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MAX1774 Datasheet Dual / High-efficiency / Step-down Converter

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-1810; Rev 2; 12/03 EVAALVUAAILTAIOBNLEKIT Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover MAX1774.

General Description

The MAX1774 is a plete power-supply solution for PDAs and other hand-held devices.

It integrates two high-efficiency step-down converters, a boost converter for backup battery regulation, and four voltage detectors in a small 32-pin QFN or 28-pin QSOP package.

The MAX1774 accepts inputs from +2.7V to +28V and provides an adjustable main output from 1.25V to 5.5V at over 2A.

Key Features

  • 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.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
MAX177 CMOS 10-Bit A/D Converter
MAX1771 Step-Up DC-DC Controller
MAX1772 Low-Cost / Multichemistry Battery-Charger Building Block
MAX1773 Power Source Selector
MAX1775 Dual-Output Step-Down DC-DC Converter
MAX1776 24V / 600mA Internal Switch / 100% Duty Cycle / Step-Down Converter
MAX1777 High-Efficiency / Quad Output / Main Power- Supply Controllers
MAX1778 Quad-Output TFT LCD DC/DC Converters
MAX1779 Low-Power Triple-Output TFT LCD DC-DC Converter
MAX170 Serial Output 5.6us 12-Bit A/D Converter

MAX1774 Distributor