EmbeddedRelated.com
The 2026 Embedded Online Conference
MAX17222ELT+T

ADIMAX17222ELT+T

Analog Devices Inc./Maxim Integrated
Boost Switching Regulator IC Positive Adjustable 1.8V 1 Output 500mA (Switch) 6-WDFN
Active7,380 in stock

Overview

The MAX17222ELT+T is an ultra-low quiescent current synchronous boost converter designed for high-efficiency power delivery in battery-operated devices. It features an incredibly low 300nA typical IQ and operates from an input voltage as low as 0.4V, making it ideal for systems running on a single alkaline, NiMH, or Li-ion cell. The device provides a 500mA peak switch current and uses a single external resistor to set the output voltage from 1.8V to 5V.

Why Choose This Part

The primary advantage is the ultra-low 300nA quiescent current, which significantly reduces standby power drain. It integrates a True Shutdown mode that disconnects the output from the input to prevent reverse current, and its 0.4V minimum startup voltage enables deep battery discharge or operation from low-voltage energy harvesting sources.

Applications

Wearable Health Monitors
Powers optical heart-rate monitoring LEDs and biometric sensors from small form-factor batteries.
IoT Long-Life Sensors
Extends the life of remote sensors by minimizing standby power consumption to 0.5uA in shutdown mode.
Supercapacitor Backup
Regulates power from supercapacitors to maintain RTC or alarm functions during primary battery swaps.
Portable Medical Devices
Provides stable power for low-power wireless communication and clinical monitoring circuits.

Key Specifications

Function Step-Up
Topology Boost
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 6-WDFN
Current - Output 500mA (Switch)
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 2.5MHz
Operating Temperature -40degC ~ 85degC (TA)
Synchronous Rectifier Yes
Voltage - Input (Max) 5.5V
Voltage - Input (Min) 0.4V
Voltage - Output (Max) 5V
Supplier Device Package 6-uDFN (2x2)
Voltage - Output (Min/Fixed) 1.8V

Getting Started

Evaluation can be performed using the MAX17222EVKIT, which allows for testing various output configurations and efficiency measurements. Designers need only a single 1% resistor to set the desired output voltage and a few ceramic capacitors for a complete power solution.

Also Consider

MCP1640 MCHPMicrochip Technology - Offers a slightly higher startup voltage of 0.65V but provides a low-cost alternative for high-efficiency boost regulation.
The 2026 Embedded Online Conference