MAX1779EUE

Overview

The MAX1779EUE is a low-power triple-output TFT LCD DC-DC converter manufactured by Analog Devices Inc./Maxim Integrated. It operates with an input supply voltage ranging from +2.7V to +5.5V and is housed in a 16-TSSOP package. The device integrates one high-power boost regulator generating up to +13V and two charge pumps providing positive and negative outputs capable of reaching ±40V. Key electrical specifications include a quiescent current of 0.5mA, shutdown current of 0.1µA, and switching frequency of 250kHz. It supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent DC-DC converters including a boost regulator and dual charge pumps for TFT LCD bias generation
• Features internal power MOSFETs and proprietary regulation algorithms to minimize output ripple and capacitor sizes
• Includes internal supply sequencing and soft-start capabilities for stable startup conditions

Applications

• Powering small active matrix thin-film transistor liquid-crystal displays
• Generating bias voltages for portable electronic display modules
• TFT LCD panel driver circuits requiring multiple regulated rails

Procurement Notes

Verify the specific suffix EUE corresponds to the TSSOP-16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the component meets the required thermal and electrical specifications for the target application environment before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring a compact solution for driving TFT LCDs with minimal external passive components. The integrated design reduces board space compared to discrete solutions. Consider the input voltage range and required output voltages to ensure compatibility with the system power architecture and display specifications.

Part Context

This part belongs to the Maxim Integrated portfolio focused on power management solutions for display technologies. It is designed to replace discrete boost and charge pump configurations, offering higher efficiency and reduced component count. The device is suitable for battery-powered devices where power conservation and physical size are critical constraints.

Replacement Considerations

Consult official substitution guides for pin-compatible alternatives within the same product family. Verify that any replacement maintains the triple-output configuration and compatible input voltage ranges.