Maxim Integrated MAX17222ELT

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 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.

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)

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