參數(shù)資料
型號(hào)： LM2793LDX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)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(shù)： 1/10頁
文件大?。?/td> 211K
代理商： LM2793LDX
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
相關(guān)PDF資料
PDF描述
LM2793LD Low Noise White LED Constant Current Supply with Dual Function Brightness Control
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
LM2794BL 功能描述:IC LED DRVR WHT BCKLT 14USMD RoHS:否 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動(dòng)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
LM2794BL NOPB 制造商:Texas Instruments 功能描述:LED DRVR 4Segment 3.3V/5V 14-Pin uSMD T/R
LM2794BLX 制造商:Texas Instruments 功能描述:
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