低壓恒流DC-DC驅(qū)動(dòng)

MT7282是一款2.5V~40V寬輸入范圍，白光LED恒流驅(qū)動(dòng)芯片，MT7282可設(shè)置為降壓，升壓和升降壓型拓?fù)浣Y(jié)構(gòu)?？稍贏(yíng)C12V/DC12V的輸入電壓下達(dá)到10W的驅(qū)動(dòng)能力。\n\nMT7282采用固定工作頻率，電流模式來(lái)調(diào)節(jié)LED電流，系統(tǒng)瞬態(tài)響應(yīng)快，環(huán)路穩(wěn)定，設(shè)計(jì)簡(jiǎn)單。\n\nMT7282采用高位電流檢測(cè)技術(shù)，可以通過(guò)外部電阻設(shè)置LED的平均工作電流。200mV的低基準(zhǔn)電壓有效地降低了功率損耗，提高了效率。350kHz固定工作頻率最大限度的減少了外部電感，輸入與輸出電容。\n\nMT7282通過(guò)單個(gè)控制引腳支持PWM調(diào)光和模擬調(diào)光。\n\n芯片內(nèi)部包括過(guò)壓保護(hù)（OVP）、過(guò)流保護(hù)（O ? 輸入電壓范圍：2.5V~40V\n? 高達(dá)95%的效率\n? 逐周期過(guò)流保護(hù)\n? 內(nèi)置0.2Ω功率MOS管\n? 支持升壓，升降壓，降壓的拓?fù)浣Y(jié)構(gòu)\n? LED過(guò)溫保護(hù)\n? 采用低等效串聯(lián)電阻（ESR）陶瓷電容即可保證系統(tǒng)穩(wěn)定\n? 過(guò)溫保護(hù)和過(guò)壓保護(hù)\n? 過(guò)壓保護(hù)外部可調(diào)節(jié)\n? 固定350kHz工作頻率\n? 降低EMI的抖頻技術(shù)\n? 低反饋電壓：200mV\n? 可調(diào)節(jié)的軟啟動(dòng)機(jī)制\n? 支持模擬調(diào)光和高達(dá)10kHz的PWM調(diào)光\n? ESOP8封裝;

Maxic

美芯晟

Boost/Buck-Boost/Buck White LED Driver With High Frequency PWM Dimming

文件：353.29 Kbytes 頁(yè)數(shù)：1 Pages

MAXIC

美芯晟

7 watt; A19 Compact Fluorescent; 4100K; 82 CRI; Medium base; 120 volts

文件：123.43 Kbytes 頁(yè)數(shù)：1 Pages

SATCO

Terrestrial Digital Sound Decoder TDSD2

GENERAL DESCRIPTION Performing all digital decoding functions for a NICAM 728 digital stereo sound system, the SAA7282 is a highly integrated CMOS circuit which only requires a DQPSK (Differential Quadrature Phase Shift Keying) demodulator (TDA8732) and minimum external components to achieve a fu

文件：110.27 Kbytes 頁(yè)數(shù)：25 Pages

PHI

PHI

Terrestrial Digital Sound Decoder TDSD2

GENERAL DESCRIPTION Performing all digital decoding functions for a NICAM 728 digital stereo sound system, the SAA7282 is a highly integrated CMOS circuit which only requires a DQPSK (Differential Quadrature Phase Shift Keying) demodulator (TDA8732) and minimum external components to achieve a fu

文件：110.27 Kbytes 頁(yè)數(shù)：25 Pages

PHI

PHI