MAX850ESA

Overview

The MAX850ESA is a low-noise, regulated negative charge pump voltage converter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates with an input voltage range of 4.5 V to 10 V and provides an adjustable output voltage ranging from -1.28 V to -9 V. The device delivers an output current of 5 mA at a switching frequency of 100 kHz. Packaged in an 8-SOIC format, it supports surface-mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Provides regulated negative voltage conversion using a charge pump topology
• Features low-noise operation for sensitive analog circuit applications
• Includes shutdown capability for power management efficiency

Applications

• Powering operational amplifiers requiring negative supply rails
• Biasing sensors that need negative voltage references
• Providing negative bias for LCD displays or optocouplers

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status as manufacturing sources may vary. Check for obsolescence notices from Analog Devices prior to finalizing procurement plans.

Selection Notes

Select this component when a stable negative voltage is required from a positive single supply. Ensure the load current does not exceed 5 mA. Verify that the input voltage remains within the 4.5 V to 10 V window for proper regulation.

Part Context

This part belongs to the Maxim Integrated line of PMICs focused on portable and battery-powered systems. It serves as a compact solution for generating negative rails without requiring inductors, fitting into space-constrained designs utilizing standard SOIC packages.

Replacement Considerations

Consult official Analog Devices documentation for direct pin-compatible substitutes. Cross-reference specifications such as output current and noise performance before adopting alternative charge pump regulators.