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參數資料
| 型號： | LM2753 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | LED驅動器 |
| 英文描述： | High Power Switched Capacitor Voltage Convertor/Flash LED Driver |
| 中文描述： | 高功率開關電容電壓轉爐/閃光燈LED驅動器 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 520K |
| 代理商： | LM2753 |
LM2753
High Power Switched Capacitor Voltage Convertor/Flash
LED Driver
General Description
The LM2753 is capable of driving a Flash LED with a pulsed
current of 400mA at an input voltage of 3.6V. A switched
capacitor doubler, the LM2753 provides a regulated 5V out-
put (V
OUT
) over an input supply range of 3.0V to 5.5V. The
switched output, I
, takes less than 10ns to turn on and
provide maximum current to a Flash LED. Flash LED current
is set via a ballast resistor. Continuous illumination current
(Torch Mode) is programmed by connecting a resistor be-
tween I
and V
. This device uses only three small,
low-cost ceramic capacitors.
LM2753 uses Pulse Frequency Modulation (PFM) regula-
tion. Typical operating frequency is 725kHz. Under no-load
conditions, LM2753 operates on only 60μA. If the output is
connected to ground, the charge pump stays in the gain of 1
which helps limit the input current to 300mA (typ.)
LM2753 is available in a 10-pin No Pullback Leadless Lead-
frame Package: LLP-10.
Features
n
Input Voltage Range: 3.0V to 5.5V
n
Regulated 5V Output
n
250mA Output Current with a 3.6V input
n
400mA Pulsed Output Current (up to 500ms duration)
n
60μA (typ.) Quiescent Current
n
PFM Regulation
n
Inductor-less solution: requires only 3 small capacitors
n
<
1μA Typical Shutdown Current
n
10-pin LLP Package (No Pullback):
3mm x 3mm x 0.75mm
Applications
n
Cell Phone Camera Flash
n
General Purpose Regulated Voltage Output, High
Current Supply
Typical Application Circuit
20140601
February 2005
L
2005 National Semiconductor Corporation
DS201406
www.national.com
相關PDF資料 |
PDF描述 |
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| LM2753SDX | High Power Switched Capacitor Voltage Convertor/Flash LED Driver |
| LM2765 | Switched Capacitor Voltage Converter |
| LM2765M6 | Switched Capacitor Voltage Converter |
| LM2765M6X | Switched Capacitor Voltage Converter |
| LM2781 | Ultra-Low Ripple Switched Capacitor Voltage Inverter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2753SD | 功能描述:LED照明驅動器 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 |
| LM2753SD | 制造商:Texas Instruments 功能描述:VOLT CONV FLASH DRIVER POWERWISE |
| LM2753SD/NOPB | 功能描述:LED照明驅動器 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 |
| LM2753SDX | 功能描述:LED照明驅動器 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 |
| LM2753SDX/NOPB | 功能描述:LED照明驅動器 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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