Analog Devices Inc. LTC1696HS6#TRPBF

Overview

LTC1696HS6#TRPBF from Analog Devices (formerly Linear Technology) is a standalone overvoltage protection controller that monitors two independent DC output voltages (0.8V–24V range) and latches its OUT pin high upon fault detection to trigger an external SCR crowbar or disable back-to-back N-channel MOSFETs. It features ±2% overvoltage threshold accuracy, 2.7V–27V supply range, and operates up to 150°C junction temperature. Used in telecom power supplies and industrial control systems for load protection against regulator failure.

For engineers reviewing the LTC1696HS6#TRPBF datasheet, LTC1696HS6#TRPBF pinout, LTC1696HS6#TRPBF application, or LTC1696HS6#TRPBF equivalent, key selection considerations include dual-feedback monitoring capability, programmable glitch filter timing via TIMER/RESET pin, latch-reset behavior, thermal grade (H-grade: –40°C to 150°C), and compatibility with SCR crowbar or MOSFET disconnect topologies.

Technical Context

The LTC1696HS6#TRPBF implements dual independent comparators referencing a precision 0.88V internal bandgap, each monitoring FB1 or FB2 with hysteresis of 12mV. Its output logic includes a latch that remains asserted until reset via TIMER/RESET pin low pulse or VCC undervoltage lockout (1.94V low-to-high threshold).

Pin 6 serves three roles: timer capacitor connection point (setting glitch filter delay), active-low reset input, and external trigger input (pulling high forces OUT high regardless of FB1/FB2 status). The device draws only 170µA standby current at 12V and delivers up to 80mA sink/source capability on the OUT pin at 27V.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (ThinSOT™), 1mm profile, JEDEC MO-193 compliant. Pin pitch: 0.95mm, body size: 2.9mm × 1.6mm × 1.0mm max.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar overvoltage protection applications.

Compared with TPS26631RGER and MAX6495ATA+T, the LTC1696HS6#TRPBF uniquely provides simultaneous dual-rail monitoring with field-programmable glitch immunity and H-grade thermal robustness - making it the only option for high-reliability, multi-rail overvoltage protection in harsh environments.

Availability

LTC1696HS6#TRPBF is available at Aetrix Electronics and suitable for telecom power systems, industrial PLCs, notebook adapter interfaces, and 5G base station RF supply protection requiring stable component supply across extended temperature ranges.

Supply support for LTC1696HS6#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 continuity for legacy Linear parts including the LTC portfolio.

The LTC1696 belongs to Linear's precision analog power protection product line, designed specifically for high-reliability DC power supervision in telecom, industrial, and computing infrastructure where regulator failure could cause system-level damage.

FAQ

What is the maximum operating junction temperature for the LTC1696HS6#TRPBF?

The LTC1696HS6#TRPBF is rated for a maximum junction temperature of 150°C, confirmed by its H-grade qualification and Absolute Maximum Ratings table. This allows reliable operation in high-ambient environments such as enclosed industrial enclosures or near heat-generating RF power stages, provided board-level thermal design meets θJA = 192°C/W requirement.

How does the TIMER/RESET pin function in overvoltage fault recovery?

In an overvoltage fault, the LTC1696HS6#TRPBF latches its OUT pin high. Recovery requires pulling the TIMER/RESET pin low (via N-channel MOSFET or open-drain driver) to reset the internal latch. The pin must be held low for >100ns; releasing it restores normal monitoring - unlike automatic self-resetting devices, this ensures manual or controlled intervention before re-enabling the protected rail.

Can the LTC1696HS6#TRPBF monitor two different voltage rails simultaneously?

Yes, the LTC1696HS6#TRPBF has dedicated FB1 and FB2 inputs, each independently comparing its sensed voltage against the same 0.88V internal reference. Both inputs support 0.8V–24V sensing ranges using external resistor dividers, enabling concurrent monitoring of disparate rails like 3.3V and 12V without shared components or accuracy degradation.

What is the typical propagation delay from overvoltage detection to OUT assertion for the LTC1696HS6#TRPBF?

The LTC1696HS6#TRPBF exhibits 6–24µs typical propagation delay (tOVPD1,2) when both FB1 and FB2 exceed threshold, and 7–28µs (tOVPD1 or tOVPD2) for single-input faults. Delay decreases with higher feedback overdrive above 0.88V - e.g., 200mV overdrive reduces response to minimum spec values - ensuring fastest possible reaction to severe faults.

Is the LTC1696HS6#TRPBF compatible with SCR crowbar circuits?

Yes, the LTC1696HS6#TRPBF's OUT pin delivers up to 80mA at 27V, sufficient to directly trigger common SCRs like the 2N6507 without external buffering. Application Note 1696 TA01 confirms this topology, and the device's latch behavior holds the SCR gate energized until manually reset - providing robust, self-sustaining crowbar activation during overvoltage events.