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MAX1627 - Step-Down DC-DC Controllers

General Description

The MAX1626/MAX1627 step-down DC-DC switching controllers provide high efficiency over loads ranging from 1mA to more than 2A.

A unique current-limited, pulse-frequency-modulated (PFM) control scheme operates with up to a 100% duty cycle, resulting in very low dropout voltages.

Key Features

  • o Low Dropout Voltage o 100% Maximum Duty Cycle o Soft-Start Limits Start-Up Current o Efficiency >90% (3mA to 2A Loads) o Output Power >12.5W o 90µA Max Quiescent Current o 1µA Max Shutdown Current o Up to 300kHz Switching Frequency o 16.5V Max Input Voltage o Output Voltage: 5V/3.3V (MAX1626) Adjustable (MAX1627) o Current-Limited Control Scheme _______________General.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1075; Rev 0; 6/96 NUAL KIT MA ATION SHEET A EVALU T A D WS FOLLO 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers ____________________________Features o Low Dropout Voltage o 100% Maximum Duty Cycle o Soft-Start Limits Start-Up Current o Efficiency >90% (3mA to 2A Loads) o Output Power >12.5W o 90µA Max Quiescent Current o 1µA Max Shutdown Current o Up to 300kHz Switching Frequency o 16.5V Max Input Voltage o Output Voltage: 5V/3.3V (MAX1626) Adjustable (MAX1627) o Current-Limited Control Scheme _______________General Description The MAX1626/MAX1627 step-down DC-DC switching controllers provide high efficiency over loads ranging from 1mA to more than 2A.