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參數(shù)資料
| 型號(hào)： | LM3502SQX-44 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Step-Up Converter for White LED Applications |
| 中文描述： | LED DISPLAY DRIVER, QCC16 |
| 封裝： | 1MM HEIGHT, LLP-16 |
| 文件頁(yè)數(shù)： | 1/18頁(yè) |
| 文件大?。?/td> | 928K |
| 代理商： | LM3502SQX-44 |
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LM3502
Step-Up Converter for White LED Applications
General Description
The LM3502 is a white LED driver for lighting applications.
For dual display or large single white LED string backlighting
applications, the LM3502 provides a complete solution. The
LM3502 contains two internal whitle LED current bypass
FET(Field Effect Transitor) switches that are ideal for con-
troling dual display applications. The while LED current can
be adjusted with a PWM signal directly from a microcontrol-
ler without the need of an RC filter network.
With no external compensation, cycle-by-cycle current limit,
over-voltage protection, and under-voltage protection, the
LM3502 offers superior performance over other application
specific standard product step-up white LED drivers.
Features
n
Drive up to 4, 6, 8 or 10 white LEDs for Dual Display
Backlighting
n
>
80% efficiency
n
Output Voltage Options: 16V , 25V , 35V, and 44V
n
Input Under-Voltage Protection
n
Internal Soft Start Eliminating Inrush Current
n
1 MHz Constant-Switching Frequency
n
Wide Input Voltage: 2.5V to 5.5V
n
Small External Components
n
Low Profile Packages:
<
1 mm Height
-10 Bump MicroSMD
-16 Pin LLP
Applications
n
Dual Display BackLighting in Portable Devices
n
Cellular Phones and PDAs
Typical Application
20131701
FIGURE 1. Blacklight Configuration with 10 White LEDs
September 2005
L
2005 National Semiconductor Corporation
DS201317
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM3502ITLX-35 | Step-Up Converter for White LED Applications |
| LM3502ITLX-44 | Step-Up Converter for White LED Applications |
| LM3502SQ-16 | Step-Up Converter for White LED Applications |
| LM3502SQ-25 | Step-Up Converter for White LED Applications |
| LM3502SQ-35 | Step-Up Converter for White LED Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3502SQX-44/NOPB | 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM3503 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503ITL-16 | 制造商:Texas Instruments 功能描述:IC WLED DRIVER 16V DUAL LLP-16 |
| LM3503ITL-16/NOPB | 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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