- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361025 > LM2796 (National Semiconductor Corporation) Dual-Display White LED Driver with 3/2x Switched Capacitor Boost PDF資料下載
參數(shù)資料
| 型號： | LM2796 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| 中文描述： | 雙顯示器白光LED驅(qū)動3/2x開關(guān)電容升壓 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 172K |
| 代理商： | LM2796 |
LM2796
Dual-Display White LED Driver with 3/2x Switched
Capacitor Boost
General Description
The LM2796 is a charge-pump based white-LED driver that
is ideal for mobile phone display backlighting. It can drive up
to 7 LEDs in parallel with up to 20mA through each LED.
Regulated internal current sources deliver excellent current
and brightness matching in all LEDs. The LED-driver current
sources are split into two independently controlled groups.
The primary group (4 LEDs) can be used to backlight the
main phone display. The second group (3 LEDs) can be
used to backlight a secondary display or to provide other
lighting features (keypad LEDs, for example). Brightness of
the two groups can be adjusted independently with pulse-
width modulated (PWM) digital signals.
The LM2796 works off an extended Li-Ion input voltage
range (2.7V to 5.5V). Voltage boost is achieved with a high-
efficiency 3/2x-gain charge pump.
The LM2796 is available in National’s chip-scale 18-bump
micro SMD package.
Features
n
Drives up to 7 LEDs with up to 20mA each
n
LEDs controlled in 2 Distinct Groups, for Backlighting 2
Displays (main LCD and sub-LCD)
n
Excellent Current and Brightness Matching
n
High-Efficiency 3/2x Charge Pump
n
Extended Li-Ion Input: 2.7V to 5.5V
n
PWM Brightness Control: 100Hz - 1kHz
n
18-bump Thin Micro SMD Package:
(2.1mm x 2.4mm x 0.6mm)
Applications
n
Mobile Phone Display Lighting
n
Mobile Phone Keypad Lighting
n
PDAs
n
General LED Lighting
Typical Application Circuit
20093801
February 2004
L
2004 National Semiconductor Corporation
DS200938
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2925 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2925T | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2926T | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2826 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2927 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM27961 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| LM27961AW WAF | 制造商:Texas Instruments 功能描述: |
| LM27961TL | 制造商:Texas Instruments 功能描述:IC WLED DRIVER POWERWISE |
| LM27961TL/NOPB | 功能描述:IC LED DRVR WHT BCKLT 18USMD RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 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 |
| LM27961TLEV | 功能描述:LED 照明開發(fā)工具 LM27961 EVAL BOARD RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。