BUY TSM1052 https://www.utsource.net/itm/p/11212132.html
IC CONTROLLER CC/CV SMPS SOT23-6
Description: TSM1052 is a SOT23-5 package, low-power, low-voltage, high-efficiency, step-down DC-DC converter with a wide input voltage range of 2.7V to 5.5V. Features: Low-power, low-voltage, high-efficiency step-down DC-DC converter Wide input voltage range of 2.7V to 5.5V Output voltage range of 0.8V to 5V Output current up to 1.5A Low quiescent current of 1.2μA Internal compensation Internal soft start Over-temperature protection Over-current protection Short-circuit protection Applications: Battery-powered systems Portable electronics Wearable electronics Automotive systems Industrial systems (For reference only)