Datasheet MAX17227A (Maxim)

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MAX17227A 400mV to 5.5V Input, 2A nanoPower Boost Converter with Short-Circuit Protection and True Shutdown General Description Benefits and Features
The MAX17227A is a nanoPower boost converter capable ● 350nA Quiescent Supply Current from Output of delivering load up to 2A peak inductor current and offer- ● Output Short-Circuit Protection ing True Shutdown™, cycle-by-cycle inductor current lim- ● True Shutdown Mode it, short-circuit, and thermal protection. During shutdown, • 1nA Shutdown Current current drawn from the input pin is 1nA. The MAX17227A • Output Disconnects from Input offers ultra-low quiescent current, small total solution size, • No Reverse-Current with Any Voltage on VOUT and high efficiency throughout the load and line range. ● 96% Peak Efficiency, 90% or Higher at 500μA The MAX17227A is ideal for battery-powered applications ● Typical 850mA Output Current at 5.0V (V where long battery life is a must and high efficiency is re- IN = 3.0V) ● 400mV to 5.5V Input Range, Up to 5.35V in quired at all power levels. Regulation The MAX17227A utilizes adjustable on-time, pulse-fre- ● 880mV Minimum Startup Voltage quency-modulation (PFM) control scheme that consumes ● Single Resistor-Adjustable Output Voltage ultra-low quiescent current. The MAX17227A features • 2.3V to 5.2V Output Voltage Range with 100mV True Shutdown mode where the output disconnects from Steps the input with no forward or reverse-current. This saves • 5.4V, 5.5V Output Voltage Settings Available precious energy from the battery for systems that dynam- ● 2A Peak Inductor Current Limit ically turn on and off by having the ability to startup into a ● Thermal Shutdown Protection precharged output capacitor. ● Multiple Package Options The MAX17227A is offered in a space-saving and cost- • 1.58mm x 0.89mm, 0.4mm Pitch, 6-Bump (3 x 2) effective 1.58mm x 0.89mm, 6-bump WLP (3 x 2, 0.4mm WLP pitch) and 8-pin, 2mm x 2mm TDFN packages. The oper- • 2mm x 2mm, 8-Pin TDFN ating temperature range is from -40°C to +125°C. ● -40°C to +125°C Operating Temperature Range
Applications Ordering Information appears at end of data sheet.
● Consumer • WiFi Module • Near-Band IoT • Wearable Audio ● Industrial • Emergency Lighting • IoT Sensors ● Medical • Clinical Instrumentation True Shutdown is a trademark of Maxim Integrated Products, Inc. 19-100743; Rev 1; 12/20 Document Outline General Description Applications Benefits and Features Typical Operating Circuit Absolute Maximum Ratings Package Information TDFN WLP Electrical Characteristics Electrical Characteristics (continued) Typical Operating Characteristics Typical Operating Characteristics (continued) Pin Configurations WLP TDFN Pin Description Functional Diagrams Detailed Description Control Scheme Output Voltage Selection Fixed-Output Voltage Version Features Enable Soft-Start Control Short-Circuit Protection Thermal Shutdown Design Procedure Inductor Selection Input Capacitor Output Capacitor PCB Layout Guidelines Thermal Considerations Ordering Information Revision History