Analog Devices MAX17225

Description

The MAX17220–MAX17225 is a family of ultra-low quiescentcurrent 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 havepost-startup enable transient protection (ETP), allowingthe output to remain regulated for input voltages downto 400mV, depending on load current. The MAX17220–MAX17225 offer ultra-low quiescent current, small totalsolution size, and high efficiency throughout the entireload 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/MAX17221: 225mA ILIM
• MAX17222/MAX17223: 500mA ILIM
• MAX17224/MAX17225: 1A ILIM
• MAX17220/MAX17222/MAX17224 Enable TransientProtection (ETP)
• 2mm x 2mm, 6-Pin μDFN
• 0.88mm x 1.4mm, 6-Bump WLP (2 x 3, 0.4mm Pitch)

Typical applications

• Low-Power Wireless Communication Products
• Tiny, Low-Power IoT Sensors
• Battery-Powered Medical Equipment
• Primary-Cell Portable Systems , Secondary-Cell Portable Systems, Wearable Devices
• Supercapacitor Backup for Real-Time Clock (RTC)/Alarm Buzzers
• Optical Heart-Rate Monitoring (OHRM) LED Drivers

More information

• Datasheet
• IC product information