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參數(shù)資料
| 型號： | FAN5333B |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | High Efficiency, High Current Serial LED Driver with 30V Integrated Switch |
| 中文描述： | 高效率，高電流和30V的串行LED驅(qū)動器集成開關(guān) |
| 文件頁數(shù)： | 9/11頁 |
| 文件大小： | 538K |
| 代理商： | FAN5333B |
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www.fairchildsemi.com
FAN5333A/FAN5333B Rev. 1.0.1
F
3. Dimming Using Filtered PWM Signal
This method allows the use of a greater than 1kHz PWM fre-
quency signal with minimum impact on the battery ripple. The
filtered PWM signal Table 8 on page 9 acts as an adjustable DC
voltage as long as its frequency is significantly higher than the
corner frequency of the RC low pass filter.
Figure 8. Dimming Using Filtered PWM Signal
Thermal Shutdown
When the die temperature exceeds 150°C, a reset occurs and
will remain in effect until the die cools to 130°C, at that time the
circuit will be allowed to restart.
PCB Layout Recommendations
The inherently high peak currents and switching frequency of
power supplies require careful PCB layout design. Therefore,
use wide traces for high current paths and place the input
capacitor, the inductor, and the output capacitor as close as
possible to the integrated circuit terminals. The FB pin connec-
tion should be routed away from the inductor proximity to pre-
vent RF coupling. A PCB with at least one ground plane
connected to pin 2 of the IC is recommended. This ground plane
acts as an electromagnetic shield to reduce EMI and parasitic
coupling between components.
FB
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15K
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1.6K
FAN5333A
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FB
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FAN5333B
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5333BSX | 功能描述:LED照明驅(qū)動器 SYSTEM_POWER 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 |
| FAN5333BSX-CUT TAPE | 制造商:FAIRCHILD 功能描述:FAN5333B Series 5.5 V 1.5 MHz High Efficiency High Current Serial LED Driver |
| FAN5333SX | 功能描述:IC LED DRVR WHITE BCKLGT SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器: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)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| FAN5336 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:1.5MHz Boost Regulator with 33V Integrated FET Switch |
| FAN5336_07 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:1.5MHz Boost Regulator with 33V Integrated FET Switch |
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