MAX635BCSA+T

Voltage Regulators - DC DC Switching Regulators Overview

The MAX635BCSA+T is a negative inverting CMOS regulating voltage switching regulator manufactured by Analog Devices Inc./Maxim Integrated. It functions as a buck switching regulator IC, providing a negative adjustable or fixed output voltage of -1.31V to -5V. The device delivers an output current of 500mA and is housed in an 8-SOIC package with a width of 0.154 inches (3.90mm). It operates as a single-output converter designed for applications requiring efficient negative voltage generation from positive supply rails.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Inverts positive input voltage to generate a stable negative output
• Supports adjustable or fixed negative voltage regulation modes
• Delivers up to 500mA output current capability
• Utilizes compact 8-SOIC surface-mount packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Circuitry requiring negative power supplies from positive sources
• Op-amp biasing in single-supply systems
• Interface circuits needing dual polarity voltages
• Portable electronics with limited space for magnetic components

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix and tape/reel configuration when ordering, as the +T designation indicates tape and reel packaging. Confirm the specific voltage variant (adjustable vs. fixed -5V) required for your design, as performance characteristics may vary between sub-models within the MAX635 family. Ensure compatibility with the 8-SOIC footprint on your PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for generating negative voltage from a positive rail is needed without using inductors if alternative topologies are considered, though this part uses switching regulation. Evaluate the 500mA current limit against peak load requirements. Consider the thermal performance within the SOIC package for high-duty cycle operations.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MAX635 series of inverting switching regulators. It is distinct from linear inverters due to its higher efficiency at moderate loads. The BC grade typically denotes specific temperature and accuracy ranges compared to other grades like BE or AE. It serves as a direct replacement for older discrete inverting solutions in space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for MAX635 variants with different output voltage fixes or current ratings. Verify pinout compatibility with existing layouts. Ensure the replacement supports the same input voltage range and switching frequency characteristics to maintain filter component values.