Analog Devices Inc. LTC2960HDC-3

Overview

LTC2960HDC-3 from Analog Devices (formerly Linear Technology) is a nano-power, high-voltage dual-comparator voltage supervisor with ADJ/IN+ input configuration, fixed 200ms reset timeout, and active pull-up RST/OUT outputs referenced to DVCC. It operates from 2.5V to 36V supply, draws only 850nA typical quiescent current, and delivers ±1.5% threshold accuracy over –40°C to 125°C - ideal for battery-backed automotive and industrial power monitoring.

For engineers reviewing the LTC2960HDC-3 datasheet, LTC2960HDC-3 pinout, LTC2960HDC-3 application, or LTC2960HDC-3 equivalent, key selection criteria include its 200ms fixed reset timeout, DVCC-referenced push-pull outputs, IN+ comparator polarity, and H-grade temperature rating - all critical for robust brown-out detection in high-reliability embedded systems.

Technical Context

The LTC2960HDC-3 integrates two independent comparators: one monitors the ADJ input against a precise 400mV internal reference to generate RST, while the second monitors IN+ with identical 400mV threshold and 20mV hysteresis to drive OUT. Its supervisory logic includes built-in 2.5% RST hysteresis and a fixed 200ms timeout after threshold recovery, eliminating external timing components.

Unlike LTC2960-1/-2 variants, the LTC2960HDC-3 replaces the RT pin with DVCC to enable logic-level programmable output swing (1.6V–5.5V), supporting direct interface with low-voltage microcontrollers without external pull-ups. Its DFN package features an exposed thermal pad and supports operation down to VCC = 1.2V with guaranteed low-state outputs.

Key Specifications

Pinout & Package

Package: 8-lead (2mm × 2mm) plastic DFN with exposed thermal pad (pin 9), RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2960HDC-1#TRPBF and MAX6326HUT+T, the LTC2960HDC-3 uniquely combines H-grade temperature support, DVCC-referenced push-pull outputs, and dual adjustable thresholds - making it the only option that satisfies simultaneous requirements for automotive thermal resilience, low-power logic interfacing, and multifunction voltage supervision.

Availability

LTC2960HDC-3 is available at Aetrix Electronics and suitable for automotive power management, industrial battery backup, and security sensor node designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2960HDC-3 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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, acquired Linear Technology in 2017 to strengthen its precision power and signal conditioning portfolio.

The LTC2960 product line was designed specifically for ultra-low-power, high-voltage system supervision in battery-critical applications - delivering nanoscale current consumption without sacrificing accuracy, speed, or ruggedness across automotive and industrial environments.

FAQ

What is the maximum input voltage the ADJ and IN+ pins of the LTC2960HDC-3 can tolerate?

The ADJ and IN+ pins of the LTC2960HDC-3 have an absolute maximum rating of –0.3V to 3.5V. This means they must never be exposed to voltages exceeding 3.5V - even briefly - regardless of the VCC level. External resistive dividers are mandatory when monitoring rails above 3.5V, such as 12V, 24V, or 36V supplies. The LTC2960HDC-3 datasheet specifies that VIN must remain ≤ 8.75× the lowest programmed threshold to stay within this limit.

Does the LTC2960HDC-3 support manual reset functionality, and how is it implemented?

Yes, the LTC2960HDC-3 includes a dedicated MR (Manual Reset) input. Pulling MR low forces the RST output low immediately, and RST remains low for the full 200ms reset timeout period after MR returns high. The MR pin has an internal 1µA pull-up current source, enabling direct connection to a push-button switch (to GND) without external biasing. The LTC2960HDC-3 also specifies a minimum detectable MR pulse width of 20µs.

How does the DVCC pin affect the behavior of RST and OUT on the LTC2960HDC-3?

On the LTC2960HDC-3, the DVCC pin sets the logic-high voltage level for both RST and OUT outputs. When DVCC is connected to a 1.6V–5.5V supply, RST and OUT actively drive high to DVCC - eliminating the need for external pull-up resistors. If DVCC is grounded, both outputs revert to open-drain mode and require external pull-ups. This dual-mode capability makes the LTC2960HDC-3 adaptable to diverse logic families without redesigning the output stage.

What is the guaranteed operating temperature range for the LTC2960HDC-3, and how is it marked?

The LTC2960HDC-3 is specified for continuous operation from –40°C to +125°C ambient temperature - denoted by the "H" suffix in the part number. This H-grade qualification is verified per industry-standard thermal stress testing and is explicitly confirmed in the Order Information table, which lists "–40°C to 125°C" under Temperature Range for all LTC2960HDC-x variants. The device uses a DFN package with exposed pad for enhanced thermal dissipation at elevated temperatures.

Can the LTC2960HDC-3 monitor two different supply rails simultaneously, and how is this achieved?

Yes, the LTC2960HDC-3 can monitor two independent supply rails simultaneously using its dual-comparator architecture: the ADJ input supervises the primary rail (e.g., battery voltage), while the IN+ input supervises a secondary rail (e.g., 3.3V logic supply). Each input uses its own resistor divider network, and thresholds are independently configurable. The resulting RST and OUT signals provide asynchronous status for each rail - enabling coordinated power sequencing or fault isolation in complex embedded systems.