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Product Detailed Parameters
- Description：IC ENERGY MONITOR I2C 16DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Input Impedance：-
- Measurement Error：0.40%
- Voltage - I/O High：-
- Voltage - I/O Low：-
- Current - Supply：900µA
- Voltage - Supply：2.7 V ~ 100 V
- Meter Type：Single Phase
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：16-WFDFN Exposed Pad
- Supplier Device Package：16-DFN (4x3)
- Grade：-
- Qualification：-
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Overview
The LTC2946IDE#PBF is a single-channel energy monitor IC from Analog Devices, housed in a 16-lead DFN package. It measures current, voltage, power, charge, and energy with an operating range of 2.7V to 100V. The device features a 10kHz I2C interface and includes a shunt regulator for supplies exceeding 100V. Key electrical specifications include a supply current of 700µA, a gain error of 0.4%, and an input offset voltage of 77µV. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Rail-to-rail system monitoring capability for comprehensive electrical parameter measurement
- Integrated shunt regulator enabling operation with power supplies above 100V
- High accuracy performance characterized by low gain error and minimal input offset voltage
Applications
- Wide range negative power, charge, and energy monitoring
- Automotive power supply supervision
- Bidirectional power monitoring systems
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS3 status. Confirm the 16-pin DFN EP package type matches the target PCB footprint. Ensure the 10kHz I2C interface speed aligns with the host controller's communication capabilities. Check for any recent PCN updates regarding material or assembly changes.
Selection Notes
Select this component when high-voltage monitoring up to 100V is required without external level shifting. The integrated shunt regulator simplifies design for supplies exceeding the limit. Consider the 16-DFN package for space-constrained applications requiring robust thermal performance and precise measurement accuracy.
Part Context
This part belongs to the LTC2946 family of rail-to-rail system monitors. It shares core functionality with variants like the LTC2946IMS#PBF but differs in package style (DFN vs MSOP) and potentially automotive qualification status. The IDE designation typically denotes specific temperature and packaging configurations within the product line.
Replacement Considerations
LTC2946HDE#PBF offers similar electrical characteristics in a DFN package. LTC2946IMS#PBF provides equivalent functionality in an MSOP package. Verify pinout compatibility and package dimensions before substituting.
