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High-Voltage, 1A Micropower Boost Converter with Short-Circuit Protection and True Shutdown

5.5V High Output Voltage Boost Converter with Lowest Quiescent Current and Highest Efficiency Across Load Currents

Product Details

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 5.5
VOUT1 (V) (max) 20
IOUT1 (A) (max) 1
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.028
Shutdown Mode Supply Current (µA) (typ) 0.05
Shutdown Mode Supply Current (µA) (max) 0.2
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools EE-Sim
Package/Pins TDFN-CU/8
THIN WLP/6
Budgetary
Price (See Notes)
0.78
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Simplified Block Diagram

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Parameters

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 5.5
VOUT1 (V) (max) 20
IOUT1 (A) (max) 1
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.028
Shutdown Mode Supply Current (µA) (typ) 0.05
Shutdown Mode Supply Current (µA) (max) 0.2
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=14728', '')
Package/Pins TDFN-CU/8
THIN WLP/6
Budgetary
Price (See Notes)
0.78

Key Features

  • 28μA Quiescent Supply Current from Input
  • Output Short-Circuit Protection
  • Overtemperature Protection
  • Constant Frequency in CCM
  • True Shutdown Mode
    • 0.05μA Shutdown Current
    • No Reverse Current from OUT
  • 91% Peak Efficiency
  • 1.8V to 5.5V Input Range
  • 5.5V to 20V Output Voltage Range
  • 1A Peak Inductor Current Limit
  • Multiple Package Options
    • 1.27mm x 0.87mm, 6-Bump (3 x 2), 0.4mm Pitch WLP
    • 2mm x 2mm, 8-Pin TDFN
  • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Portable Medical Equipment
  • Sensor Power Supply
  • Wearable Devices

Description

The MAX17291 is a low quiescent current boost (step-up) DC-DC converter with a 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 set with an external resistor-divider.

The MAX17291 offers low quiescent current, small total solution size, and high efficiency throughout the entire load range. The MAX17291 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 up to 20V. 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 with a switching frequency of 1.0MHz in continuous conduction mode (CCM). The MAX17291 switch current limit is 1A. It has 2.2ms built-in soft-start time to minimize inrush current. The device features short-circuit and thermal protection.

The MAX17291 is offered in space-saving, cost-effective 1.27mm x 0.87mm, 6-bump WLP (3 x 2, 0.4mm pitch) and 2mm x 2mm, 8-pin TDFN packages. The operating temperature range is from -40°C to +125°C.

Simplified Block Diagram

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .