LM5148-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

LM5148-Q1

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

1Features •FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign •IntegratedEMImitigation –Selectabledualrandomspreadspectrum (DRSS)featureforenhancedEMIperformance acrosslowandhigh-frequencybands –OptimizedforCISPR32ClassBrequ

LM5148-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

LM5148-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

LM5148-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

LM5148-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

LM5148-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

LM5148-Q1

具有超低 IQ 的汽车类 80V 同步直流/直流降压控制器; • AEC-Q100 qualified for automotive applications: \n• Device temperature grade 1: –40°C to +125°C ambient operating temperature\n \n• Functional Safety-Capable \n• Documentation available to aid functional safety system design \n \n• Integrated EMI mitigation \n• Selectable dual random spread spectrum (DRSS) feature for enhanced EMI performance across low and high-frequency bands\n• Optimized for CISPR 25 Class 5 requirements\n \n• Versatile synchronous buck DC/DC controller \n• Wide input voltage range of 3.5 V to 80 V\n• 1% accurate, fixed 3.3 V, 5 V, 12 V, or adjustable output from 0.8 V to 55 V\n• 150°C maximum junction temperature\n• Lossless DCR or shunt current sensing\n• Shutdown mode current of 2.3 µA\n• No-load sleep current of 9.5 µA\n• Internal soft-start ramp of 3 ms\n• Stackable up to two phases\n• Internal bootstrap diode\n \n• Switching frequency from 100 kHz to 2.2 MHz \n• SYNC in and SYNC out capability\n• Selectable PFM or FPWM modes\n \n• Inherent protection features for robust design \n• Internal hiccup mode overcurrent protection\n• ENABLE and PGOOD functions\n• VCC, VDDA, and gate-drive UVLO protection\n• Internal or external loop compensation\n• Thermal shutdown protection with hysteresis\n \n• Create a custom design using the LM5148-Q1 with WEBENCH Power Designer;

LM5148-Q1 是一款 80V 超低 IQ 同步降压直流/直流控制器，适合高电流单输出应用。该控制器使用峰值电流模式控制架构，可实现简单环路补偿、快速瞬态响应和出色的负载和线路调节性能。 LM5148-Q1 可设置为以交错模式（并联输出）运行，实现精确的电流共享，适合高电流应用。它可在低至 3.5V 的输入电压和接近 100% 的占空比（如果需要）下运行。\n\n LM5148-Q1 具有一种独特的 EMI 降低特性，称为双随机展频 (DRSS)。将低频三角调制与高频随机调制相结合，可分别在低频和高频频带上降低 EMI 干扰。此项混合技术符合业界通用的 EMC 测试中指定的多种分辨率带宽 (RBW) 设置。\n\n LM5148-Q1 的其他特性包括 150°C 最大工作结温、可在轻负载条件下降低电流消耗的用户可选二极管仿真功能、用于故障报告和输出监控的开漏电源正常标志、精密使能输入、单调启动至预偏置负载、集成 VCC 偏置电源稳压器、3ms 内部软启动时间和带自动恢复功能的热关断保护。\n\n LM5148-Q1 控制器采用 3.5mm × 5.5mm 热增强型 24 引脚 VQFN 封装 ，该封装具有可湿性侧面引脚，便于在制造期间进行光学检测。

LM5148-Q1_V01

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

LM5148-Q1_V02

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