MAX848ESE

Overview

The MAX848ESE+ is a high-power, low-noise step-up DC/DC converter designed for 1-cell to 3-cell battery applications. It operates with an input voltage range of 700 mV to 5.5 V and provides a regulated output voltage between 2.7 V and 5.5 V, including a fixed 3.3 V option. The device delivers up to 300 mA of output current using a boost topology. Key electrical specifications include a switching frequency of 300 kHz and a load regulation of 1.6%. It functions within a temperature range of -40°C to +85°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates a power switch and control circuitry for efficient step-up conversion from single or multi-cell lithium batteries.
• Features low-noise operation suitable for RF and communication applications requiring clean power supplies.
• Includes internal compensation and soft-start functionality to simplify external component requirements.

Applications

• Powering RF transceivers and modules from single-cell lithium-ion or lithium-polymer batteries.
• Providing stable voltage rails for portable medical devices and handheld instruments.
• Supplying power to microcontrollers and sensors in battery-operated consumer electronics.

Procurement Notes

Verify the specific suffix (e.g., ESE+) against the manufacturer's official datasheet to confirm pinout, package type, and RoHS compliance status. Confirm availability through authorized distributors as supply constraints may apply. Ensure the ordering part number matches the exact thermal and electrical requirements of the target design before procurement.

Selection Notes

Select this component when a compact solution is needed to boost low-voltage lithium cells to standard logic levels. Consider the 300 mA current limit and 300 kHz switching frequency for efficiency and size trade-offs. Evaluate the need for low output noise if driving sensitive analog or RF circuits compared to higher-frequency alternatives.

Part Context

The MAX848 belongs to Maxim Integrated's family of high-efficiency step-up converters optimized for battery-powered systems. It represents a legacy product line now integrated into Analog Devices' portfolio following the acquisition. The device is commonly referenced in designs requiring reliable power management from single-cell sources without complex external feedback networks.

Replacement Considerations

Check for the MAX848ESE-T variant if tape-and-reel packaging is required instead of tube. Verify cross-reference compatibility with other 300mA boost converters from Analog Devices or third-party manufacturers, ensuring pinout and electrical parameters match exactly.