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參數資料
| 型號： | LM2793LD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Low Noise White LED Constant Current Supply with Dual Function Brightness Control |
| 中文描述： | SWITCHED CAPACITOR REGULATOR, 675 kHz SWITCHING FREQ-MAX, DSO10 |
| 封裝： | LLP-10 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 211K |
| 代理商： | LM2793LD |
LM2793
Low Noise White LED Constant Current Supply with
Dual Function Brightness Control
General Description
The LM2793 is a highly efficient, semi-regulated 1.5x CMOS
charge pump that provides dual constant current outputs.
The LM2793 has an input voltage range of 2.7V to 5.5V.
To control LED brightness, the amount of current driven to
the current-mode outputs can be adjusted with an analog
voltage and/or a pulse-width-modulated (PWM) square
wave.
Pre-regulation of the charge pump minimizes conducted
noise on the input. Combined with a fixed switching fre-
quency of 500kHz, the LM2793 is a low-noise solution.
The LM2793 is available in a 10-pin Leadless Lead-frame
package: LLP-10.
Features
n
Two Regulated Current Outputs, up to 16mA Each,
Matched to Within
±
0.3% (typ.)
n
High Efficiency, 1.5x Regulated Charge Pump
n
Input Voltage Range: 2.7V to 5.5V
n
Soft Start Limits Inrush Current
n
Analog Voltage Brightness Control
n
PWM Brightness Control
n
Very Small Solution Size - NO INDUCTOR
n
500kHz Switching Frequency
n
3μA (typ.) Shutdown Current
n
LLP-10 Package: 3.0mm X 3.0mm X 0.8mm
Applications
n
White LED Display Backlights
n
White LED Keypad Backlights
n
1-Cell LiIon Battery-Operated Equipment Including
PDAs, Hand-held PCs, Cellular Phones
n
Flat Panel Displays
Typical Application Circuit
20063602
February 2003
L
2003 National Semiconductor Corporation
DS200636
www.national.com
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| LM2793 | Low Noise White LED Constant Current Supply with Dual Function Brightness Control |
| LM2794TLX | Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control |
| LM2794BL | Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control |
| LM2794BLX | Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control |
| LM2794TL | Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2793LD/NOPB | 功能描述:IC LED DRIVR WHITE BCKLGT 10-LLP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝: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:1 內部驅動器: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 供應商設備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LM2793LDEV | 功能描述:電源管理IC開發工具 LM2793L EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2793LDX | 功能描述:IC LED DRIVR WHITE BCKLGT 10-LLP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝: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:1 內部驅動器: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 供應商設備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LM2793LDX/AULF | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM2794 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control |
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