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參數(shù)資料
| 型號： | FAN5609 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | LED Driver with Adaptive Charge Pump DC/DC Converter |
| 中文描述： | LED驅(qū)動器自適應電荷泵DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 112K |
| 代理商： | FAN5609 |
PRODUCT SPECIFICATION
FAN5609
REV. 1.0.2 5/30/03
5
Shutdown and Short Circuit Current Limit
Set both DAC inputs low to shut down the device. Built-in
short circuit protection limits the supply current to a maxi-
mum of 50mA.
Digital Control
A digital-to-analog converter (DAC) allows selection of the
following modes: OFF, 7mA, 14mA, 20mA, per diode.
By turning the IN B pin ON and OFF, the current can be
modulated between 7 to 20mA to achieve any I
(PWM). In PWM mode, the modulating frequency has to be
set sufficiently high in order to avoid a flickering effect
(100Hz to 1kHz).
Average
value
Digital Control with PWM
Any input can be modulated by a pulse train of variable duty
cycle (
δ
). By turning ON and OFF DAC inputs A or B, the
current can be continuously modulated to any average value
between 1 to 19mA. For a maximum range of LED current,
both A&B can be modulated at the same time.
A
B
0
0
1
0
0
1
1
1
I
LED
OFF
7mA
14mA
20mA
Switch Configuration
Figure 1
Step-up, 2:1 configuration.
Switch positions shown in charge phase.
Reverse all switches for pump phase.
CAP1
GND
V
OUT
V
IN
GND
CAP2
Figure 2
Step-up
3:2 configuration
Switch positions shown in charge phase.
Reverse all switches for pump phase.
C
OUT
V
OUT
=
2 X V
IN
+
-
+
-
V
IN
相關PDF資料 |
PDF描述 |
|---|---|
| FAN5609MPX | TERMINAL |
| FAN5609MTCX | CLIPS |
| FAN5610MPX | LED Driver for White, Blue or any Color LED |
| FAN5610 | LED Driver for White, Blue or any Color LED |
| FAN5611 | Low-Dropout LED Drivers for White, Blue or any Color LED |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5609_AFC3086B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5609_AGC3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5609MPX | 功能描述:LED照明驅(qū)動器 LED Driver DC/DC Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| FAN5609MPX_Q | 功能描述:LED照明驅(qū)動器 LED Driver DC/DC Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| FAN5609MTCX | 功能描述:LED照明驅(qū)動器 LED Driver DC/DC Converter 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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