駕駛4-1/2數(shù)字計(jì)數(shù)器顯示的MAX6958/59LED驅(qū)動(dòng)

Abstract: This application note provides details on how to connect the MAX6958 and MAX6959 LED display drivers to 5-digit LED displays for counter display applications requiring the display range -39999 to 39999 without decimal points. ...

2009-04-27 標(biāo)簽：驅(qū)動(dòng)器 1090

使用MAX6955LED顯示驅(qū)動(dòng)器與PIC單片機(jī)滾動(dòng)信息-U

Abstract: A circuit and program listing for using the MAX6955 LED display driver with a PIC microcontroller and 14-segment displays. The MAX6955 is an LED display driver with an I2C™-compatible, serial interface cap...

2009-04-27 標(biāo)簽：led驅(qū)動(dòng)器 1564

使用電腦進(jìn)行實(shí)驗(yàn)的MAX7219和MAX7221LED顯示驅(qū)

Abstract: This application note describes a PC program, downloadable for free, to assist in the evaluation of the MAX7219 and MAX7221 LED display drivers. The MAX7219 and MAX7221 are 8-digit, 7-segment, common-cathode, mu...

2009-04-27 標(biāo)簽：驅(qū)動(dòng)器MAX7219 2056

快速入門(mén)：使用MAX6954驅(qū)動(dòng)7段LED顯示器

摘要：本文旨在幫助工程師快速掌握MAX6954驅(qū)動(dòng)7段單色LED驅(qū)動(dòng)器的使用方法。 MAX6954是一個(gè)通用顯示驅(qū)動(dòng)器，能夠通過(guò)一個(gè)串口控制多個(gè)分立、7段、14段或16段LED顯示器...

2009-04-27 標(biāo)簽：led顯示器 1207

快速入門(mén)：使用MAX6954驅(qū)動(dòng)14段LED顯示器

摘要：本文旨在幫助工程師快速掌握MAX6954驅(qū)動(dòng)14段單色LED顯示器的使用方法。 MAX6954是一個(gè)通用顯示驅(qū)動(dòng)器，能夠通過(guò)一個(gè)串口控制多個(gè)分立、7段、14段或16段LED顯...

2009-04-27 標(biāo)簽：led顯示器 1687

快速入門(mén)：使用MAX6954驅(qū)動(dòng)16段LED顯示器

摘要：本文旨在幫助工程師快速掌握MAX6954驅(qū)動(dòng)16段單色LED顯示器的使用方法。 MAX6954是一個(gè)通用顯示驅(qū)動(dòng)器，能夠通過(guò)一個(gè)串口控制多個(gè)分立、7段、14段或16段LED顯示器...

2009-04-27 標(biāo)簽：led顯示器 1031

輸出的脈寬調(diào)制集液晶/LED驅(qū)動(dòng)器

Abstract: The digital, pulse-width-modulation (PWM) output available from many microprocessors is based on an internal 8- or 16-bit counter and features a programmable duty cycle. It is suitable for adjusting the output of an LCD driver, a...

2009-04-27 標(biāo)簽：led驅(qū)動(dòng)器 716

高電壓的LED驅(qū)動(dòng)器提供軟件控制強(qiáng)度-High-Voltag

Abstract: This circuit adapts a bias-supply IC for avalanche photodiodes (APDs) to drive a high-voltage string of LEDs, thereby providing adjustable current, software shutdown, and logic indication of open-circuit faults. ...

2009-04-27 標(biāo)簽：led驅(qū)動(dòng)器 1033

擴(kuò)展MAX6959LED顯示驅(qū)動(dòng)器的鍵盤(pán)掃描，8鍵擴(kuò)展至12

摘要：通過(guò)映射多個(gè)按鍵，可以擴(kuò)展MAX6959 LED顯示驅(qū)動(dòng)器的鍵盤(pán)掃描范圍，從8鍵擴(kuò)展到12鍵。該應(yīng)用筆記介紹了一種擴(kuò)展掃描的方法。 MAX6959是4位、9段LED驅(qū)動(dòng)器，可自...

