MAX8739ETP+

Overview

The MAX8739ETP+ is a DC-DC converter IC designed for TFT and LCD displays. It integrates a high-efficiency boost regulator with two high-current operational amplifiers. The device operates on an input voltage range of 1.8V to 5.5V. It features a programmable switching frequency selectable between 600kHz and 1.2MHz. The integrated op-amps provide rail-to-rail input and output capabilities with a bandwidth of 12MHz. The component is housed in a 20-pin, 5mm x 5mm TQFN package.

Feature Summary

• Integrates a high-frequency current-mode boost regulator with an internal N-channel MOSFET for efficient power conversion.
• Includes two high-output-current operational amplifiers suitable for driving LCD backplanes and gamma correction circuits.
• Features logic-controlled high-voltage switches with adjustable delay to manage display timing requirements.
• Provides comprehensive protection mechanisms including thermal overload, undervoltage lockout, and fault latching.

Applications

• TFT-LCD monitor panels
• Laptop display modules
• Active matrix thin-film transistor liquid crystal displays

Procurement Notes

Verify the specific suffix ETP+ against the manufacturer's official datasheet to confirm pinout and RoHS compliance status. Confirm availability through authorized distributors as supply levels may vary. Ensure the selected packaging matches the required reel or tube quantity for the manufacturing process. Cross-reference the part number with the latest Analog Devices documentation to avoid obsolete revisions.

Selection Notes

Select this component when designing power systems for active matrix LCDs requiring integrated boost regulation and video signal amplification. The dual op-amp configuration simplifies board space by handling VCOM and gamma reference generation. Consider the 600kHz/1.2MHz frequency option to optimize external inductor size versus efficiency trade-offs. Ensure the input voltage range aligns with the system's primary power source constraints.

Part Context

This device belongs to the Maxim Integrated line of display driver and power management solutions. It addresses the need for compact, high-efficiency power stages in portable and desktop display applications. The integration of regulators and amplifiers reduces the bill of materials and PCB footprint compared to discrete solutions.

Replacement Considerations

Consult the official Analog Devices replacement guide for verified cross-references. Verify pin compatibility and electrical specifications before substituting with other display power ICs from the same family or competitors.