Analog Devices Inc. LTC2916CTS8-1#TRPBF

Overview

LTC2916CTS8-1#TRPBF from Analog Devices (formerly Linear Technology) is a precision voltage supervisor IC with fixed –5% tolerance, 9 selectable nominal thresholds (12V to 1.0V + ADJ), and integrated manual reset input. It operates from 1.5V to 5.5V supply, consumes 30μA quiescent current, guarantees ±1.5% threshold accuracy over –40°C to 125°C, and delivers glitch-immune open-drain RST output for automotive power monitoring.

For engineers reviewing the LTC2916CTS8-1#TRPBF datasheet, LTC2916CTS8-1#TRPBF pinout, LTC2916CTS8-1#TRPBF application, or LTC2916CTS8-1#TRPBF equivalent, key selection criteria include its fixed –5% tolerance, TSOT-23-8 package, MR pin support for push-button reset, guaranteed RST assertion down to VCC ≥ 0.8V, and operation up to 125°C in automotive control systems.

Technical Context

The LTC2916CTS8-1#TRPBF implements a precision comparator-based supervision architecture with internal reference division and three-state SEL1/SEL2 decoding to select one of nine nominal VM thresholds. Its fixed –5% tolerance eliminates TOL pin configuration complexity versus the LTC2915.

It integrates a 200ms internal reset timeout (selectable via RT pin tied to VCC), supports external capacitor adjustment (9ms/nF), and features an internal 6.2V shunt regulator enabling direct operation from supplies up to 12V with series current-limiting resistor. The MR input has 100kΩ internal pull-up and accepts momentary push-button interface without external components.

Key Specifications

Pinout & Package

Package: 8-Lead TSOT-23 (ThinSOT™), 3mm × 1.75mm footprint, 1mm profile, lead-free, tape-and-reel (TRPBF).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2915CTS8-1#TRPBF, LTC2916CTS8-1#TRPBF trades TOL configurability for MR functionality-critical for field-serviceable systems. Versus TPS3808G18DBVR, it provides 9 thresholds, ADJ mode, and automotive temp grade, justifying use in multi-rail, high-reliability designs.

Availability

LTC2916CTS8-1#TRPBF is available at Aetrix Electronics and suitable for automotive control systems, industrial PLC I/O modules, medical infusion pump controllers, and optical network line cards requiring stable component supply across extended temperature ranges.

Supply support for LTC2916CTS8-1#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC2916CTS8-1#TRPBF belongs to Linear's precision voltage supervisor product line, engineered for automotive, industrial, and medical systems demanding guaranteed reset behavior under extreme thermal and electrical stress.

FAQ

What is the function of the MR pin on the LTC2916CTS8-1#TRPBF?

The MR (Manual Reset) pin on the LTC2916CTS8-1#TRPBF is an active-low input with internal 100kΩ pull-up to VCC. When pulled low (e.g., by a momentary push button), it forces the RST output low for one full reset timeout period (e.g., 200ms if RT = VCC), then releases it. This enables field-service reset without power cycling. The LTC2916CTS8-1#TRPBF is the only variant in the LTC2915/LTC2916 family with this MR feature.

How does the LTC2916CTS8-1#TRPBF achieve ±1.5% threshold accuracy over temperature?

The LTC2916CTS8-1#TRPBF achieves ±1.5% threshold accuracy across –40°C to 125°C through laser-trimmed internal reference dividers and matched comparator circuitry. This specification is guaranteed in production test for all 9 nominal thresholds (e.g., 1.8V, 3.3V, 5V) and applies to both fixed –5% tolerance and ADJ mode. The accuracy is independent of VCC variation within 1.5V–5.5V and is validated per JEDEC JESD22-A108 thermal cycling standards.

Can the LTC2916CTS8-1#TRPBF monitor a 12V supply directly?

Yes, the LTC2916CTS8-1#TRPBF can monitor a 12V supply directly using its internal 6.2V shunt regulator on the VCC pin. A series current-limiting resistor (RCC) must be placed between the 12V source and VCC to limit input current to ≤5mA. For a 12V supply, RCC ≈ 1.2kΩ ensures safe operation. The VM pin then monitors the 12V rail directly, with threshold set to 11.4V (12V × 0.95) via SEL1=VCC and SEL2=VCC.

What is the minimum VCC voltage required for the LTC2916CTS8-1#TRPBF to assert a valid RST?

The LTC2916CTS8-1#TRPBF guarantees RST assertion (low) for VCC ≥ 0.8V, even before exiting undervoltage lockout (VCC(UVLO) ≤ 1.5V). This ensures early reset signaling during power-up brownouts. Below 0.8V, RST behavior is undefined. Once VCC exceeds 1.5V, the supervisor fully enables and monitors VM against the programmed threshold with ±1.5% accuracy.

How do I configure the LTC2916CTS8-1#TRPBF for an adjustable 1.0V supply with –5% tolerance?

To monitor a 1.0V supply at –5% (trip = 0.95V), configure the LTC2916CTS8-1#TRPBF in ADJ mode: set SEL1=GND and SEL2=GND. Connect VM to a resistive divider from the 1.0V rail to GND, sized so VM = 0.5V when the rail is at nominal 1.0V (e.g., R1 = 100kΩ, R2 = 100kΩ). The internal comparator compares VM to 0.5V ±1.5%, yielding a final trip point of 0.95V ±15mV over temperature.