Data Sheet Rev. 1
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Overview

Features and Benefits

  • 2.7V to 5.5V Input Voltage Range
  • 1.8V Output at 1A
  • < 1μA Quiescent Current in Shutdown Mode
  • High-Frequency Operation
    • 2.2MHz or External Clock Synchronization
  • Compact System Size
    • Full Solution with External Reference Divider Occupies Only 40mm2

Product Details

The MAX20072 evaluation kit (EV kit) demonstrates the performance and behavior of the MAX20071 and MAX20072 low-voltage step-down switching regulators.

The MAX20072 high-efficiency switching regulator family delivers up to 1A load current from 0.5V to 3.8V. The device operates from 2.7V to 5.5V, making it ideal for on-board point-of-load and post-regulation applications. Total output error is less than ±1.5% over load, line, and temperature. It features fixed-frequency PWM mode operation, with a switching frequency of 2.2MHz. The high operating frequency allows for all-ceramic capacitor design and other small-size external components.

The device provides an enable input (EN) and a power-good output (PG). The output voltage can be preset at the factory to allow customers to achieve ±1.5% output-voltage accuracy without using expensive 0.1% resistors. Alternatively, the output voltage can be set to any customer value by using two external resistors at the feedback with 0.5V internal reference. The device offers factory-programmable spread-spectrum switching and soft-start time.

The MAX20072 includes overtemperature shutdown and overcurrent limiting and is designed to continuously operate from -40°C to +125°C chip temperature.

Markets and Technologies

Applicable Parts

Getting Started

REQUIRED EQUIPMENT

  • MAX20072 EV kit
  • 5V, 1A power supply
  • Electronic load
  • Digital multimeter

PROCEDURE

The EV kit is fully assembled and tested. Follow the steps below to verify board operation:

  1. Remove the shunt on jumper JU1 and place a shunt on jumper JU2.
  2. Connect the power-supply (turned off) positive connection to VSUP and the negative connection to GND (closest connection to VSUP).
  3. Connect the electronic load (turned off) positive connection to VOUT and the negative connection to GND (closest connection to VOUT).
  4. Turn on the power supply at 5V, 1A current limit.
  5. Place the shunt on jumper JU1.
  6. Verify that the voltage across the output capacitor is 1.8V.
  7. Activate the electronic load (for either 1.8Ω resistive load or 1A current load).
  8. Verify that the voltage across the output capacitor is still 1.8V.

Documentation & Resources

  • View All (2)
  • Data Sheet (1)
  • Evaluation Design File (1)
    • Document Type