General Description

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), 500mA (MAX17222/MAX17223), and 1A (MAX17224/MAX17225) peak inductor current limits allow flexibility when choosing inductors. The MAX17220/MAX17222/MAX17224 versions have poststartup 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

● Optical Heart-Rate Monitoring (OHRM) LED Drivers

● Supercapacitor Backup for RTC/Alarm Buzzers

● Primary-Cell Portable Systems

● Tiny, Low-Power IoT Sensors

● Secondary-Cell Portable Systems

● Wearable Devices

● Battery-Powered Medical Equipment

● Low-Power Wireless Communication Products

Benefits and Features

● 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: 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)