High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN

General Description The MAX8847Y/MAX8847Z negative charge pumps drive up to 6 white LEDs with regulated constant current for display backlight applications. By utilizing an inverting charge pump and extremely low-dropout adaptive current regulators, these ICs achieve very high efficiency over the

文件：1.73002 Mbytes 頁數(shù)：13 Pages

MAXIM

美信

High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN

General Description The MAX8847Y/MAX8847Z negative charge pumps drive up to 6 white LEDs with regulated constant current for display backlight applications. By utilizing an inverting charge pump and extremely low-dropout adaptive current regulators, these ICs achieve very high efficiency over the

文件：1.73002 Mbytes 頁數(shù)：13 Pages

MAXIM

美信

高性能負(fù)壓電荷泵，可驅(qū)動6只白光LED，3mm x 3mm薄型QFN封裝

MAX8847Y/MAX8847Z負(fù)壓電荷泵能夠以經(jīng)過調(diào)節(jié)的恒定電流驅(qū)動6個白光LED，用于顯示屏背光。器件采用反相電荷泵和超低壓差自適應(yīng)電流調(diào)節(jié)器，能夠在單節(jié)Li+電池的整個供電電壓范圍內(nèi)，甚至當(dāng)LED正向?qū)妷捍嬖谳^大的不匹配時，仍可保持極高效率。1MHz固定開關(guān)頻率允許使用纖小的外部元件。器件的穩(wěn)壓架構(gòu)經(jīng)過優(yōu)化，可確保低EMI和低輸入紋波。MAX8847Y/MAX8847Z包含熱關(guān)斷、開路和短路保護。\n MAX8847Y/MAX8847Z支持獨立的LED開啟/關(guān)閉以及調(diào)光控制。MAX8847Z為LED1至LED6提供PWM調(diào)光控制；MAX8847Y為LED1至LED4提供PWM調(diào)光控 \n? 負(fù)壓1倍壓/1.5倍壓電荷泵 \n? 自適應(yīng)電流調(diào)節(jié)器 \n? 每路LED采用獨立的電源供電 \n? 24mA至0.1mA脈沖串調(diào)光(MAX8847Y) \n? 24mA至0mA PWM調(diào)光(MAX8847Z) \n? 2% (最大值) LED電流精度，1% (典型值)匹配度 \n? 120μA低靜態(tài)電流 \n? 0.4μA低關(guān)斷電流 \n? 浪涌電流限制 \n? 溫度降額功能 \n? 16引腳、3mm x 3mm薄型QFN封裝;

ADI

亞德諾

6A, 2.7V-6V, High-Efficiency, Synchronous, Step-Down Switcher with I2C Interface In 2x3mm QFN

文件：506.42 Kbytes 頁數(shù)：22 Pages

MPS

美國芯源

6A High Efficient Synchronous Step-Down Switcher with I?C Interface

文件：1.14536 Mbytes 頁數(shù)：7 Pages

MPS

美國芯源

6A, 2.7V-6V, High-Efficiency, Synchronous, Step-Down Switcher with I2C Interface In 2x3mm QFN

文件：506.42 Kbytes 頁數(shù)：22 Pages

MPS

美國芯源