800mA Fixed Frequency White LED Driver

DESCRIPTION The MP1488 is a step-up converter designed for driving up to 27 WLEDs (9 strings of 3 WLEDs each) from a 5V system rail. The MP1488 uses a current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low

文件：486.57 Kbytes 頁(yè)數(shù)：11 Pages

MPS

美國(guó)芯源

2.5V-6V Vin升壓WLED驅(qū)動(dòng)器

MP1488是一款升壓變換器，可通過(guò)一個(gè)5V系統(tǒng)軌驅(qū)動(dòng)多達(dá)27個(gè)WLED（9串，每串3個(gè)WLED）。MP1488 采用電流控制模式和定頻架構(gòu)來(lái)調(diào)節(jié)LED 電流，并可以通過(guò)外部電流采樣電阻來(lái)檢測(cè) LED 電流。其 104mV 的低平均反饋電壓降低了功耗，提升了效率。該器件通過(guò)OV引腳監(jiān)測(cè)輸出電壓，并在由于開(kāi)路而出現(xiàn)過(guò)壓情況時(shí)關(guān)閉變換器。\n\n MP1488具有欠壓鎖定（UVLO）保護(hù)、限流保護(hù)和用來(lái)在輸出過(guò)載時(shí)防止芯片損壞的熱過(guò)載保護(hù)。MP1488 采用小尺寸6引腳TSOT23 封裝。 ? 輸入電壓范圍：2.5V 至 6V\n? 集成功率 MOSFET\n? 5V輸入時(shí)最多可驅(qū)動(dòng)27個(gè)白光LED\n? 效率高達(dá)92%\n? 超過(guò)1MHz 的固定開(kāi)關(guān)頻率\n? 開(kāi)路負(fù)載關(guān)斷\n? 104mV 低反饋電壓\n? 軟啟動(dòng)/PWM調(diào)光\n? 欠壓鎖定（UVLO）保護(hù)、過(guò)溫關(guān)斷保護(hù)\n? 內(nèi)部800mA限流保護(hù)\n? 采用 TSOT23-6 封裝;

MPS

美國(guó)芯源

絲印：IZ9YW；Package：TSOT23-6；800mA Fixed Frequency White LED Driver

DESCRIPTION The MP1488 is a step-up converter designed for driving up to 27 WLEDs (9 strings of 3 WLEDs each) from a 5V system rail. The MP1488 uses a current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low

文件：486.57 Kbytes 頁(yè)數(shù)：11 Pages

MPS

美國(guó)芯源

Integrated Circuit FM IF Amp, Demod w/Muting, Center Meter and Signal Meter

Features: ? Low Distortion ? High Signal–to–Noise Ratio ? High Limiting Sensitivity ? Large Muting Attenuation ? Provides Specific Signal for Direct Drive of a Signal Meter with Good Linearity ? Muting Level is Variable by Adjusting the External Resistor ? Hig Stability Agains

文件：25 Kbytes 頁(yè)數(shù)：3 Pages

NTE

Bipolar Junction Transistor

FEATURES ● High voltage capability ● Features of good high temperature ● High switching speed APPLICATION Fluorescent Lamp、 Electronic Ballast、 Computer Switch Power Supply

文件：122.17 Kbytes 頁(yè)數(shù)：3 Pages

JINGDAO

晶導(dǎo)

RF & MICROWAVE TRANSISTORS UHF MOBILE APPLICATIONS

HF to 2000 MHz Class AB Common Source - PowerSO-10RF VHF / UHF radio and digital cellular BTS applications HF to 2000MHz class AB common source - PowerFLAT VHF / UHF radio applications HF to 2000MHz class AB common cource - ceramic packages UHF TV and digital cellular BTS applications 2

文件：60.04 Kbytes 頁(yè)數(shù)：4 Pages

STMICROELECTRONICS

意法半導(dǎo)體