MAX1928

PRODUCTION

Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • 800mA Output Current
  • Output Voltages from 0.75V to 5V
  • 2.6V to 5.5V Input Voltage Range
  • Power-OK Output
  • No Schottky Diode Required
  • Selectable Forced PWM Operation
  • 1MHz Fixed-Frequency PWM Operation
  • 140µA Quiescent Current
  • Soft-Start
  • 10-Pin µMAX Package
    • MAX1928
    Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters
    MAX1927, MAX1928: Typical Operating Circuit
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    Documentation

    Data Sheet 1

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    Software Resources

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    Hardware Ecosystem

    Parts Product Life Cycle Description
    Switching Regulators & Controllers 5
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    MAX1821
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    Evaluation Kits

    MAX1928EVKIT

    Evaluation Kit for the MAX1927, MAX1928

    Buy Now View Details

    Features and Benefits

    • 2.6V to 5.5V Input Voltage Range
    • 1.8V Output Voltage (MAX1928EUB18)
    • Up to 800mA Output Current
    • 1MHz PWM Operation
    • 100% Duty-Cycle Operation for Low Dropout
    • No Current-Sense Resistor Needed
    • Power-OK Output
    • 93% Efficiency
    • Internal MOSFET Switch and Synchronous Rectifier
    • Soft-Start
    • Surface-Mount Components
    • Fully Assembled and Tested

    Product Details

    The MAX1927/MAX1928 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board demonstrating the MAX1927/MAX1928 pulse-width modulated (PWM) step-down converters. The EV kit comes assembled with a MAX1928EUB18, which steps down a 2.6V to 5.5V input to a 1.8V output capable of sourcing 800mA. This EV kit can also be used to evaluate the MAX1927 with minor PC board modifications.

    The MAX1927/MAX1928 optimize efficiency and battery life by skipping pulses at low loads. They feature a forced-PWM mode for low output noise and contain internal MOSFETs for minimum cost and size. A 1MHz switching frequency allows the use of small external components.

    Applications

    • Battery-Powered Equipment
    • DSP Core Power
    • PDAs and Palmtops
    • WCDMA Handsets

    MAX1927EVKIT

    Evaluation Kit for the MAX1927, MAX1928

    Buy Now View Details

    Features and Benefits

    • 2.6V to 5.5V Input Voltage Range
    • 1.8V Output Voltage (MAX1928EUB18)
    • Up to 800mA Output Current
    • 1MHz PWM Operation
    • 100% Duty-Cycle Operation for Low Dropout
    • No Current-Sense Resistor Needed
    • Power-OK Output
    • 93% Efficiency
    • Internal MOSFET Switch and Synchronous Rectifier
    • Soft-Start
    • Surface-Mount Components
    • Fully Assembled and Tested

    Product Details

    The MAX1927/MAX1928 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board demonstrating the MAX1927/MAX1928 pulse-width modulated (PWM) step-down converters. The EV kit comes assembled with a MAX1928EUB18, which steps down a 2.6V to 5.5V input to a 1.8V output capable of sourcing 800mA. This EV kit can also be used to evaluate the MAX1927 with minor PC board modifications.

    The MAX1927/MAX1928 optimize efficiency and battery life by skipping pulses at low loads. They feature a forced-PWM mode for low output noise and contain internal MOSFETs for minimum cost and size. A 1MHz switching frequency allows the use of small external components.

    Applications

    • Battery-Powered Equipment
    • DSP Core Power
    • PDAs and Palmtops
    • WCDMA Handsets
    MAX1928EVKIT
    Evaluation Kit for the MAX1927, MAX1928
    MAX1927EVKIT
    Evaluation Kit for the MAX1927, MAX1928

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