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參數(shù)資料
| 型號： | FAN5607 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | LED驅動器 |
| 英文描述： | LED Driver with Adaptive Charge Pump DC/DC Converter |
| 中文描述： | LED驅動器自適應電荷泵DC / DC轉換器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 546K |
| 代理商： | FAN5607 |
www.fairchildsemi.com
REV. 1.0.0 6/22/04
Features
Parallel LED Driver Supports all Forward Voltages
Adaptive V
OUT
Adjustment to the Highest Diode Voltage
Internally Matched LED Current Sources
Built-in Charge Pump has Three Modes of Operation:
– 1X, 1.5X, and 2X Mode
Up to 93% Efficiency
Low EMI, Low Ripple
Up to 120mA Output Current (
External Resistor to Set Maximum (100%) LED Current
Enable Input Can be Duty-Cycle-Modulated to Control
LED Current Level Between 0 and 100%
2.4V to 5.5V Input Voltage Range
I
CC
< 1μA in Shutdown Mode
1MHz Operating Frequency
Shutdown Isolates Output from Input
Soft-Start Limits Inrush Current
Short Circuit Protection
Minimal External Components Needed
Available in a 4x4mm 16-lead MLP Package
)
Applications
Cell Phones
Handheld Computers
PDA, DSC, MP3 Players
Keyboard Backlight
LED Displays
Description
The FAN5607 generates regulated output current from a bat-
tery with input voltage varying between 2.7V to 5.5V.
Switch reconfiguration and fractional switching techniques
are utilized to achieve high efficiency over the entire input
voltage range. A proprietary internal circuitry continuously
monitors each LED current loop and automatically adjusts
the generated output DC voltage to the lowest minimum
value required by the LED having the highest forward volt-
age. This adaptive nature of the FAN5607 eliminates the
need for LED pre-selection (matching) and ensures opera-
tion at high efficiency. When the input voltage is sufficiently
high to sustain the programmed current level in the LEDs,
the FAN5607 re-configures itself to operate as a linear regu-
lator, and the DC-DC converter is turned off. Only two 0.1μF
to 1μF bucket capacitors and two 4.7μF input/output capaci-
tors are needed for proper operation. LED current can be
programmed using an external resistor. The resistor sets the
maximum LED current and a PWM signal applied to the
enable pin can modulate that current level between 0mA
(off) and the maximum level.
Soft-start circuitry prevents excessive current draw during
power on. The device has built-in short circuit protection.
The device is available in 4x4mm 16-lead MLP package.
4
30
mA
×
FAN5607
LED Driver with Adaptive Charge Pump DC/DC
Converter
Typical Application
CAP1
CAP2
C
OUT
C
IN
LED-
LED-
LED-
LED-
EN
V
OUT
V
OUT
V
IN
V
IN
R
SET
R
SET
GND
FAN5607
CAP+
CAP+
CAP-
CAP-
相關PDF資料 |
PDF描述 |
|---|---|
| FAN5607HMPX | LED Driver with Adaptive Charge Pump DC/DC Converter |
| FAN5608DMPX | Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5608MPX | Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5608 | Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5608DHMPX | Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5607_AEA3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5607HMPX | 功能描述:LED照明驅動器 LED Driver w/ Adap Charge Pump DC/DC 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 |
| FAN5608 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Serial / Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5608_06 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Serial / Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5608DHMPX | 功能描述:LED照明驅動器 LED Driver Serial/Parallel 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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