MAX857ESA

Overview

The MAX857ESA is a step-up DC-DC converter manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC package. It operates with an input voltage range of 800 mV to 6 V and provides a single adjustable output ranging from 2.7 V to 6 V. The device delivers an output current of 150 mA at a fixed switching frequency of 500 kHz. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Boost topology for efficient voltage step-up conversion
• Adjustable output voltage capability
• Wide input voltage operating range

Applications

• Portable battery-powered equipment
• Handheld instruments
• Personal electronics

Procurement Notes

Verify the specific suffix (e.g., +T) for tape-and-reel packaging requirements against your assembly needs. Confirm RoHS compliance status through official manufacturer documentation. Ensure the SOIC-8 footprint matches your PCB layout constraints. Check for any recent product change notices or lifecycle status updates directly from Analog Devices.

Selection Notes

Select this component when a low input voltage must be boosted to a higher regulated level. Consider the 150 mA output current limit for load requirements. Evaluate the 500 kHz switching frequency for EMI and inductor size trade-offs. Verify that the 800 mV minimum input voltage aligns with your source power supply characteristics.

Part Context

This part belongs to the MAX857 series of switch-mode power supplies. It is categorized under PMIC - Power Management ICs as a Voltage Converter. The device is designed for space-constrained applications requiring high efficiency in a small surface-mount package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.