MAX1797

PRODUCTION

Low-Supply Current, Step-Up DC-DC Converters with True Shutdown

Low-Supply Current Step-Up DC-DC Converter with True-Shutdown™

Data Sheet (Rev. 0) Product Selection Table
Part Models
2
1ku List Price
Starting From $2.60
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Part Details

  • > 95% Efficiency
  • True-Shutdown Circuitry
    • Output Disconnects from Input in Shutdown
    • No External Schottky Diode Needed
  • 25µA Quiescent Supply Current
  • Low-Noise Antiringing Feature
  • LBI/LBO Comparator Enabled in Shutdown
  • 2µA Shutdown Current
  • 8-Pin µMAX Package
MAX1797
Low-Supply Current, Step-Up DC-DC Converters with True Shutdown
max1797 typical application circuit MAX1795, MAX1796, MAX1797: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

Technical Articles 3

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Hardware Ecosystem

Parts Product Life Cycle Description
Internal Power Switch Boost Regulators 9
MAX1674
PRODUCTION High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1675
PRODUCTION High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1676
PRODUCTION High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX856
PRODUCTION 3.3V/5V or Adjustable Output, Step-Up DC-DC Converters
MAX857
PRODUCTION 3.3V/5V or Adjustable Output, Step-Up DC-DC Converters
MAX858
PRODUCTION 3.3V/5V or Adjustable Output, Step-Up DC-DC Converters
MAX859
PRODUCTION 3.3V/5V or Adjustable Output, Step-Up DC-DC Converters
MAX866
PRODUCTION 3.3V/5V or Adjustable Output, Single-Cell DC-DC Converters
MAX867
Obsolete 3.3V/5V or Adjustable Output, Single-Cell DC-DC Converters
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Evaluation Kits

MAX1797EVKIT

Evaluation Kit for the MAX1795, MAX1796, MAX1797

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Features and Benefits

  • Output Disconnects from Input During Shutdown
  • Operates Down to 0.7V Input Supply Voltage
  • Adjustable Output Voltage (2V to 5.5V, External Divider)
  • Up to 500mA Output Current
  • No External Schottky Diode Required
  • Synchronous Rectification for Improved Efficiency
  • Damping Circuit Reduces EMI
  • 1µA (typ) Shutdown Current
  • Low-Battery Detector (LBI/LBO)
  • 8-Pin µMAX® Package
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Details

The MAX1797 evaluation kit (EV kit) is a high-efficiency, step-up DC-DC converter for portable hand-held devices. Unlike typical boost circuits, the MAX1797 output is completely disconnected from the input in shutdown. The EV kit accepts a positive input voltage between 0.7V and VOUT and converts it to a 3.3V output for currents up to 500mA. The EV kit provides ultra-low quiescent current and high efficiency for maximum battery life.

The MAX1797 EV kit is a fully assembled and tested surface-mount printed circuit (PC) board. It can also be used to evaluate other output voltages in the 2V to 5.5V range. Additional pads on the board accommodate the external feedback resistors for setting different output voltages.

Applications

  • Cell Phones
  • Consumer Audio
  • Cordless Phones
  • Digital Cameras and Camcorders
  • End Equipment
  • Global Positioning Systems (GPS)
  • Handy Terminals
  • LCD Displays
  • Notebook Computers
  • Organizers
  • Pagers
  • Palmtop Computers
  • PDAs
  • Pen Entry Palmtops
  • Point-of-Sale Terminals
  • Portable Patient Monitoring/Drug Delivery
  • Portable Test Meters
MAX1797EVKIT
Evaluation Kit for the MAX1795, MAX1796, MAX1797

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