MAX17291B

RECOMMENDED FOR NEW DESIGNS

High-Voltage Micropower Boost Converter

Industry Highest Efficiency Boost Converter in Smallest Solution

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $0.70

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Overview

28μA Quiescent Supply Current from Input
Output Short Circuit Protection
Overtemperature Protection
True Shutdown Mode
- 13nA Shutdown Current
- No Reverse Current from OUT
90% Peak Efficiency
1.8V to 4.5V Input Range
5.5V to 20V Output Voltage Range
100mA Peak Inductor Current Limit
1.27mm x 0.87mm 6-Bump WLP (3 x 2, 0.4mm Pitch) Package
-40°C to +125°C Temperature Range

The MAX17291B is a low quiescent current boost (step-up) DC-DC converter with a 100mA 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 set with an external resistor-divider. The MAX17291B offers low quiescent current, small total solution size, and high efficiency throughout the entire load range. The MAX17291B is a highly integrated boost converter designed for applications requiring high voltage and tiny solution size, such as sensor modules. It integrates a power switch, power diode, and output load switch. It can output 5.5V to 20V from a 1.8V to 4.5V input supply range. The load switch is turned off under shutdown mode, truly disconnecting the load from the input voltage thus minimizing the leakage current during shutdown mode. The device operates in a discontinuous conduction mode of operation. The device features short-circuit and thermal protection.

The MAX17291B employs a power-save mode with pulse frequency modulation (PFM) to improve efficiency. The on-time is determined by a peak inductor current limit of 100mA. Once the inductor current hits its limit, the on-time is terminated and the power diode is forward-biased. During the off-time, charge is transferred to output capacitance, causing its voltage to rise. The off-time is terminated once the inductor current ramps down to zero; the load is supplied by the output capacitor and the output voltage declines. When the FB voltage falls below the reference voltage, the device initiates the on-time again to bring the output voltage up. The MAX17291B will clamp the average input current to maximum of 50mA.

Applications

Primary Cell Portable Systems
Battery Powered Medical Equipment
Tiny, Low-Power IoT Sensors
Low-Power Wireless Communication Products
Secondary-Cell Portable Systems

Part Models: 2
1ku List Price: Starting From $0.70

Documentation

Data Sheet 1

MAX17291B: High-Voltage Micropower Boost Converter Data Sheet (Rev.0) 12/20/2021

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX17291BANT+	6-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX17291BANT+T	6-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

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Evaluation Kits

Evaluation Kit for the MAX17291B

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Features and Benefits

Evaluates the MAX17291B IC in a 6-Bump WLP
(3 x 2 Bump, 0.4mm Pitch)
1.8V to 4.5V Input Range
5.5V to 20V Configurable Output Voltage
Up to 100mA Input Peak Current
Proven 2-Layer, 1.5oz Copper PCB Layout
Demonstrates Compact Solution Size
Fully Assembled and Tested

Product Details

The MAX17291B WLP evaluation kit (EV kit) evaluates the MAX17291B IC packaged in a WLP. The MAX17291B is a low quiescent current boost (step-up) DC-DC converter with a 100mA peak inductor current limit, True Shutdown™, and short-circuit protection. The EV kit operates over an input range of 1.8V to 4.5V and provides resistor-configurable output voltages from 5.5V to 20V. The EV kit comes with the MAX17291BANT+ (WLP) installed.