2009-04-27 標(biāo)簽：led驅(qū)動(dòng)器 856

將MAX6954和MAX6955的鍵盤(pán)掃描擴(kuò)展至32鍵以上

摘要：本應(yīng)用筆記介紹了一種擴(kuò)展掃描的方法，可以擴(kuò)展MAX6954和MAX6955 LED顯示驅(qū)動(dòng)器的鍵盤(pán)掃描范圍，從32鍵擴(kuò)展到80鍵。 MAX6954/MAX6955是4線(xiàn)或2線(xiàn)串行接口的LED驅(qū)動(dòng)器，...

2009-04-27 標(biāo)簽：MAX6954 1437

使用MAX6958/MAX6959LED驅(qū)動(dòng)器實(shí)現(xiàn)單個(gè)LED

摘要：該應(yīng)用筆記詳細(xì)說(shuō)明了如何使用MAX6958和MAX6959 LED顯示驅(qū)動(dòng)器實(shí)現(xiàn)象素級(jí)(單個(gè)LED)亮度控制。該技術(shù)增強(qiáng)了這些驅(qū)動(dòng)器內(nèi)置的64級(jí)整體(一次調(diào)整所有LED)亮度控制功能。 ...

2009-04-27 標(biāo)簽：led驅(qū)動(dòng)器 1427

設(shè)計(jì)非隔離型反激LED驅(qū)動(dòng)器

摘要：本應(yīng)用筆記提供了一個(gè)驅(qū)動(dòng)高亮度LED的簡(jiǎn)單電路，只需很少的外圍元件，并提供了線(xiàn)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(biāo)簽：led驅(qū)動(dòng)器 997

為高亮度LED提供高效電流驅(qū)動(dòng)

摘要：本文討論的簡(jiǎn)單電路能夠調(diào)節(jié)高亮度LED的驅(qū)動(dòng)電流，該電路采用非定制、高度集成的降壓型開(kāi)關(guān)調(diào)節(jié)器(MAX5035)，能夠準(zhǔn)確地控制流過(guò)LED的電流。MAX5035 DC/DC轉(zhuǎn)換器在7.5V至76V寬輸...

2009-04-27 標(biāo)簽：led 887

利用MAXQ2000和MAX6960構(gòu)建股價(jià)顯示系統(tǒng)

摘要：本應(yīng)用筆記介紹了一套基于MAX6960顯示驅(qū)動(dòng)器和MAXQ2000微控制器(MAXQ20內(nèi)核)的股價(jià)顯示系統(tǒng)，并提供了構(gòu)建該系統(tǒng)的所有必備信息。其中包括電路原理圖、Windows軟件和微控制器...

2009-04-27 標(biāo)簽：MAXQ2000 1426

MAX6951/MAX6950LED顯示驅(qū)動(dòng)器與MAXQ20

摘要：本應(yīng)用筆記說(shuō)明MAX6951/MAX6950 LED驅(qū)動(dòng)器和MAXQ2000的SPI外設(shè)通信的匯編程序設(shè)計(jì)。 引言MAX6950和MAX6951分別為5位和8位共陰極LED顯示驅(qū)動(dòng)器，通過(guò)高速SPI 接口控...

2009-04-26 標(biāo)簽：led 832

High-Power White-LED Driver Op

Abstract: A white-LED driver based on a DC-DC step-up converter operates on one or two alkaline cells, and starts with voltages as low as 0.8V. Replacing incandescent bulbs with high-power white LEDs yields higher reliabi...

2009-04-26 標(biāo)簽：led 1127

低功耗的PWM輸出控制LED亮度-Low-Power PWM

Abstract: A common brightness-control circuit for LEDs uses an electrically controlled potentiometer (EPOT) to achieve digital control of the LED brightness. Replacing the EPOT with an RC network, however, reduces both the IC count and the...

2009-04-26 標(biāo)簽：led 2080

具備高溫保護(hù)功能的白光LED驅(qū)動(dòng)器

摘要：電路驅(qū)動(dòng)一只大功率白光LED (WLED)，當(dāng)溫度過(guò)高以及熱敏電阻發(fā)生開(kāi)路或短路故障時(shí)，將關(guān)閉LED。 具備高溫保護(hù)功能的白光LED驅(qū)動(dòng)器 摘要：電路驅(qū)動(dòng)一只大功率...

