Analog Devices Inc. LTC2960IDC-1

Overview

LTC2960IDC-1 from Analog Devices (formerly Linear Technology) is a nano-power, high-voltage two-input voltage supervisor IC designed for multicell battery monitoring and system-level power supervision. It features 850nA quiescent current, 2.5V–36V supply range, ±1.5% threshold accuracy over –40°C to 85°C, adjustable ADJ/IN+ reset thresholds via external resistive dividers, and 36V open-drain RST/OUT outputs - enabling reliable brown-out detection in portable medical devices.

For engineers reviewing the LTC2960IDC-1 datasheet, LTC2960IDC-1 pinout, LTC2960IDC-1 application, or LTC2960IDC-1 equivalent, key selection criteria include its 15ms/200ms selectable reset timeout, manual reset (MR) input with 20µs minimum pulse width, dual-comparator architecture (ADJ + IN+), and compatibility with high-side sensing up to 36V without level-shifting.

Technical Context

The LTC2960IDC-1 implements a precision 400mV internal reference with comparator-based threshold detection on both ADJ and IN+ inputs. Its reset logic includes built-in 2.5% hysteresis on ADJ and 5% hysteresis on IN+, plus a programmable timeout period (15ms or 200ms via RT pin) that prevents output chatter during supply transients.

It operates as a dual-threshold supervisor: ADJ monitors falling voltage for system reset initiation, while IN+ detects rising voltage for controlled shutdown signaling (e.g., NMI assertion). The 36V-tolerant open-drain outputs support pull-up to any voltage ≤40V, decoupling logic-level interfacing from high-voltage rail monitoring.

Key Specifications

Pinout & Package

Package: 8-lead (2mm × 2mm) plastic DFN, exposed pad (optional GND connection), –40°C to 85°C operating range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326US29D3+T and TPS3808G12DBVR, the LTC2960IDC-1 uniquely delivers nano-power dual-threshold supervision with 36V-tolerant open-drain outputs - essential for battery-stack monitoring and high-voltage industrial interfaces where flexibility and ultra-low ICC are mandatory.

Availability

LTC2960IDC-1 is available at Aetrix Electronics and suitable for portable medical devices, battery-powered security systems, automotive telematics units, and industrial data loggers requiring stable component supply with guaranteed long-term availability.

Supply support for LTC2960IDC-1 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) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC2960 product line was designed specifically for ultra-low-power, high-voltage system supervision in battery-critical applications - emphasizing precision threshold control, dual-comparator flexibility, and robust operation across extended temperature ranges.

FAQ

What is the maximum input voltage the LTC2960IDC-1 can monitor on its ADJ and IN+ pins?

The LTC2960IDC-1 ADJ and IN+ pins have an absolute maximum rating of –0.3V to 3.5V. To monitor higher voltages (e.g., 24V or 36V rails), external resistive dividers must scale the input down to ≤3.5V while maintaining the 400mV threshold reference. For example, a 60:1 divider enables monitoring of up to 210V with proper resistor selection and leakage compensation.

How does the RT pin affect reset timing in the LTC2960IDC-1?

The RT pin on the LTC2960IDC-1 selects between two factory-trimmed reset timeout periods: tying RT to GND configures a 15ms delay, while tying RT to VCC selects 200ms. This timeout begins after the ADJ input rises above threshold + hysteresis and determines how long RST remains low before releasing - critical for ensuring stable power rail recovery before MCU initialization.

Can the LTC2960IDC-1 be used with a 1.8V logic supply for its RST and OUT outputs?

Yes - the LTC2960IDC-1 uses 36V open-drain outputs, so RST and OUT can be pulled up to any voltage ≤40V, including 1.8V. A pull-up resistor (e.g., 10kΩ) from RST/OUT to the 1.8V rail ensures compatible logic levels for modern low-voltage MCUs while preserving full 36V input monitoring capability on ADJ/IN+.

What is the purpose of the MR (Manual Reset) input on the LTC2960IDC-1?

The MR input on the LTC2960IDC-1 provides external reset forcing: pulling MR low immediately drives RST low regardless of ADJ voltage, and RST remains low for the full selected timeout period (15ms or 200ms) after MR returns high. This enables push-button recovery, watchdog-triggered resets, or firmware-initiated safe shutdown sequences in systems using the LTC2960IDC-1.

Does the LTC2960IDC-1 support hysteresis on both ADJ and IN+ inputs?

Yes - the LTC2960IDC-1 provides 2.5% hysteresis on the ADJ input (≈10mV at 400mV threshold) and 5% hysteresis on the IN+ input (≈20mV), preventing output oscillation during slow-moving or noisy supply transitions. These values are factory-trimmed and specified over –40°C to 85°C, eliminating need for external hysteresis components in most designs.