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串聯(lián)或并聯(lián)白光LED的供電方案：電荷泵與升壓型DC-DC轉(zhuǎn)換

摘要：白光LED被普遍用作便攜設(shè)備LCD的背光源，原因是他們復(fù)雜程度較低、花費較少且尺寸小于CCFL背光源。PDA、手機和數(shù)碼相機等便攜設(shè)備已逐步過渡到彩色LCD顯示屏，因此，越來...

2009-04-27 標簽：led 2587

結(jié)構(gòu)緊湊，無電感升壓電路調(diào)節(jié)白光LED偏置電流-Compac

Abstract: This article shows how to use the MAX1759 buck/boost charge pump to power white LEDs for display backlighting in portable applications. The increasing use of color LCDs in hand-held equipment is creating a need ...

2009-04-27 標簽：led 1435

混合電路驅(qū)動器的類型和數(shù)量的LED-Circuit Driv

Portable systems often use LEDs of different colors-white for the display backlight, green for keypad illumination, red for power, etc., and in varying quantities of each. Typically the LEDs are driven by at least two power supplies, one f...

2009-04-27 標簽：led 驅(qū)動器 944

單管控制第二LED陣列在開關(guān)模式LED背燈-Single F

White-LED backlights are gaining acceptance because they offer higher reliability and simpler drive circuitry than those based on CCFL and EL technology. As a result, the white-LED backlight is increasingly common in PDAs, cell-phones, dig...

2009-04-27 標簽：led 1045

利用LDO改善白光LED的匹配度

摘要：白光發(fā)光二極管(LED)在各種照明設(shè)備中的應(yīng)用正在穩(wěn)步增長，如手持產(chǎn)品中的閃光燈、顯示器背光等。與白熾燈相比，它們提供真正的白光、消耗更低的功耗。與熒光燈相比，...

2009-04-27 標簽：led 725

白色LED的恒流驅(qū)動

摘要：用白色LED為顯示器或其他照明設(shè)備做背光源時，需要對其進行恒流驅(qū)動，主要原因是：避免驅(qū)動電流超出最大額定值，影響其可靠性。獲得預(yù)期的亮度要求，并...

2009-04-27 標簽：led 925

白光LED驅(qū)動器提供64級對數(shù)調(diào)光-White-LED Dr

Abstract: This circuit drives as many as four white LEDs in parallel from a 3.3V source, and adjusts the total LED current from 1mA to 106mA, in 64 steps of 1dB each. The circuit of Figure 1 is designed for portable-power...

2009-04-27 標簽：led 1113

設(shè)計非隔離型反激LED驅(qū)動器

摘要：本應(yīng)用筆記提供了一個驅(qū)動高亮度LED的簡單電路，只需很少的外圍元件，并提供了線性和PWM亮度調(diào)節(jié)的功能。非常適合Osram、Lumiled、Cree和Nichia LED。概述...

2009-04-27 標簽：led 驅(qū)動器 621

高亮度LED恒流驅(qū)動電路設(shè)計

高亮度LED恒流驅(qū)動電路設(shè)計摘要：本文討論的簡單電路能夠調(diào)節(jié)高亮度LED的驅(qū)動電流，該電路采用非定制、高度集成的降壓型開關(guān)調(diào)節(jié)器(MAX5035)，...

2009-04-27 標簽：led 3580

具備高溫保護功能的白光LED驅(qū)動器

摘要：電路驅(qū)動一只大功率白光LED (WLED)，當溫度過高以及熱敏電阻發(fā)生開路或短路故障時，將關(guān)閉LED。具備高溫保護功能的白光LED驅(qū)動器摘要：電路驅(qū)動一只大功率...

2009-04-27 標簽：led 826

MAX6956編程指南

摘要：本指南給出了MAX6956 LED顯示驅(qū)動器以及I/O擴展器編程的詳細信息。同時還討論了類似器件(MAX6957、MAX7300以及MAX7301)的一些編程技巧。概述MAX6956 LED驅(qū)動器...

2009-04-27 標簽：MAX6956 1037

負電荷泵為WLED背光應(yīng)用提供堪比電感電路的高效率

負電荷泵為WLED背...

2009-04-27 標簽：led 695

VFD Grid/Anode Supply Using MA

VFD Grid/A...

2009-04-27 標簽：VFD 1216

VFD管制造商網(wǎng)站

VFD管制造商網(wǎng)站...

2009-04-27 標簽：VFD 1094

Using Maxim SPI-compatible Dis

Using Maxi...

2009-04-27 標簽：SPI driver 1623

建設(shè)點陣圖形小組與MAX6952和MAX6953 5x7LE

Abstract: This application note discusses hardware design techniques to build monocolour and bicolour graphic message boards using the MAX6952 and MAX6953 SPI™ and I²C 5x7 matrix LED display drivers. This appli...