2009-04-26 標(biāo)簽：led 751

用LED替代低效率的MR16鹵素?zé)?/a>

2009-04-26 標(biāo)簽：led 1598

使用MAX15005用于LED應(yīng)用系統(tǒng)的供電和驅(qū)動(dòng)

摘要：本參考設(shè)計(jì)是汽車(chē)LED應(yīng)用的完整系統(tǒng)設(shè)計(jì)。采用MAX15005電流模式控制器，將標(biāo)準(zhǔn)鉛酸汽車(chē)電池的電壓升至21V，用于驅(qū)動(dòng)一串汽車(chē)LED。 下列提供了汽車(chē)LED系統(tǒng)的參...

2009-04-26 標(biāo)簽：led 822

利用MAXQ2000微控制器的LED驅(qū)動(dòng)器MAX6970顯示

Abstract: This note shows an application circuit and provides all the firmware required to interface the MAXQ2000 microcontroller evaluation (EV) kit to the MAX6970, an 8-port, 36V constant-current LED driver. Included in this application ...

2009-04-26 標(biāo)簽：led驅(qū)動(dòng)器 926

設(shè)計(jì)一個(gè)基于LED視頻顯示板-Designing an LE

Abstract: Currently, all of the top LED video-display board manufacturers have similar but proprietary architectures using LED video bricks of different color pixel sizes. Maxim has taken its knowledge of these applications and incorporate...

2009-04-26 標(biāo)簽：led 1206

Buffering Scheme Drives Large

Abstract: This application notes shows how to buffer the triplex backplane drive outputs of a LCD driver such as MAX7231 family to increase the capacitive drive capability. This enables a large LCD to be driven without ghosting and other a...

2009-04-26 標(biāo)簽：lcd 1051

LCD Contrast Control Using Dal

Abstract: Manufacturers of portable equipment, workstations, small handheld computers, cell phones, and video games use flat panel displays to display text and images. Electro-mechanical potentiometers have been the typical mechanism used ...

2009-04-26 標(biāo)簽：lcd 2492

調(diào)節(jié)液晶偏壓發(fā)生器無(wú)需電感器-Regulated LCD-B

A stringent height limitation on the PC boards for personal digital assistants (PDAs) and palmtop computers compels the use of expensive, low-profile inductors in switch-mode power supplies. As an alternative, however, certain switch-mode ...

2009-04-26 標(biāo)簽：電感器 960

使用DS1050可編程PWMs控制直流電動(dòng)機(jī)和LED背光液晶

Abstract: The DS1050 is a 5-bit pulse-width modulator (PWM) controlled by a 2-wire bus. This allows a single master device to control up to 8 slave (DS1050 and other 2-wire devices) on a single 2-wire bus. In this application note, an inte...

2009-04-26 標(biāo)簽：DS1050 1512

PWM Sets Output of LCD/LED Dri

Abstract: The digital, pulse-width-modulation (PWM) output available from many microprocessors is based on an internal 8- or 16-bit counter and features a programmable duty cycle. It is suitable for adjusting the output of an LCD driver, a...

2009-04-26 標(biāo)簽：ledlcd 1065

CCFL特性

摘要：冷陰極熒光燈(CCFL)用作白光源為液晶顯示器(LCD)提供背光。CCFL可提供許多很好的特性，但也要考慮它們獨(dú)特特征，以便使其可用性最大化。這篇應(yīng)用筆記描述了一些CCFL的獨(dú)特...

2009-04-26 標(biāo)簽：CCFL 1591

Serializing an HD44780 LCD Dis

Abstract: Besides reducing the number of required GPIO lines from eleven to two, this circuit also provides programmable contrast and backlight control. Most LCD character displays connect to the outside world through a c...

2009-04-26 標(biāo)簽：HD44780 1517

The DS3514 programmable gamma

The DS3514...

2009-04-26 標(biāo)簽：寄存器 1078