ADM1075-1ACPZ

Overview

The ADM1075-1ACPZ is a negative voltage hot swap controller designed for safe insertion and removal of boards from live backplanes. It operates within a supply voltage range of -35 V to -80 V, utilizing an internal shunt regulator for robust transient immunity. The device features constant power foldback for FET SOA protection and precision current/voltage measurement with accuracy better than 1.0%. It includes soft start inrush current limiting, fine-tunable current limits, and accurate UVH, OV, and UVL pins. Communication is handled via a PMBus/I2C interface for control, telemetry, and fault recording.

Feature Summary

• Provides precise digital current and voltage measurement for system monitoring
• Integrates constant power foldback to protect field-effect transistors
• Supports flexible powering through an internal shunt regulator

Applications

• Telecommunication and data communication equipment
• Central office switching systems
• -48 V distributed power systems
• Negative power supply control
• High availability servers

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and functional compatibility. Confirm package type matches design requirements. Check for moisture sensitivity levels and reflow soldering profiles. Ensure environmental compliance status aligns with project specifications. Validate operating temperature ranges for the intended application environment.

Selection Notes

Select this component for applications requiring negative voltage hot swap capabilities. Consider the internal shunt regulator for wide input range flexibility. Evaluate the need for PMBus/I2C telemetry for system management. Assess thermal performance given the shunt regulation characteristics. Verify that the precision measurement requirements are met by the specified accuracy levels.

Part Context

This part belongs to the ADM1075 family of hot swap controllers from Analog Devices. It is specifically tailored for negative voltage applications, contrasting with positive voltage counterparts like the ADM1273. The device integrates protection and measurement functions into a single IC, reducing component count in power distribution designs.

Replacement Considerations

Consult official substitution guides for verified alternatives. Generic replacements may lack specific features like PMBus integration or precise measurement accuracy.