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參數(shù)資料
| 型號(hào)： | LM27961TL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| 中文描述： | LED DISPLAY DRIVER, PBGA18 |
| 封裝： | 2.10 X 2.40 MM, 0.60 MM HEIGHT, TLA-18 |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大小： | 711K |
| 代理商： | LM27961TL |
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LM27961
Dual-Display White LED Driver with 3/2x Switched
Capacitor Boost
General Description
The LM27961 is a charge-pump-based white-LED driver that
is ideal for mobile phone display backlighting. It is intended
to drive 4 LEDs for a main phone display backlight and 3
LEDs for a sub-display backlight. Regulated internal current
sources deliver excellent current and brightness matching in
all LEDs.
The LED driver current sources are split into two indepen-
dently controlled groups. The primary group (Group A) can
be used to backlight a main phone display with up to 4 LEDs.
The low-side current drivers of Group A accommodate
common-anode-type LEDs. The second group (Group B)
can backlight a secondary display with up to 3 LEDs. The
high-side current drivers of Group B accommodate common-
cathode-type LEDs. Both Group A and Group B can also
drive standard two-terminal LEDs, and provide other general
lighting functions (keypad lighting, fun lighting, etc). The
brightness of the two LED groups can be adjusted indepen-
dently with external resistors.
The LM27961 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 LM27961 is available in National’s chip-scale 18-bump
micro SMD package.
Features
n
Drives 4 Individual Common-Anode LEDs with up to
20mA each for a Main Display Backlight
n
Drives 3 Individual Common-Cathode LEDs with up to
20mA each for a Sub-Display Backlight
n
Independent Resistor-Programmable Current Setting
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
20127901
November 2004
L
2004 National Semiconductor Corporation
DS201279
www.national.com
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PDF描述 |
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| LM27961TLX | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| LM2798 | WIRE |
| LM2798MM-1.5 | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter with Voltage Monitoring |
| LM2798MMX-1.8 | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter with Voltage Monitoring |
| LM2798MMX-1.5 | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter with Voltage Monitoring |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(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(yè)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: |
| LM27961TLX | 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 |
| LM27961TLX/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(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(yè)面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LM27964 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:White LED Driver System with I2C Compatible Brightness Control |
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