LTC2960HDC-4#TRMPBF

Supervisors Overview

The LTC2960HDC-4#TRMPBF is a dual-input voltage supervisor manufactured by Analog Devices Inc., designed for monitoring power rails in portable and battery-operated systems. It operates within a supply voltage range of 2.5V to 36V while consuming only 850nA of quiescent current. The device features two independent input channels configured for under-voltage and over-voltage detection, utilizing external resistive dividers to set precise thresholds with a maximum accuracy of 1.5%. It provides a fixed 200ms reset timeout period and includes an active pull-up output capable of driving logic levels up to the VCC supply voltage. Housed in a compact 2mm x 2mm DFN-8 package, it supports manual reset functionality via an MR pin.

Supervisors Feature Summary

• Dual-channel voltage supervision supporting simultaneous under-voltage and over-voltage monitoring
• Ultra-low 850nA quiescent current consumption extends battery life in portable applications
• Fixed 200ms reset timeout ensures stable system recovery from fault conditions
• Active pull-up output interface compatible with various logic families

Supervisors Applications

• Battery-powered portable electronic devices requiring multi-rail monitoring
• Automotive electronics operating within wide voltage ranges
• Microprocessor and DSP system power sequencing and supervision
• Industrial control systems needing reliable under-voltage lockout

Supervisors Procurement Notes

Verify the specific suffix HDC indicates the industrial temperature grade (-40°C to +125°C) compared to other variants like IDC or CDC. Confirm the -4 suffix denotes the specific combination of one under-voltage and one over-voltage channel with active pull-up output. Ensure the TRMPBF designation matches the required tape-and-reel packaging format for automated assembly processes.

Supervisors Selection Notes

Select this component when dual independent voltage monitoring is required without the complexity of adjustable timeouts found in other series members. The active pull-up output simplifies interfacing with microcontrollers that require defined high states. Consider the 2mm x 2mm DFN package for space-constrained PCB layouts where thermal performance and size are critical factors for long-term reliability.

Supervisors Part Context

This part belongs to the LTC2960 family of nano-power supervisors, which offers configurable inputs for diverse power management needs. Unlike the -1/-2 variants with selectable timeouts, the -3/-4 models provide fixed timing for simplified design implementation. The HDC variant specifically targets industrial environments requiring extended temperature stability, distinguishing it from commercial grade options.

Supervisors Replacement Considerations

LTC2960HDC-3#TRMPBF: Offers identical electrical characteristics but features two under-voltage monitors instead of mixed UV/OV channels.

Supervisors FAQ

What is the function of the MR pin on the LTC2960HDC-4?

The MR (Manual Reset) pin allows users to force the RST output low, initiating a system reset independently of the monitored voltage levels.

How is the threshold voltage determined for the inputs?

Thresholds are set externally using resistive voltage dividers connected to the IN+ and IN- pins, allowing customization for specific application requirements.