Analog Devices Inc. LTC2936IGN#TRPBF

Overview

LTC2936IGN#TRPBF from Analog Devices (formerly Linear Technology) is a programmable hex voltage supervisor IC with integrated EEPROM, I²C interface, and six comparator outputs. It monitors up to six independent supply rails (0.2V–5.8V), offers ±1% threshold accuracy, 7.5µs comparator response, and autonomous fault logging-used in telecom server power sequencing and FPGA power-good validation.

For engineers reviewing the LTC2936IGN#TRPBF datasheet, LTC2936IGN#TRPBF pinout, LTC2936IGN#TRPBF application, or LTC2936IGN#TRPBF equivalent, key selection criteria include I²C-configurable UV/OV thresholds per channel, programmable GPIO delay-on-release (1ms–1.64s), EEPROM-backed fault history, and dual-supply operation (VPWR = 3.4V–13.9V or VDD33 = 3.3V).

Technical Context

The LTC2936IGN#TRPBF implements six independent analog comparators with user-selectable precision/low/medium input ranges, each supporting separate overvoltage and undervoltage trip points programmed via 8-bit DACs. Threshold resolution is 4mV (precision range), 10mV (low range), or 20mV (medium range), with guaranteed ±1% accuracy over –40°C to +85°C.

Its digital subsystem includes an I²C/SMBus slave interface (up to 400kHz), configurable GPI/GPIO logic mapping, programmable output polarity and type (open-drain or weak pull-up), and EEPROM-backed status registers that retain fault snapshots across power cycles without host intervention.

Key Specifications

Pinout & Package

Package: 24-lead plastic SSOP (GN), 4mm × 5mm QFN (UFD); LTC2936IGN#TRPBF uses the industrial-grade GN package (–40°C to +85°C) with exposed pad grounded.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6816ESE+ and TPS3808G33DBVR, the LTC2936IGN#TRPBF delivers unique value through its six-channel programmability, EEPROM-backed fault persistence, and I²C-based runtime reconfiguration-making it indispensable for high-availability systems requiring field-upgradable supervision logic.

Availability

LTC2936IGN#TRPBF is available at Aetrix Electronics and suitable for high-availability computer systems, network servers, and telecom equipment requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for LTC2936IGN#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) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC2936 belongs to Linear's precision power monitoring product line, designed specifically for mission-critical infrastructure where autonomous, configurable, and fault-resilient power supervision is mandatory.

FAQ

What is the operating temperature range for the LTC2936IGN#TRPBF?

The LTC2936IGN#TRPBF is rated for –40°C to +85°C, meeting industrial temperature requirements. This grade is confirmed by the "I" suffix in the part number and applies to both SSOP (GN) and QFN (UFD) packages. The device maintains full electrical specifications-including ±1% threshold accuracy and EEPROM functionality-across this entire range, with EEPROM derating guidance provided for junction temperatures above 85°C.

Does the LTC2936IGN#TRPBF require external pull-up resistors on SDA and SCL?

Yes, the LTC2936IGN#TRPBF requires external pull-up resistors on both SDA and SCL lines to ensure proper I²C bus operation. The internal circuitry does not provide active pull-ups on these pins. Recommended values depend on bus capacitance and speed but typically fall between 2.2kΩ and 10kΩ when using 3.3V or 5V I/O levels, per the I²C specification and Linear's application guidance.

Can the LTC2936IGN#TRPBF monitor sub-1V supplies like 0.85V or 0.9V?

Yes-the LTC2936IGN#TRPBF supports monitoring down to 0.2V in its precision range (4mV step resolution), making it suitable for modern low-voltage rails including 0.85V and 0.9V. Thresholds are set via I²C-programmable 8-bit DACs, and accuracy remains ±1% for nominal voltages between 0.6V and 1.2V, ensuring reliable supervision of advanced processor core supplies.

How does the EEPROM backup function work in the LTC2936IGN#TRPBF?

The LTC2936IGN#TRPBF automatically stores the first detected fault condition into internal EEPROM upon occurrence, independent of host intervention. This snapshot includes channel ID, fault type (UV/OV), timestamp, and status register contents. It persists for 10 years and survives power cycles, enabling post-failure analysis even if the host system is non-operational when the fault occurs.

Is the LTC2936IGN#TRPBF pin-compatible with other members of the LTC2936 family?

Yes-LTC2936IGN#TRPBF shares identical pinout and footprint with all LTC2936 variants (e.g., LTC2936CGN#TRPBF, LTC2936IUFD#TRPBF), whether in SSOP or QFN packages. The "I" grade denotes industrial temperature range, while "GN" specifies the 24-lead SSOP package. No PCB changes are required when migrating between temperature grades or package types within the same pin-count variant.