Analog Devices Inc. LTC2960HDC-2

Overview

LTC2960HDC-2 from Analog Devices (formerly Linear Technology) is a nano-power, high-voltage two-input voltage supervisor IC designed for multicell battery monitoring and regulator UVLO in harsh environments. It features 850nA quiescent current, 36V VCC operation, adjustable ADJ/IN– reset thresholds, 200ms fixed reset timeout, and open-drain RST/OUT outputs rated to 36V. It is used in automotive battery disconnect circuits where precise undervoltage detection prevents deep discharge.

For engineers reviewing the LTC2960HDC-2 datasheet, LTC2960HDC-2 pinout, LTC2960HDC-2 application, or LTC2960HDC-2 equivalent, key selection criteria include its –40°C to 125°C operating range, IN– input configuration for overvoltage/undervoltage dual detection, 1.5% threshold accuracy over temperature, and compatibility with 36V open-drain logic interfacing without external level shifting.

Technical Context

The LTC2960HDC-2 implements two independent comparators: one monitors the ADJ input for reset generation with 2.5% hysteresis and 200ms timeout, while the second uses the IN– input to detect rising voltage conditions - enabling overvoltage lockout or power-fail warning. Its internal 400mV reference and precision threshold matching (±2mV) ensure stable triggering across temperature.

It operates from 2.5V to 36V on VCC and supports manual reset (MR) with 20µs minimum pulse width and 1µA internal pull-up. The RT pin is omitted; this variant fixes the reset timeout at 200ms and configures both RST and OUT as 36V open-drain outputs - eliminating need for DVCC supply or external pull-ups beyond system-level logic voltage requirements.

Key Specifications

Pinout & Package

Package: 8-lead (2mm × 2mm) plastic DFN (DC8), exposed pad (optional GND connection), moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326–29D2 and TLV809E, the LTC2960HDC-2 uniquely delivers field-programmable dual thresholds, 36V tolerant outputs, and automotive temperature range in a single 2mm×2mm DFN - making it irreplaceable for battery management and industrial power sequencing where flexibility and ruggedness are required.

Availability

LTC2960HDC-2 is available at Aetrix Electronics and suitable for automotive battery management, industrial backup power systems, and portable medical equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2960HDC-2 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 system supervision in battery-powered and automotive applications - emphasizing nano-current operation, wide input range, and robust noise immunity.

FAQ

What is the function of the IN– input on the LTC2960HDC-2?

The IN– input on the LTC2960HDC-2 is an inverting comparator that triggers the OUT output when the monitored voltage rises above the programmed threshold. Unlike the ADJ input (which detects falling voltage for reset), IN– enables overvoltage detection, power-good signaling, or controlled startup sequencing - critical in applications like automotive battery reconnect or DC/DC enable control. This functionality is confirmed in the LTC2960 option table and pin description for LTC2960-2/LTC2960-4 variants, and LTC2960HDC-2 is explicitly designated as an -2 variant.

Does the LTC2960HDC-2 support adjustable reset timeout periods?

No, the LTC2960HDC-2 has a fixed 200ms reset timeout period. The RT pin - used to select between 15ms and 200ms in LTC2960-1/-2 variants - is not implemented in this part; instead, the datasheet specifies that LTC2960-2 variants with "H" grade (e.g., LTC2960HDC-2) use the fixed 200ms timeout. This is verified in the Option Table and Electrical Characteristics section where tRST is listed as 140ms to 280ms for LTC2960-3/4, and consistent 200ms behavior is confirmed in timing diagrams and application circuits for -2 parts.

Can the RST and OUT outputs of the LTC2960HDC-2 drive a 5V logic input directly?

Yes, the RST and OUT outputs of the LTC2960HDC-2 are 36V open-drain and can interface directly with 5V logic inputs using an external pull-up resistor to 5V. The outputs safely sink current when low and float when high, allowing clean level translation without additional buffers. This is explicitly supported in the Applications Information section, which states open-drain outputs "allow the outputs to be pulled up to a user defined voltage up to 36V with a resistor," and Figure 3 demonstrates 5V pull-up operation.

What is the maximum input voltage allowed on the ADJ, IN–, and MR pins of the LTC2960HDC-2?

The absolute maximum rating for ADJ, IN–, and MR pins on the LTC2960HDC-2 is –0.3V to 3.5V. Exceeding 3.5V risks permanent damage. This is strictly enforced because these pins connect to internal ESD structures and reference circuitry - not high-voltage tolerant inputs. To monitor higher voltages (e.g., 24V battery), a resistive divider must scale the signal to ≤3.5V at the pin, as shown in Figures 1 and 2 of the datasheet.

Is the LTC2960HDC-2 pin-compatible with other LTC2960 variants in the same package?

No, the LTC2960HDC-2 is not pin-compatible with LTC2960-1 or LTC2960-3/4 variants. While all share the 8-lead DFN package, Pin 8 is NC (no connect) in LTC2960HDC-2 but serves as RT (timeout select) in -1 variants or DVCC (logic supply) in -3/-4 variants. Swapping parts without board revision will result in undefined behavior - e.g., floating RT or missing DVCC bias - as confirmed in the Pin Configuration and Pin Functions sections.