MAX861ISA+T

Voltage Regulators - DC DC Switching Regulators Overview

The MAX861ISA+T is a frequency-selectable switched-capacitor voltage converter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 2V to 5.5V and delivers an output current of 50mA. The device utilizes a charge pump topology with selectable switching frequencies of 13kHz, 100kHz, or 250kHz to optimize efficiency based on load conditions. Packaged in an 8-SOIC surface-mount format, it supports negative or positive fixed output configurations relative to the input voltage. The component functions reliably across an industrial temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Frequency-selectable operation allows optimization for specific efficiency requirements
• Switched-capacitor architecture eliminates the need for external inductors
• Supports both negative and positive voltage conversion topologies

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring compact power solutions
• RS-232 communication interfaces needing dual polarity supplies
• Single-supply operational amplifier circuits requiring split rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix against official manufacturer documentation to confirm package type and temperature rating. Confirm availability status as distribution channels may list limited stock or end-of-life statuses. Ensure the ordering part number matches the required switching frequency configuration options provided in the datasheet specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when inductor-free power conversion is required to minimize board space. Consider the trade-off between switching frequency and external capacitor size; higher frequencies allow smaller capacitors but may increase switching losses. Verify that the 50mA output current meets the system's peak demand requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MAX860/MAX861 family of charge pump regulators designed for low-power applications. These devices provide a cost-effective alternative to inductive DC-DC converters in space-constrained designs. The ISA+ designation indicates a lead-free, RoHS-compliant variant in the SOIC-8 package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

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