MAX8574EUT+T

Overview

The MAX8574EUT+T is a high-efficiency LCD boost converter manufactured by Analog Devices Inc./Maxim Integrated. It operates within an input voltage range of 2.7V to 5.25V and provides an adjustable output voltage from 2.7V up to 28V. The device utilizes an internal n-channel switch and an internal p-channel output isolation switch, functioning as a step-up converter with a maximum switching frequency of 800kHz. It is housed in a compact SOT-23-6 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates an internal n-channel switch and an internal p-channel output isolation switch for efficient power conversion.
• Features true shutdown capability to minimize current consumption during inactive periods.
• Provides adjustable output voltage control suitable for various display biasing requirements.

Applications

• Liquid Crystal Display (LCD) bias voltage generation
• Portable electronic devices requiring efficient step-up conversion
• Battery-powered systems needing extended runtime through low quiescent current

Procurement Notes

Verify the specific suffix 'EUT+T' corresponds to the tape-and-reel packaging format and lead-free composition when ordering. Confirm that the required output voltage range aligns with the component's 28V maximum limit. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range to maintain performance reliability.

Selection Notes

Select this component when a compact solution for driving LCD panels or similar loads from a single-cell lithium battery or low-voltage source is required. The choice is driven by the need for high efficiency at light loads and the integration of both switching elements in a small footprint. Consider the 800kHz switching frequency for balancing component size against electromagnetic interference.

Part Context

This part belongs to the Maxim Integrated family of high-efficiency boost converters designed specifically for display applications. It complements other PMIC solutions by offering a dedicated, cost-effective method for generating negative or positive bias voltages needed for LCD operation without requiring external inductors of large physical size.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs before considering alternative manufacturers or pin-compatible variants.