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MAX1557 - 1.2A PWM Step-Down DC-DC Converters

This page provides the datasheet information for the MAX1557, a member of the MAX1556 1.2A PWM Step-Down DC-DC Converters family.

Datasheet Summary

Features

  • Up to 97% Efficiency.
  • 95% Efficiency at 1mA Load Current.
  • Low 16µA Quiescent Current.
  • 1MHz PWM Switching.
  • Tiny 3.3µH Inductor.
  • Selectable 3.3V, 2.5V, 1.8V, 1.5V, 1.3V, 1.0V, and Adjustable Output.
  • 1.2A Guaranteed Output Current (MAX1556).
  • Voltage Positioning Optimizes Load-Transient Response.
  • Low 27µA Quiescent Current in Dropout.
  • Low 0.1µA Shutdown Current.
  • No External Schottky Diode Required.

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Datasheet preview – MAX1557

Datasheet Details

Part number MAX1557
Manufacturer Maxim Integrated Products
File Size 384.82 KB
Description 1.2A PWM Step-Down DC-DC Converters
Datasheet download datasheet MAX1557 Datasheet
Additional preview pages of the MAX1557 datasheet.

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Full PDF Text Transcription

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19-3336; Rev 0; 7/04 KIT ATION EVALU E L B AVAILA www.DataSheet4U.com 16µA IQ, 1.2A PWM Step-Down DC-DC Converters General Description Features ♦ Up to 97% Efficiency ♦ 95% Efficiency at 1mA Load Current ♦ Low 16µA Quiescent Current ♦ 1MHz PWM Switching ♦ Tiny 3.3µH Inductor ♦ Selectable 3.3V, 2.5V, 1.8V, 1.5V, 1.3V, 1.0V, and Adjustable Output ♦ 1.2A Guaranteed Output Current (MAX1556) ♦ Voltage Positioning Optimizes Load-Transient Response ♦ Low 27µA Quiescent Current in Dropout ♦ Low 0.1µA Shutdown Current ♦ No External Schottky Diode Required ♦ Analog Soft-Start with Zero Overshoot Current ♦ Small, 10-Pin, 3mm x 3mm TDFN Package MAX1556/MAX1557 The MAX1556/MAX1557 are low-operating-current (16µA), fixed-frequency step-down regulators.
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