Analog Devices Inc. LTC2960CTS8-1#TRMPBF

Overview

LTC2960CTS8-1#TRMPBF from Analog Devices (formerly Linear Technology) is a nano-current, high-voltage two-input voltage supervisor IC designed for multicell battery monitoring and regulator UVLO in space-constrained systems. It features 850nA quiescent current, 2.5V–36V VCC operating range, ±1.5% threshold accuracy over –40°C to 125°C, and dual comparator architecture with ADJ/IN+ inputs. It is used in portable Li-ion battery packs to trigger controlled shutdown before deep discharge.

For engineers reviewing the LTC2960CTS8-1#TRMPBF datasheet, LTC2960CTS8-1#TRMPBF pinout, LTC2960CTS8-1#TRMPBF application, or LTC2960CTS8-1#TRMPBF equivalent, key selection criteria include its 15ms/200ms selectable reset timeout, 36V open-drain RST/OUT outputs, TSOT-23-8 package, manual reset input, and adjustable 400mV internal reference with external resistive divider configuration.

Technical Context

The LTC2960CTS8-1#TRMPBF implements two independent comparators: one monitors the ADJ input against a 400mV internal reference to generate RST (with 2.5% hysteresis and programmable timeout), while the second monitors IN+ against the same reference to drive the OUT signal (with 5% hysteresis). Its RT pin selects between 15ms and 200ms reset timeout periods.

It operates across 2.5V–36V VCC and supports logic-level interfacing via 36V-tolerant open-drain outputs. Input leakage is ≤±1nA at 125°C, enabling high-impedance resistor dividers for precise threshold setting without significant error. The device guarantees output low state down to VCC = 1.2V.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic TSOT-23 (0.65mm pitch, 2.9mm × 1.6mm footprint), RoHS-compliant, lead-free finish.

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 LTC2960CTS8-1#TRMPBF uniquely delivers dual adjustable thresholds, hardware-selectable timeout, and 36V open-drain outputs in an 8-pin TSOT-23 - enabling compact, high-voltage, multi-rail supervision without external components.

Availability

LTC2960CTS8-1#TRMPBF is available at Aetrix Electronics and suitable for portable equipment, battery-powered instrumentation, and security systems requiring stable component supply with guaranteed long-term availability.

Supply support for LTC2960CTS8-1#TRMPBF 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, datasheets, and application engineering for the LTC portfolio.

The LTC2960 family was designed specifically for ultra-low-power, high-voltage battery and regulator supervision in space-constrained portable and automotive systems - emphasizing nano-current operation, precision thresholding, and robust output drive.

FAQ

What is the maximum input voltage the LTC2960CTS8-1#TRMPBF can monitor using external resistive dividers?

The LTC2960CTS8-1#TRMPBF ADJ and IN+ inputs have an absolute maximum rating of 3.5V. To avoid damage, the monitored voltage must be scaled via resistive divider so that the voltage at ADJ or IN+ never exceeds 3.5V. For example, with a 10:1 divider, the maximum measurable input is 35V - well within the 36V VCC limit. Always verify divider current ≥100× input leakage (≥0.2µA) for <1% error.

Does the LTC2960CTS8-1#TRMPBF require decoupling capacitors, and where should they be placed?

Yes, the LTC2960CTS8-1#TRMPBF requires a 0.1µF ceramic capacitor between VCC and GND, placed as close as possible to the pins. This stabilizes the internal reference and prevents false resets due to supply noise. No capacitor is required on MR or RT, but if long traces are used, a 100pF cap to GND may reduce ESD susceptibility. DVCC is not present in the -1 variant, so no DVCC bypass is needed.

How does the manual reset (MR) function interact with the automatic reset timeout in the LTC2960CTS8-1#TRMPBF?

When MR is pulled low, the LTC2960CTS8-1#TRMPBF forces RST low immediately, overriding the ADJ input state. After MR returns high, RST remains low for the full selected timeout period (15ms or 200ms), regardless of whether ADJ has already risen above threshold. This ensures deterministic reset hold time for processor initialization, even if the monitored supply recovers rapidly.

Can the LTC2960CTS8-1#TRMPBF be used to supervise a 48V battery system?

No - the LTC2960CTS8-1#TRMPBF VCC and input absolute maximum ratings are 40V and 3.5V respectively. Direct connection to 48V would exceed these limits and cause permanent damage. To supervise 48V, use an external Zener clamp (e.g., 30V Zener + current-limiting resistor) on VCC and scale the monitored voltage with a precision divider to keep ADJ/IN+ ≤3.5V. Refer to Figure 7(a) in the datasheet for transient-protected implementation.

What is the purpose of the RT pin on the LTC2960CTS8-1#TRMPBF, and how should it be configured?

The RT pin on the LTC2960CTS8-1#TRMPBF selects the reset timeout period: tie RT to GND for 15ms, or to VCC for 200ms. It is not a logic input - no voltage threshold is specified. Use a direct connection (no resistor) to ensure reliable selection. Do not leave RT floating, as this may cause undefined timeout behavior. RT has no function in LTC2960-3/-4 variants, which use DVCC instead.