Analog Devices Inc. LTC2960CDC-1#TRPBF

Overview

LTC2960CDC-1#TRPBF 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 portable and automotive 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 delivers reset signaling and auxiliary voltage status in battery-powered equipment requiring ultra-low power and wide supply tolerance.

For engineers reviewing the LTC2960CDC-1#TRPBF datasheet, LTC2960CDC-1#TRPBF pinout, LTC2960CDC-1#TRPBF application, or LTC2960CDC-1#TRPBF equivalent, key selection considerations include its 15ms/200ms selectable reset timeout, 36V open-drain RST/OUT outputs, manual reset input, adjustable 400mV reference-based thresholds via external dividers, and operation down to 2.5V supply with guaranteed output behavior above 1.2V.

Technical Context

The LTC2960CDC-1#TRPBF implements two independent comparators: one monitors the ADJ input against a 400mV internal reference to generate RST, with 2.5% hysteresis and programmable 15ms/200ms timeout; the second compares IN+ against the same reference to drive OUT, with 5% hysteresis. Its RT pin selects timeout duration, and MR enables external reset assertion.

It operates across 2.5V–36V VCC while consuming only 850nA typical supply current, enabling direct connection to high-voltage battery stacks without external regulators. The 36V open-drain outputs support pull-up to voltages exceeding VCC-critical for interfacing with higher-voltage logic or driving external FETs in UVLO and battery disconnect circuits.

Key Specifications

Pinout & Package

Package: 8-lead (2mm × 2mm) plastic DFN (DC8), exposed pad optional to GND. Operating temperature range: 0°C to 70°C (C-grade).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326US29D3+T and TPS389033DSER, the LTC2960CDC-1#TRPBF uniquely supports high-voltage (≤36V) monitoring, dual adjustable thresholds, manual reset, and selectable timeout - making it irreplaceable for multicell battery and automotive UVLO designs requiring configurability and nano-power operation.

Availability

LTC2960CDC-1#TRPBF is available at Aetrix Electronics and suitable for battery-powered portable equipment, automotive power supervision, security system backup power, and industrial regulator enable control requiring stable component supply and long-term manufacturability.

Supply support for LTC2960CDC-1#TRPBF 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 for the LTC portfolio.

The LTC2960 family was designed specifically for ultra-low-power, high-voltage voltage supervision in battery-critical systems - emphasizing nano-current operation, wide VCC range, and flexible dual-threshold monitoring without external timing components.

FAQ

What is the maximum input voltage the LTC2960CDC-1#TRPBF can monitor on its ADJ and IN+ pins?

The ADJ and IN+ pins of the LTC2960CDC-1#TRPBF have an absolute maximum rating of –0.3V to 3.5V. To monitor higher voltages (e.g., 8.4V battery), an external resistive divider must scale the input so that the voltage at ADJ or IN+ never exceeds 3.5V under all conditions-including transients. For example, a 6.41V threshold requires a 16.025:1 divider ratio (R1/R2 = 15.025) to yield 400mV at the pin.

Does the LTC2960CDC-1#TRPBF require external capacitors for stable operation?

Yes - a 0.1µF ceramic capacitor is recommended between VCC and GND, placed as close as possible to the device. This decouples supply noise and ensures clean internal reference operation. No capacitor is required on ADJ, IN+, or MR, but layout best practices advise minimizing trace length and avoiding noisy routing near these high-impedance inputs.

How does the RT pin affect reset timing in the LTC2960CDC-1#TRPBF?

The RT pin on the LTC2960CDC-1#TRPBF selects the reset timeout period: tying RT to GND configures a 15ms delay, while connecting RT to VCC selects 200ms. This timeout begins after the ADJ input rises above threshold (plus hysteresis) or after MR returns high, and delays RST's return to high state - preventing premature release during supply settling.

Can the LTC2960CDC-1#TRPBF drive a MOSFET gate directly?

Yes - the 36V open-drain RST and OUT outputs of the LTC2960CDC-1#TRPBF can sink up to ±5mA and tolerate up to 40V, allowing direct connection to the gate of a high-side N-channel MOSFET (with appropriate pull-up) or low-side P-channel MOSFET. For example, in Figure 10 of the datasheet, OUT controls Si4435 FETs for battery disconnect.

What is the purpose of the 5% hysteresis on the IN+ comparator in the LTC2960CDC-1#TRPBF?

The 5% hysteresis on the IN+ comparator (i.e., 20mV referred to the 400mV internal reference) prevents output chatter when the monitored voltage hovers near the threshold due to noise or load transients. For a 6.4V nominal IN+ threshold, this means OUT remains low until the input rises to ~6.72V and stays high until it falls to ~6.4V - ensuring clean, glitch-free signaling for critical functions like NMI interrupts or shutdown sequencing.