ADM1175-4ARMZ-R7

Overview

The ADM1175-4ARMZ-R7 is an integrated hot swap controller and current sense amplifier designed for safe board insertion and removal from live backplanes. It supports supply voltages ranging from 3.15 V to 16.5 V and features a precision current sense amplifier with a ±3% accurate hot swap current limit level. The device includes a charge-pumped gate drive for external N-channel FETs and provides digital monitoring of current and voltage via an on-chip 12-bit analog-to-digital converter (ADC). Communication is handled through an I2C interface compliant with fast mode speeds up to 400 kHz.

Feature Summary

• Integrates a hot swap controller with a precision current sense amplifier and a 12-bit ADC for real-time digital power monitoring.
• Features adjustable analog current limiting with circuit breaker protection and automatic retry or latch-off capabilities on fault conditions.
• Supports programmable hot swap timing and offers flexible ON/ONB pin options for active high or active low control logic.

Applications

• Central office equipment
• Telecommunications and data communications systems
• PCs and servers

Procurement Notes

Verify the specific suffix 'R7' indicates reel packaging when sourcing. Confirm the '-4' designation aligns with required pinout or feature variations against official Analog Devices documentation. Ensure compatibility with I2C bus voltage levels and check for any RoHS compliance details in the latest datasheet revision before finalizing procurement plans.

Selection Notes

Select this component when precise digital power monitoring is required alongside hot swap functionality. The integrated 12-bit ADC eliminates the need for external sensing amplifiers, simplifying the design. Consider the 10-lead MSOP package constraints and ensure the external N-channel FET selection matches the charge-pumped gate drive requirements for optimal performance.

Part Context

This part belongs to the ADM1175 series of hot swap controllers manufactured by Analog Devices Inc. It is categorized under PMIC - Power Management ICs. The device is specifically engineered for applications requiring robust protection and detailed power budgeting in high-reliability environments such as telecommunications infrastructure.

Replacement Considerations

The ADM1175-2ARMZ-R7 is a related variant within the same family. Verify if the specific feature set of the '-4' suffix is necessary or if alternative models like the ADM1170 series provide sufficient functionality for the application without the integrated ADC capabilities.