2009-04-27 標簽：MAX6952 1434

從PC中試驗MAX6950和MAX6951 LED顯示驅(qū)動器

Abstract: This application note describes a PC program, downloadable free, to assist design, evaluation, font design with MAX6950 and MAX6951 7-segment LED display drivers. The MAX6950 and MAX6951 are five-digit and eight...

2009-04-27 標簽：led 驅(qū)動器 1250

數(shù)據(jù)復(fù)用器添加光標移動到MAX7219或MAX7221的LE

Abstract: The MAX7219 or MAX7221 7-segment LED display driver can highlight any one digit of its 8 digit display by adding a data multiplexer. This circuit intensifies the brightness of the selected digit to provide a cursor function for d...

2009-04-27 標簽：MAX7219 1551

在靜態(tài)MAX6956和MAX6957 LED驅(qū)動器中加入全球

Abstract: This application note discusses techniques to change the intensity of all the LED segments of a display at once (global intensity control) driven by the MAX6956 or MAX6957 static LED drivers. This control is additional to the seg...

2009-04-27 標簽：led 驅(qū)動器 879

Experimenting with the MAX6956

Abstract: This application note describes a PC program, downloadable free, to assist evaluation of the MAX6956 and MAX6957 LED display drivers and GPIO (port expanders). The MAX6956 and MAX6957 are versatile 28-segment LE...

2009-04-27 標簽：led 1019

選擇數(shù)字和字母顯示配置的MAX6954和MAX6955的SP

Abstract: This application note uses a web based Java program to allow an engineer to simulate the wide range of display configurations of the MAX6954 and MAX6955 serial interfaced LED display drivers. The tool enables the user to check wh...

2009-04-27 標簽：led 1190

添加小組發(fā)光強度控制MAX6952和MAX6953 5x7矩

Abstract: This application note discusses techniques to change the intensity of all the LED digits of a display at once (panel intensity control) driven by the MAX6952 or MAX6953 5x7 LED matrix drivers. This control is additional to the di...

2009-04-27 標簽：MAX6952 953

加入全球發(fā)光強度控制的MAX6954和MAX6955LED驅(qū)

Abstract: This application note discusses techniques to change the intensity of all the LED digits of a display at once (global intensity control) driven by the MAX6954 or MAX6955 multiplexed LED drivers. This control is additional to the ...

2009-04-27 標簽：MAX6954 1336

使用MAX6950和MAX6951LED顯示驅(qū)動器的多重雙數(shù)

Abstract: This application note discusses how to connect the MAX6950 (5 digit) and MAX6951 (8 digit) 7-segment LED display drivers to multiplex dual digit LED displays instead of regular single digit 7 segment displays. T...

2009-04-27 標簽：led 驅(qū)動器 1267

Migrating from the MAX7219 and

Abstract: This application note discusses the similarities and differences, both hardware and software, between the older MAX7219 and MAX7221 LED display drivers and the newer MAX6950 and MAX6951 drivers. These drivers are five-digit or ei...

2009-04-27 標簽：led MAX7219 906

軟件控制的MAX6952和MAX6953LED驅(qū)動器的圖形應(yīng)

Abstract: This application note discusses software design techniques to build monocolour and bicolour graphic message boards using the MAX6952 and MAX6953 SPI and I2C 5 x 7 matrix LED display drivers. This application not...

2009-04-27 標簽：MAX6952 971

使用MAX7219/7221向更高電壓或電流-Using t

Abstract: Techniques to amplify the current and voltage drive capabilities of the MAX7219 and MAX7221 serial interface LED drivers. The MAX7219/7221 is an 8-digit, 7-segment common-cathode multiplexed LED display driver w...

2009-04-27 標簽：MAX7219 2265

Charlieplexing - Reduced Pin-C

Abstract: This application note discusses "Charlieplexing" -- a pin-count reducing multiplex technique used by the MAX6950, MAX6951, MAX6954, MAX6955, MAX6958, and MAX6959 LED display drivers. This application note discus...

2009-04-27 標簽：led 828

接線的MAX6958/59向4位時鐘顯示-Wiring th

Abstract: This application note provides details on how to connect the MAX6958 and MAX6959 LED display drivers to LED displays for clock applications. Standard 1, 2, 3, and 4 digit displays, off-the-shelf clock displays are discussed. A su...

2009-04-27 標簽：MAX6958 1131

駕駛4-1/2數(shù)字儀表顯示與MAX6958/59LED驅(qū)動器

Abstract: This application note provides details on how to connect the MAX6958 and MAX6959 LED display drivers to 5-digit LED displays for panel meter applications requiring the display range -19999 to 19999 with decimal points. ...