.8V
V
TL
= 1.2V
t
DIS
t
CHG
EOL and the ML4836
The ML4836 uses a circuit that creates a DC voltage
representative of the power supplied to the lamps through
the inverter when use in conjuction with PFC. This voltage
is used by the ML4836 to latch off the ballast when it
exceeds an internal threshold. An external resistor can be
used as the “EOL latch resistor” to set the power level trip
point, as shown in by R9 in Figure 6.
BALLAST OUTPUT SECTION
The IC controls output power to the lamps via frequency
modulation with non-overlapping conduction. This means
that both ballast output drivers will be low during the
discharging time t
DIS
of the oscillator capacitor C
T
.
OSCILLATOR
The VCO frequency ranges are controlled by the output
of the LFB amplifier (R
SET
). As lamp current decreases,
LFB OUT falls in voltage, causing the C
T
charging current
to increase, thereby causing the oscillator frequency to
increase. Since the ballast output network attenuates high
frequencies, the power to the lamp will be decreased. The
oscillator frequency is determined by the following
equations:
Figure 7. Oscillator Block Diagram and Timing
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ML4841 | Variable Feedforward PFC/PWM Controller Combo(前饋可變PFC/PWM控制器組合芯片) |
| ML4851 | Low Current, Voltage Boost Regulator(小電流升壓穩(wěn)壓器) |
| ML4854IT | Adjustable, Low-Current, 2-Cell Boost Regulator with Shutdown and Low Battery Detect |
| ML4854 | Adjustable, Low-Current, 2-Cell Boost Regulator with Shutdown and Low Battery Detect |
| ML4861 | Low Voltage Drop Boost Regulator(低壓差升壓穩(wěn)壓器) |
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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。