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參數(shù)資料
| 型號(hào)： | FAN5331 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 1.6MHz Boost Converter with 20V Integrated FET Switch |
| 中文描述： | 以1.6MHz升壓轉(zhuǎn)換器20V的集成FET開(kāi)關(guān) |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大小： | 214K |
| 代理商： | FAN5331 |
8
www.fairchildsemi.com
FAN5331 Rev. 1.0.1
F
The feedback loop tightly regulates the current in the branch
connected to FB pin, while the current in the other branch
depends on the sum of the LED’s forward voltages, V
OUT
and
the ballast resistor. The input and the output ripple is less than
3mV
RMS
, for load currents up to 40mA.
A Zener diode (V
Z
= 22V) connected between V
OUT
and GND
can prevent the FAN5331 from being damaged by over-voltage,
if the load is accidently disconnected during operation.
2. Dual Boost Converter
A negative voltage can be provided by adding an external
charge pump (C1, C2, D2, and D3).
Figure 7. Dual (±) Boost Converter
While the feedback loop tightly regulates V
OUT
, the negative out-
put voltage (-V
OUT
) can supply a light load with a negative volt-
age. Nevertheless, the negative voltage depends on the
changes of the load current in both -V
OUT
and +V
OUT
, as shown
in the graph below.
SHDN
V
IN
V
OUT
-V
OUT
R1
R2
GND
V
IN
FB
SW
F
A
C
F
120pF
C
IN
4.7
μ
F
10
μ
H
1
3
2
4
5
C
OUT
4.7
μ
F
L
BAT54
BAT54S
2.7V to 5.5V
ON
OFF
C2
C1
D1
D3
D2
4.7
μ
F
0.1
μ
F
I
OUT
= 10mA
I
OUT
= 50mA
0
10
20
30
40
50
-18
-16
-14
-12
-10
Negative Output Voltage vs Load Current
Load Current On Positive Output Side (mA)
N
-15V/Unloaded
-15V/10mA Load
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5331_05 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:High Efficiency Serial LED Driver and OLED Supply with 20V Integrated Switch |
| FAN5331_ACC3086B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5331SX | 功能描述:LED照明驅(qū)動(dòng)器 Adj 1.6MHz Boost Reg w/ 25V FET Switch RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| FAN5331SX_Q | 功能描述:IC LED DRVR WHITE BCKLGT SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動(dòng)器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁(yè)面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| FAN5332_BBC3086B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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