MAX852CSA

Overview

The MAX852CSA is a negative charge-pump switching regulator manufactured by Analog Devices Inc./Maxim Integrated. It operates within an input voltage range of 4.5V to 10V and provides a fixed -4.1V output at up to 5mA. The device features a 100kHz switching frequency, logic-level shutdown mode with maximum current consumption of 1µA over temperature, and typical output ripple of less than 1mVp-p. It is housed in an 8-pin SOIC package.

Feature Summary

• Provides regulated negative voltage suitable for GaAsFET bias applications
• Features logic-level shutdown mode for ultra-low power consumption
• Delivers low output ripple for sensitive analog circuit requirements

Applications

• GaAsFET bias supply generation
• Negative voltage rail creation for mixed-signal systems
• Portable equipment requiring efficient step-down inversion

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required thermal grade and packaging format. Request official datasheets and test reports to validate performance specifications against application requirements before integration.

Selection Notes

Select this component when a stable negative voltage rail is required for analog front-ends. Ensure the input voltage range aligns with the system's primary supply. Consider the shutdown pin functionality if power management during idle states is critical for the overall system efficiency.

Part Context

This part belongs to the MAX850–MAX853 family of low-noise, regulated negative charge-pump power supplies. These devices are designed to replace linear regulators in battery-powered applications where efficiency and size are constraints. The family offers fixed and adjustable output options to support various biasing needs.

Replacement Considerations

Public confirmed substitute part numbers: MAX850, MAX851, MAX853.