Product: 3.3V regulator module Key benefits Reliable 3.3V output from a wide range of input sources (1.8V–5V). Recommended to supply above 2V for performance. conversion efficiency up to 96%, reducing heat and extending battery life; efficiency improves when the inputtooutput voltage difference is smaller. Delivers up to 3A of output current for powerhungry loads. Low idle consumption with two modes: 6mA typical static current, or 50uA in powersaving mode. Simple, adjustable outputdivider design for custom applications using the provided formula. Technical details and configuration Input voltage: 1.8V–5V (recommended input >2V) Output voltage: 3.3V Output current: up to 3A Conversion efficiency: up to 96% (higher when inputoutput voltage difference is small) Static power consumption: 6mA (normal), 50uA (power saving mode) Feedback formula for resistor selection: R3 = R1 × (Vout / VFB − 1) Typical VFB = 500mV Example for 3.3V output: R1 = 180K, R3 = 1M Compatibility and performance notes Works with common power sources in the 1.8V–5V range including singlecell Liion, USB 5V rails, and 3.3V/2.5V logic rails (when used as part of a system). Suitable for applications that require efficient DCDC conversion and up to 3A continuous current. The resistordivider feedback allows finetuning and easy integration into custom circuits while preserving the specified 3.3V output. Practical use scenarios Batterypowered IoT device: convert a singlecell Liion (nominal 3.7V) or lowervoltage cell to a stable 3.3V rail while maximizing battery runtime with conversion efficiency. USBpowered embedded system: take USB 5V input and produce a stable 3.3V supply up to 3A for microcontrollers, wireless modules, and sensors. Sensor and actuator modules: provide a compact 3.3V supply for multiple sensors or peripherals that require moderate to current, with the option to lower idle consumption using powersaving mode. Why choose this regulator efficiency and current capability reduce thermal issues and support demanding loads. Low standby consumption conserves energy in batteryoperated systems. Simple resistorbased feedback formula makes it easy to verify or adapt the design while keeping the core 3.3V output specification intact.