MAX1540ETJ+T

DC DC Switching Controllers Overview

The MAX1540ETJ+T is a dual-step-down switching controller IC manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 5.5V to 28V and supports output voltages from 700mV to 5.5V, including specific settings of 1.2V, 1.5V, 1.8V, and 2.5V. The device features a switching frequency between 170kHz and 620kHz with up to 100% duty cycle capability. It provides two outputs with a maximum current of 5A per channel. Packaged in a 32-TQFN (5x5mm) with exposed pad, it functions within an operating temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck control architecture
• Integrated current limit and power good monitoring
• Supports pulse skipping mode for efficiency optimization

DC DC Switching Controllers Applications

• Portable electronics power management
• Industrial equipment DC-DC conversion
• Embedded system core voltage regulation

DC DC Switching Controllers Procurement Notes

Verify component status as the MAX1540ETJ+T is listed as obsolete or discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market sources. Ensure compatibility with existing PCB layouts due to the 32-TQFN package dimensions. Check for RoHS compliance documentation if required for specific regulatory standards. Validate lead times carefully given the end-of-life status.

DC DC Switching Controllers Selection Notes

Select this component when dual independent step-down channels are required from a single high-voltage input source. The wide input voltage range suits applications with varying supply conditions. Consider the thermal performance of the exposed pad TQFN package for heat dissipation requirements. Verify that the 170kHz to 620kHz frequency range meets EMI constraints for the target application.

DC DC Switching Controllers Part Context

This part belongs to the Maxim Integrated line of power management ICs, now under Analog Devices. It is designed for efficient voltage regulation in space-constrained environments. The 32-TQFN package allows for compact board designs while maintaining robust electrical performance for dual-output applications.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct pin-to-pin replacements should be verified against official Analog Devices cross-reference lists or engineering change notices.