MAX849ESE+

Overview

The MAX849ESE+ is a high-power, low-noise switching voltage regulator designed for RF data link applications. It operates as a boost converter with an input voltage range of 700 mV to 5.5 V and provides a single adjustable output voltage ranging from 2.7 V to 5.5 V. The device delivers an output current of 300 mA at a fixed switching frequency of 300 kHz. It features a load regulation of 1.6% and operates within a temperature range of -40°C to +85°C. The component is housed in a 16-lead SOIC package.

Feature Summary

• Integrated boost topology optimized for low-noise RF data link power conversion
• Capable of regulating output voltage from a wide input range starting at 700 mV
• Provides regulated 300 mA output current for demanding portable applications

Applications

• RF data link transceivers
• Portable wireless communication devices
• Battery-powered systems requiring low-noise power supplies

Procurement Notes

Verify the specific suffix ESE against the manufacturer's official datasheet to confirm pinout and thermal characteristics. Confirm RoHS3 compliance status through the latest documentation. Check current availability as distribution channels may list limited stock or obsolete status. Ensure the 16-SOIC package dimensions match the target PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when designing circuits that require a compact, high-efficiency boost converter for RF sections. The 300 mA output capability supports moderate power loads while maintaining low noise performance critical for signal integrity. Consider the 300 kHz switching frequency for EMI management and external component sizing. Verify that the input source can sustain the required current draw during peak operation.

Part Context

The MAX849 belongs to the Maxim Integrated family of high-power, low-noise switching regulators. It is specifically engineered for battery-operated portable equipment where space and power efficiency are constrained. The device integrates the necessary control logic and power switches into a small surface-mount package, simplifying the design of DC-DC converters for mobile and handheld applications.

Replacement Considerations

Consult the official Analog Devices cross-reference guide for verified substitutes. Ensure any replacement maintains the 16-SOIC package and compatible electrical specifications for RF data link applications.