MAX1774

PRODUCTION

Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover

Dual-Output Step-Down DC-DC Converter Supplies PDA/Palmtop Computers with Automatic Battery Switchover

Data Sheet (Rev. 2) Product Selection Table
Part Models
2
1ku List Price
Starting From $4.79
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Part Details

  • Dual, High-Efficiency, Synchronous-Rectified Step-Down Converters
  • Thin, Small (1mm High) QFN Package
  • Step-Up Converter for Backup Battery
  • Main Power
    • Adjustable from +1.25V to +5.5V
    • Over 2A Load Current
    • Up to 95% Efficiency
  • Core Power
    • Adjustable from 1V to 5V
    • Internal Switches
    • Up to 1.5A Load Current
    • Up to 91% Efficiency
  • Automatic Main Battery Switchover
  • 100% (max) Duty Cycle
  • Up to 1.25MHz Switching Frequency
  • Input Voltage Range from +2.7V to +28V
  • Four Low-Voltage Detectors
  • 170µA Quiescent Current
  • 8µA Shutdown Current
  • Digital Soft-Start
  • Independent Shutdown Inputs
MAX1774
Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover
MAX1774: Functional Diagram
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Documentation

Data Sheet 1

Design Note 1

Technical Articles 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Micropower Buck Regulators 1
MAX1775
PRODUCTION Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers
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