Analog Devices Inc. LTC2960ITS8-4

Overview

LTC2960ITS8-4 from Analog Devices (formerly Linear Technology) is a nano-current, high-voltage two-input voltage supervisor IC designed for battery monitoring and power sequencing in harsh environments. It features ADJ/IN– dual-threshold monitoring, 200ms fixed reset timeout, active pull-up RST/OUT outputs referenced to DVCC, 850nA quiescent current, and operation from 2.5V to 36V supply. It is used in automotive battery disconnect circuits and portable equipment brown-out protection.

For engineers reviewing the LTC2960ITS8-4 datasheet, LTC2960ITS8-4 pinout, LTC2960ITS8-4 application, or LTC2960ITS8-4 equivalent, key selection criteria include its 200ms fixed timeout, IN– input polarity for overvoltage detection, DVCC-referenced active pull-up outputs, –40°C to 85°C operating range, and TSOT-23-8 package compatibility with space-constrained designs.

Technical Context

The LTC2960ITS8-4 implements two independent comparators: one on the ADJ pin (reset threshold, 400mV typical, ±2mV matching) and one on the IN– pin (spare threshold, same reference, 5% hysteresis falling). Its internal 400mV bandgap reference enables precise external resistor-divider programming of both thresholds across temperature.

It uses an internal reset timer with fixed 200ms delay after threshold crossing or manual reset release, and supports logic-level output drive via DVCC (1.6V–5.5V), enabling direct interface with low-voltage microcontrollers without external pull-ups. VCC undervoltage lockout (1.85V–2.3V) ensures reliable output state down to 1.2V VCC.

Key Specifications

Pinout & Package

Package: 8-lead TSOT-23 (ThinSOT™), 2.9mm × 1.6mm × 0.85mm, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6375US29D3+T and TPS3808G33DBVR, the LTC2960ITS8-4 uniquely delivers dual-threshold supervision (ADJ + IN–), DVCC-referenced active pull-up outputs, and sub-1µA quiescent current - making it the only viable choice for space-constrained, battery-critical systems requiring coordinated UVLO/OVLO and low-voltage logic interfacing.

Availability

LTC2960ITS8-4 is available at Aetrix Electronics and suitable for automotive battery management, portable medical device power sequencing, and industrial sensor node brown-out detection requiring stable component supply and long-term lifecycle support.

Supply support for LTC2960ITS8-4 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 full product support, documentation, and manufacturing continuity for the LTC portfolio.

The LTC2960ITS8-4 belongs to the LTC2960 family of ultra-low-power voltage supervisors, engineered specifically for multicell battery monitoring and high-voltage industrial power sequencing where nanoscale current draw and dual-threshold flexibility are critical.

FAQ

What is the function of the DVCC pin on the LTC2960ITS8-4?

The DVCC pin on the LTC2960ITS8-4 serves as the logic supply reference for the RST and OUT outputs. When connected to a 1.6V–5.5V supply, it enables active pull-up operation-eliminating external pull-up resistors and allowing direct interfacing with low-voltage microcontrollers. Grounding DVCC reconfigures RST/OUT as open-drain outputs, retaining compatibility with higher-voltage systems. This dual-mode capability is intrinsic to the LTC2960ITS8-4 design and confirmed in its Electrical Characteristics table and Pin Functions section.

How does the LTC2960ITS8-4 differ from the LTC2960ITS8-1 in terms of reset timeout and output type?

The LTC2960ITS8-4 has a fixed 200ms reset timeout period and active pull-up RST/OUT outputs driven by DVCC. In contrast, the LTC2960ITS8-1 offers selectable 15ms/200ms timeout via the RT pin and uses 36V open-drain outputs. These differences are explicitly defined in the LTC2960 Option Table and Pin Configuration section-LTC2960ITS8-4 replaces RT with DVCC and omits timeout selection, making its timing behavior deterministic and its output drive architecture more efficient for low-voltage logic interfaces.

Can the LTC2960ITS8-4 monitor both undervoltage and overvoltage conditions simultaneously?

Yes, the LTC2960ITS8-4 can monitor both conditions simultaneously: the ADJ input provides undervoltage detection (asserting RST when monitored voltage falls below threshold), while the IN– input provides overvoltage detection (asserting OUT when monitored voltage rises above its threshold). This dual-role capability is documented in the "Voltage Monitoring" section and confirmed by the LTC2960 Option Table, which specifies LTC2960-4 as ADJ/IN– with fixed 200ms timeout and active pull-up outputs.

What is the maximum input voltage allowed on the ADJ and IN– pins of the LTC2960ITS8-4?

The absolute maximum rating for ADJ and IN– pins on the LTC2960ITS8-4 is –0.3V to +3.5V, as stated in the Absolute Maximum Ratings table. This limit applies regardless of VCC voltage. To supervise rails up to 36V, external resistor dividers must scale the input so that the voltage presented to ADJ or IN– never exceeds 3.5V-even during transients. The datasheet confirms this constraint and provides design examples (e.g., Figure 1) showing proper divider implementation for 6V–8.4V battery monitoring.

Is the LTC2960ITS8-4 pin-compatible with other variants in the LTC2960 family?

No, the LTC2960ITS8-4 is not pin-compatible with LTC2960ITS8-1 or LTC2960ITS8-2 because the RT pin (used for timeout selection in -1/-2) is replaced by DVCC in the -3/-4 variants. The TSOT-23-8 pinout differs: pins 2 and 6 are RT/DVCC and IN+/IN– respectively, and their functional assignment changes between variants. This mapping is unambiguously shown in the "Pin Configuration" diagram and "Option Table", confirming that LTC2960ITS8-4 requires unique PCB layout and cannot be substituted without hardware revision.