LM5165

LM5165 SNVSA47D – FEBRUARY 2016 – REVISED DECEMBER 2022 LM5165 3-V to 65-V Input, 150-mA Synchronous Buck Converter With Ultra-Low IQ 1 Features Wide input voltage range of 3 V to 65 V 10.5-µA no-load quiescent current –40°C to 150°C junction temperature range Fixed (3.3 V and 5 V) or adjustable output voltages Meets EN55022 / CISPR 22 EMI standards Integrated 2-Ω PMOS buck switch – Supports 100% duty cycle for low dropout Integrated 1-Ω NMOS synchronous rectifier – Eliminates external rectifier diode Programmable current limit setpoint (four levels) Selectable PFM or COT mode operation 1.223-V ±1% internal voltage reference 900-µs internal or programmable soft start Active slew rate control for low EMI Diode emulation mode and pulse skipping for ultra- high light-load efficiency performance Monotonic start-up into prebiased output No loop compensation or bootstrap components Precision enable and input UVLO with hysteresis Pin-to-pin compatible with the LM5166 Thermal shutdown protection with hysteresis 10-pin, 3-mm × 3-mm VSON package Use TPSM265R1 module for faster time to market Create a custom regulator design using WEBENCH® Power Designer 2 Applications 4–20 mA loop-powered sensors Automotive and battery-powered equipment High-voltage LDO replacement Industrial control systems General-purpose bias supplies VIN = 3 V...65 V CIN 1F VIN SW LM5165X EN VOUT PGOOD SS LF 68 ¢H VOUT = 5 V * COUT 22 ¡F HYS ILIM RT ...