Analog Devices Inc. LTC2960CDC-3#TRMPBF

Overview

LTC2960CDC-3#TRMPBF from Analog Devices (formerly Linear Technology) is a nano-power, high-voltage dual-comparator supervisor IC designed for battery voltage monitoring and system reset control in multicell Li-ion and automotive applications. It features 850nA quiescent current, 2.5V–36V VCC operating range, 200ms fixed reset timeout, ADJ/IN+ input configuration, and active pull-up RST/OUT outputs referenced to DVCC. It is used to generate precise power-fail and low-battery signals in portable medical devices.

For engineers reviewing the LTC2960CDC-3#TRMPBF datasheet, LTC2960CDC-3#TRMPBF pinout, LTC2960CDC-3#TRMPBF application, or LTC2960CDC-3#TRMPBF equivalent, key selection criteria include its 200ms fixed reset timeout, DVCC-referenced active pull-up outputs, ±2mV ADJ/IN+ threshold matching, –40°C to 125°C extended temperature variants, and compatibility with 1.6V–5.5V logic supplies.

Technical Context

The LTC2960CDC-3#TRMPBF integrates two independent comparators: one monitors the ADJ input for reset generation with 2.5% hysteresis and 200ms timeout, while the second monitors IN+ for configurable voltage status detection with 5% hysteresis. Its internal 400mV reference enables precise threshold setting via external resistive dividers.

Unlike LTC2960-1/-2 variants, it replaces the RT pin with DVCC to support logic-level programmable output swing (1.6V–5.5V), eliminating external pull-up resistors and reducing static power. It operates down to VCC = 1.2V with guaranteed low-state outputs and supports manual reset activation via MR input with 20µs minimum pulse width.

Key Specifications

Pinout & Package

Package: 8-lead (2mm × 2mm) plastic DFN with exposed pad (DC8); RoHS-compliant, lead-free finish; 0°C to 70°C operating temperature range.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with MAX6326US29D3+T and TPS3808G33DBVR, the LTC2960CDC-3#TRMPBF uniquely delivers adjustable dual thresholds, nano-power operation, and DVCC-referenced active outputs-enabling compact, long-life, multi-rail supervision without external components.

Availability

LTC2960CDC-3#TRMPBF is available at Aetrix Electronics and suitable for portable medical monitors, automotive battery management systems, security system sensors, and industrial IoT gateways requiring stable component supply with full traceability and lifecycle support.

Supply support for LTC2960CDC-3#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices acquired Linear Technology in 2017 and maintains its precision analog portfolio, emphasizing high-performance, low-power, and high-reliability ICs for demanding industrial and automotive applications.

The LTC2960 family was designed specifically for ultra-low-power voltage supervision in battery-critical systems, enabling accurate, dual-threshold monitoring with minimal impact on runtime-targeting portable, automotive, and energy-harvesting applications.

FAQ

What is the function of the DVCC pin on the LTC2960CDC-3#TRMPBF?

The DVCC pin on the LTC2960CDC-3#TRMPBF sets the logic-high voltage level for the RST and OUT outputs, supporting 1.6V–5.5V supplies. When DVCC is tied to a valid logic rail, RST and OUT drive actively to DVCC (not open-drain), eliminating external pull-up resistors and reducing static power. Grounding DVCC reverts outputs to open-drain mode. This flexibility enables direct interfacing with diverse microcontrollers without level-shifting circuitry.

Does the LTC2960CDC-3#TRMPBF support adjustable reset thresholds?

Yes, the LTC2960CDC-3#TRMPBF supports fully adjustable reset thresholds via the ADJ input. An external resistive divider scales the monitored voltage to match the internal 400mV reference. For example, a 6.0V reset threshold is achieved with a divider ratio of 15:1 (6.0V ÷ 0.4V). The datasheet provides design equations and examples for single- and dual-voltage configurations, ensuring accuracy within ±1.5% over temperature.

How does the 200ms reset timeout work in the LTC2960CDC-3#TRMPBF?

The LTC2960CDC-3#TRMPBF features a fixed 200ms reset timeout period that begins when the ADJ input rises above its threshold (plus 2.5% hysteresis) or when the MR input transitions from low to high. During this period, RST remains low regardless of further input changes. After 200ms, RST releases to its high state (DVCC-referenced) if the ADJ input remains valid. This ensures stable reset assertion during supply recovery transients.

Can the LTC2960CDC-3#TRMPBF monitor two different voltages simultaneously?

Yes, the LTC2960CDC-3#TRMPBF can monitor two distinct voltages: ADJ for primary reset and IN+ for secondary status (e.g., low-battery warning). Each input uses its own resistive divider network. Application Note 2960 provides detailed schematics for single- and dual-voltage configurations, including resistor calculations to achieve precise thresholds such as 6.4V on IN+ and 6.0V on ADJ with matched hysteresis.

What is the maximum input voltage allowed on the ADJ, IN+, and IN– pins of the LTC2960CDC-3#TRMPBF?

The absolute maximum rating for ADJ, IN+, and IN– pins on the LTC2960CDC-3#TRMPBF is –0.3V to 3.5V. This limit applies regardless of VCC level. To avoid damage when monitoring high-voltage rails (e.g., 24V), external resistive dividers must scale the input so the voltage at ADJ/IN+ never exceeds 3.5V. For instance, monitoring a 36V rail requires a minimum divider ratio of 10.3:1 (36V ÷ 3.5V) to stay within specification.