LM5149-Q1

LM5149-Q1 80-V Automotive Synchronous Buck DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto+125°C ambientoperatingtemperature ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?TwointegratedEMImitigationmechanisms –ActiveEMIFilt

LM5149-Q1

LM5149-Q1 80-V Automotive, Synchronous, Buck, DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto+125°C ambientoperatingtemperature ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?TwointegratedEMImitigationmechanisms –ActiveEMIFilt

LM5149-Q1

LM5148-Q1 80-V, Automotive, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto+125°C ambientoperatingtemperature ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?IntegratedEMImitigation –Selectabledualrandomspread

LM5149-Q1

LM5149 80-V, Synchronous, Buck, DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter

1Features ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?TwointegratedEMImitigationmechanisms –ActiveEMIFilterforenhancedEMI performanceatlowerfrequencies –Selectabledualrandomspreadspectrum (DRSS)forenhancedEMIperforma

LM5149-Q1

LM25148-Q1 42-V, Automotive, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto+125°C ambientoperatingtemperature ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?IntegratedEMImitigation –Selectabledualrandomspread

LM5149-Q1

LM5137F-Q1 Automotive, 4V to 80V, 100% Duty Cycle Capable, Dual-Channel Synchronous Buck Controller Family for Functional Safety Applications

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto125°C ambientoperatingtemperature ?FunctionalSafety-Complianttargeted –Developedforfunctionalsafetyapplications ?ThreeorderablepartnumbersforCapable, ASILB,andASILDoption

LM5149-Q1

LM25148-Q1 42-V, Automotive, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto+125°C ambientoperatingtemperature ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?IntegratedEMImitigation –Selectabledualrandomspread

LM5149-Q1

具有超低 IQ 和集成有源 EMI 濾波器的 80V 汽車類同步降壓直流/直流控制器; ? 符合面向汽車應(yīng)用的 AEC-Q100 標(biāo)準(zhǔn)： \n? 器件溫度等級(jí) 1：–40°C 至 +125°C 環(huán)境工作溫度范圍\n \n? 提供功能安全 \n? 可幫助進(jìn)行功能安全系統(tǒng)設(shè)計(jì)的文檔 \n \n? 兩個(gè)集成式 EMI 緩解機(jī)制 \n? 有源 EMI 濾波器，可提高低頻下的 EMI 性能\n? 可選雙隨機(jī)展頻 (DRSS)，可增強(qiáng)低頻和高頻頻帶上的 EMI 降低性能\n? EMI 平均降低了 25dBμV\n? 將外部差分模式輸入濾波器尺寸減小了 50% 并降低了系統(tǒng)成本\n \n? 多功能同步降壓直流/直流控制器 \n? 寬輸入電壓范圍為 3.5V 至 80V\n? 1% 精度、3.3V/5V/12V 固定電壓或 0.8V 至 55V 可調(diào)輸出電壓\n? 150°C 最大結(jié)溫\n? 關(guān)斷模式電流：2.3μA\n? 空載睡眠電流：9.5μA\n? 最多可堆疊兩個(gè)相位\n \n? 開關(guān)頻率范圍為 100kHz 至 2.2MHz \n? 同步輸入和同步輸出功能\n \n? 固有保護(hù)特性，可實(shí)現(xiàn)穩(wěn)健的設(shè)計(jì) \n? 內(nèi)部斷續(xù)模式過流保護(hù)\n? 使能和 PGOOD 功能\n? VCC、VDDA 和柵極驅(qū)動(dòng) UVLO 保護(hù)\n? 具有遲滯功能的熱關(guān)斷保護(hù)\n \n? 使用 LM5149-Q1 并借助 WEBENCH Power Designer 創(chuàng)建定制設(shè)計(jì)方案;

LM5149-Q1 是一款 80V 超低 IQ 同步降壓直流/直流控制器，適合高電流單輸出應(yīng)用。該控制器使用峰值電流模式控制架構(gòu)，可實(shí)現(xiàn)簡單環(huán)路補(bǔ)償、快速瞬態(tài)響應(yīng)和出色的負(fù)載和線路調(diào)節(jié)性能。 LM5149-Q1 可設(shè)置為以雙相模式運(yùn)行，實(shí)現(xiàn)精確的電流共享，適合高電流應(yīng)用。它可在低至 3.5V 的 VIN 和接近 100% 的占空比（如果需要）下運(yùn)行。\n\n LM5149-Q1 有兩個(gè)獨(dú)特的 EMI 降低特性：有源 EMI 濾波器和雙隨機(jī)展頻 (DRSS)。有源 EMI 濾波器可檢測(cè)直流輸入總線上的任何噪聲或紋波電壓，并注入異相消除信號(hào)以減少干擾。DRSS 將低頻三角調(diào)制與高頻隨機(jī)調(diào)制相結(jié)合，可分別在低頻和高頻頻帶上降低 EMI。此項(xiàng)混合技術(shù)符合業(yè)界通用的 EMC 測(cè)試中指定的多種分辨率帶寬 (RBW) 設(shè)置。\n\n LM5149-Q1 的其他特性包括 150°C 最大工作結(jié)溫、可在輕負(fù)載條件下降低電流消耗的用戶可選二極管仿真功能、用于故障報(bào)告和輸出監(jiān)控的開漏電源正常標(biāo)志、精密使能輸入、單調(diào)啟動(dòng)至預(yù)偏置負(fù)載、集成 VCC 偏置電源穩(wěn)壓器和自舉二極管、3ms 內(nèi)部軟啟動(dòng)時(shí)間和帶自動(dòng)恢復(fù)功能的熱關(guān)斷保護(hù)。\n\n LM5149-Q1 控制器采用 3.5mm × 5.5mm 熱增強(qiáng)型 24 引腳 VQFN 封裝 ，該封裝具有可濕性側(cè)面引腳，便于在制造期間進(jìn)行光學(xué)檢測(cè)。

LM5149-Q1

LM25149 42-V Synchronous Buck DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter

LM5149-Q1_V01

LM5149-Q1 80-V Automotive, Synchronous, Buck, DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter

1Features ?AEC-Q100qualifiedforautomotiveapplications: –Devicetemperaturegrade1:–40°Cto+125°C ambientoperatingtemperature ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?TwointegratedEMImitigationmechanisms –ActiveEMIFilt