Overview

Features and Benefits

  • 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

Product Details

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

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Design Resources

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.

Sample & Buy


Ordering FAQs


See our Ordering FAQs for answers to questions about online orders, payment options and more.

 

Buy Now Pricing


(**) Displayed Buy Now Price and Price Range is based on small quantity orders.

 

List Pricing


(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

 

Sampling


Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


Price Table Help