LTC2946HMS-1#TRPBF

Overview

The LTC2946HMS-1#TRPBF is a single-channel, rail-to-rail system monitor manufactured by Analog Devices Inc. It measures current, voltage, power, charge, and energy via an I2C interface. The device operates within a supply voltage range of 2.7V to 100V and includes an integrated shunt regulator for handling supplies exceeding 100V. It features a measurement error of 0.5% and draws 700µA of supply current. The component is housed in a 16-lead MSOP package with a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Rail-to-rail system monitoring capability for comprehensive electrical parameter tracking
• Integrated shunt regulator enables operation with high-voltage supplies above 100V
• I2C digital interface facilitates communication with host processors
• High accuracy measurement performance with low quiescent current consumption

Applications

• Bidirectional power monitoring in forward paths with energy and charge tracking
• Wide-range negative power, charge, and energy monitoring for systems down to -500V
• Power, charge, and energy monitoring in harsh environments using INTVCC shunt regulators for transient tolerance

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the H-grade designation matches required temperature and performance specifications. Ensure the I2C address configuration aligns with system bus requirements. Check for recent product change notifications regarding material or assembly updates before finalizing procurement.

Selection Notes

Select this part for applications requiring simultaneous measurement of multiple electrical parameters including charge and energy. The integrated shunt regulator makes it suitable for high-voltage inputs without external level shifting. Consider the 16-MSOP package size for space-constrained designs. Verify that the I2C speed and addressing fit the system architecture constraints.

Part Context

This component belongs to the LTC2946 family of energy monitors. The 'H' grade denotes extended temperature and performance specifications compared to standard grades. The '-1' variant typically indicates bidirectional monitoring capabilities. The '#TRPBF' suffix specifies the tape-and-reel packaging format compliant with RoHS standards.

Replacement Considerations

LTC2946HMS-1#PBF offers identical functionality in tube packaging instead of tape-and-reel.