400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown

The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converters with a 225mA/0.5A/1A peak inductor current limit and True Shutdown™. True Shutdown disconnects the output from the input with no forward or reverse current. The output voltage is selectable using a single standard 1% resistor. The 225mA (MAX17220/MAX17221), 500mA (MAX17222/MAX17223), and 1A (MAX17224/MAX17225) peak inductor current limits allow flexibility when choosing inductors. The MAX17220/MAX17222/MAX17224 versions have post-startup enable transient protection (ETP), allowing the output to remain regulated for input voltages down to 400mV, depending on load current. The MAX17220–MAX17225 offer ultra-low quiescent current, small total solution size, and high efficiency throughout the entire load range. The MAX17220–MAX17225 are ideal for battery applications where long battery life is a must.

Applications

* Battery-Powered Medical Equipment

* Low-Power Wireless Communication Products

* Optical Heart-Rate Monitoring (OHRM) LED Drivers

* Primary-Cell Portable Systems

* Secondary-Cell Portable Systems

* Supercapacitor Backup for Real-Time Clock (RTC)/Alarm Buzzers

* Tiny, Low-Power IoT Sensors

* Wearable Devices

* 300nA Quiescent Supply Current Into OUT

* True Shutdown Mode

* 0.5nA Shutdown Current

* Output Disconnects from Input

* No Reverse Current with VOUT 0V to 5V

* 95% Peak Efficiency

* 400mV to 5.5V Input Range

* 0.88V Minimum Startup Voltage

* 1.8V to 5V Output Voltage Range

* 100mV/Step

* Single 1% Resistor Selectable Output

* 225mA, 500mA, and 1A Peak Inductor Current Limit

* MAX17220/MAX17221: 225mA ILIM

* MAX17222/MAX17223: 500mA ILIM

* MAX17224/MAX17225: 1A ILIM

* MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)

* 2mm x 2mm 6-Pin µDFN

* 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)