400mV to 5.5V Input, 2A nanoPower Boost Converter with Short-Circuit Protection and True Shutdown

The MAX17227A is a nanoPower boost converter capable of delivering load up to 2A peak inductor current and offering True Shutdown™, cycle-by-cycle inductor current limit, short-circuit, and thermal protection. During shutdown, current drawn from the input pin is 1nA. The MAX17227A offers ultra-low quiescent current, small total solution size, and high efficiency throughout the load and line range. The MAX17227A is ideal for battery-powered applications where long battery life is a must and high efficiency is required at all power levels.

The MAX17227A utilizes adjustable on-time, pulse-frequency-modulation (PFM) control scheme that consumes ultra-low quiescent current. The MAX17227A features True Shutdown mode where the output disconnects from the input with no forward or reverse-current. This saves precious energy from the battery for systems that dynamically turn on and off by having the ability to startup into a precharged output capacitor.

The MAX17227A is offered in a space-saving and costeffective 1.58mm x 0.89mm, 6-bump WLP (3 x 2, 0.4mm pitch) and 8-pin, 2mm x 2mm TDFN packages. The operating temperature range is from -40°C to +125°C.

Applications

* Clinical Instrumentation * Consumer * Emergency Lighting * Industrial * IoT Sensors * Medical * Near-Band IoT * Wearable Audio * WiFi Module

* 350nA Quiescent Supply Current from Output* Output Short-Circuit Protection* True Shutdown Mode

* 1nA Shutdown Current* Output Disconnects from Input* No Reverse-Current with Any Voltage on VOUT

* 96% Peak Efficiency, 90% or Higher at 500μA* Typical 850mA Output Current at 5.0V (VIN = 3.0V)* 400mV to 5.5V Input Range, Up to 5.35V in Regulation* 880mV Minimum Startup Voltage* Single Resistor-Adjustable Output Voltage

* 2.3V to 5.2V Output Voltage Range with 100mV Steps* 5.5V Output Voltage Setting Available

* 2A Peak Inductor Current Limit* Thermal Shutdown Protection* Multiple Package Options

* 1.58mm x 0.89mm, 0.4mm Pitch, 6-Bump (3 x 2) WLP* 2mm x 2mm 8-Pin TDFN

* -40°C to +125°C Operating Temperature Range