EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX77597 36V, 300mA, Buck Converter with 1.1A I Q General Description Benefits and Features The MAX77597 is a small, synchronous buck converter Flexible Power for Systems That Require a Wide with integrated switches. The device is designed to Input Voltage Range deliver up to 300mA with input voltages from 3.5V to V Range: 3.5V to 36V IN 36V, while using only 1.1A quiescent current at no load Up to 300mA Output Current (fixed-output version). Voltage quality can be monitored Fixed 3.3V, Output Voltage by observing the RESET signal. The device can operate 98% (Max) Duty Cycle Operation with Low near dropout by running at 98% duty cycle, making it ideal Dropout for battery-powered applications. Operates from 5V, 12V, or 20V USB Type-C Input Power The device offers fixed 3.3V. Frequency is fixed at Operates from 2S, 3S, or 4S Li-Ion Battery 1.7MHz, which allows for small external components and reduced output ripple. The device offers both forced-PWM Minimizes Power Consumption and Extends Battery and skip modes of operation, with ultra-low quiescent cur- Life rent of 1.1A in skip mode. 1.1A Quiescent Current (3.3V Fixed Output Voltage) The MAX77597 is available in a small (2mm x 2.5mm) 86% Peak Efficiency at 12V , 3.3 V IN OUT 10-pin TDFN package and operates across the -40C to +85C temperature range. Minimizes Solution Size 1.7MHz Operating Frequency Applications Small 2.0mm x 2.5mm x 0.75mm 10-Pin TDFN Package Portable Devices Powered from 2s, 3s, or 4s Li+ Batteries Robust Solution USB Type-C Devices Short-Circuit, Thermal Protections Point-of-Load Applications 6.67ms Internal Soft-Start Minimizes Inrush Current Current-Mode Control Architecture Ordering Information appears at end of data sheet. Up to 42V Input Voltage Tolerance 19-100785 Rev 1 4/20MAX77597 36V, 300mA, Buck Converter with 1.1A I Q Absolute Maximum Ratings (Voltages Referenced to PGND) OUT/FB Short-Circuit Duration..................................Continuous SUP .......................................................................-0.3V to +42V Continuous Power Dissipation (T = +70C) A EN..............................................-0.3V to MIN (24V, V + 0.3V) (derate 9.8mW/C above +70C) ................................784mW SUP BST to LX ..............................................................................+6V Operating Temperature Range ........................... -40C to +85C BST......................................................................-0.3V to +47V Junction Temperature ......................................................+150C MODE, OUT/FB, RESET.......................-0.3V to V + 0.3V Storage Temperature Range ............................ -65C to +150C BIAS AGND.................................................................-0.3V to +0.3V Lead Temperature (soldering, 10s) ...................................300C BIAS...................................................................-0.3V to +6.0V Soldering Temperature (reflow) .......................................+260C Maxim Integrated 2 www.maximintegrated.com