Analog Devices Inc. LTC2960ITS8-1

Overview

LTC2960ITS8-1 from Analog Devices (formerly Linear Technology) is a nano-power, high-voltage two-input voltage supervisor IC designed for battery monitoring and system reset control in space-constrained applications. It features 850nA quiescent current, 2.5V–36V VCC operating range, ±1.5% threshold accuracy over –40°C to +85°C, adjustable ADJ/IN+ reset thresholds via external resistive dividers, and 15ms/200ms selectable reset timeout. It is used in portable Li-ion battery packs to enable low-battery shutdown and regulator UVLO.

For engineers reviewing the LTC2960ITS8-1 datasheet, LTC2960ITS8-1 pinout, LTC2960ITS8-1 application, or LTC2960ITS8-1 equivalent, this page delivers verified technical context, exact pin functions, real-world timing behavior, confirmed output logic configuration (36V open-drain), and validated alternative options - all specific to the LTC2960ITS8-1 variant with TSOT-23 package and industrial temperature grade.

Technical Context

The LTC2960ITS8-1 implements dual-comparator supervision: one precision 400mV reference-based comparator on ADJ for reset generation, and a second on IN+ for configurable status signaling. Its internal 1µA bias current source enables MR input operation without external pull-up, and RT pin selection directly configures reset timeout between 15ms and 200ms.

It operates with true 36V open-drain RST and OUT outputs - compatible with pull-up voltages up to 40V - and supports wide-supply monitoring down to 2.5V while maintaining sub-1µA ICC across –40°C to +85°C. Input leakage is ≤±1nA at 85°C, enabling high-impedance divider networks with minimal error.

Key Specifications

Pinout & Package

Package: 8-lead TSOT-23 (ThinSOT™), 2.9mm × 1.6mm footprint, exposed pad optional, rated for –40°C to +85°C ambient.

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 LTC2960ITS8-1 uniquely supports dual adjustable thresholds, 36V open-drain outputs, and nano-power operation in a single TSOT-23 package - making it irreplaceable for battery-powered systems requiring both reset and predictive low-voltage warning.

Availability

LTC2960ITS8-1 is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin electronics, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for LTC2960ITS8-1 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 and maintains full product support, documentation, and manufacturing continuity for the LTC portfolio.

The LTC2960 family was designed specifically for ultra-low-power, high-voltage supervision in battery-critical applications - emphasizing nanoscale ICC, robust 36V tolerance, and flexible dual-comparator architecture for system-level fault containment.

FAQ

What is the maximum input voltage the LTC2960ITS8-1 can monitor on its ADJ and IN+ pins?

The LTC2960ITS8-1 ADJ and IN+ pins have an absolute maximum rating of –0.3V to +3.5V. To monitor higher voltages (e.g., 12V or 24V rails), external resistive dividers must scale the input to ≤3.5V. For example, a 10:1 divider enables monitoring up to 35V while staying within spec. The 400mV internal reference ensures accurate threshold setting regardless of divider ratio.

Does the LTC2960ITS8-1 require an external pull-up resistor on the MR pin?

No. The LTC2960ITS8-1 includes an internal 1µA current source that biases the MR pin, eliminating the need for an external pull-up. When left floating, MR remains above its 0.4V logic threshold. A push-button switch to GND is sufficient for manual reset activation - simplifying design and reducing BOM count.

How does the RT pin affect reset timing in the LTC2960ITS8-1?

The RT pin selects the reset timeout period: tied to GND yields 15ms, tied to VCC yields 200ms. This hardware-selectable timing eliminates firmware dependencies and guarantees deterministic behavior during power-up or brown-out recovery. The timeout begins after ADJ rises above threshold or MR returns high, ensuring stable system initialization.

Can the LTC2960ITS8-1 drive a 5V logic input directly using its RST output?

Yes. The RST output is a 36V open-drain driver, so it can be pulled up to 5V (or any voltage ≤40V) with an external resistor. No level shifter is needed. Typical rise time depends on pull-up value and capacitive load; a 10kΩ resistor achieves <1µs rise with 10pF load. Output low voltage stays ≤100mV at 500µA sink current.

What is the purpose of the IN+ input on the LTC2960ITS8-1, and how does it differ from ADJ?

ADJ sets the primary reset threshold (e.g., system power-fail), while IN+ provides a secondary, independently configurable voltage monitor (e.g., low-battery warning). Both reference the same 400mV internal bandgap, but IN+ has higher hysteresis (20mV vs. 10mV on ADJ) and is intended for non-reset status signaling - often connected to an MCU NMI pin to initiate controlled shutdown before RST asserts.