400mV to 5.5V Input, 500mA nanoPower Boost Converter with Short-Circuit Protection and Automatic Pass-Through Mode

The MAX17227J is a nanoPower boost converter capable of delivering a load up to 500mA peak inductor current and offering automatic pass-through operation, True Shutdown™, cycle-by-cycle inductor current limit, short-circuit, and thermal-protection features. The MAX17227J offers ultra-low quiescent current, small total solution size, and high efficiency throughout the load and line range. The MAX17227J is ideal for battery-powered applications where long battery life is a must and high efficiency is required at all power levels.

The MAX17227J utilizes an adaptive on-time, pulse-frequency-modulation (PFM) control scheme that consumes ultra-low quiescent current. The MAX17227J features True Shutdown mode, where the output disconnects from the input with no forward or reverse current. The active discharge resistor feature pulls the charge from the output capacitor.

The MAX17227J is offered in space-saving and cost-effective 1.58mm x 0.89mm, 6-bump WLP (3 x 2, 0.4mm pitch) and 2mm x 2mm, 8-pin TDFN packages. The operating temperature range is from -40°C to +125°C.

Applications

* Medical * Clinical Instrumentation * Battery-Powered Medical Equipment * Industrial * Emergency Lighting * IoT Sensors * Consumer * Wi-Fi® Module * Near-Band IoT * Wearable Devices

* 350nA Quiescent Supply Current* Output Short-Circuit Protection* Automatic Pass-Through Mode

* Overcurrent and Overtemperature Protected

* 95% Peak Efficiency, 89% or Higher at 500μA* Typical 300mA Output Current at 5.0V (VIN > 3.6V)* 400mV to 5.5V Input Voltage Range* 880mV Minimum Startup Voltage* Single Resistor-Adjustable Output Voltage

* 2.3V to 5.2V Output Voltage Range with 100mV Steps* 5.4V Output Voltage Setting Available

* 500mA Peak Inductor Current Limit* Active Discharge Feature* 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