LTC6991IS6#TRPBF

Programmable Timers And Oscillators Overview

The LTC6991IS6#TRPBF is a silicon oscillator from the TimerBlox family, designed for long duration timing events. It features a programmable period range of 1.024ms to 9.54 hours (29.1µHz to 977Hz). The output clock period is determined by an internal master oscillator and a programmable frequency divider, NDIV, which offers eight settings from 1 to 2^21. Frequency is set via a single resistor, RSET, connected between the SET and GND pins. The device operates on a single supply voltage ranging from 2.25V to 5.5V.

Programmable Timers And Oscillators Feature Summary

• Programmable period range from 1.024ms to 9.54 hours using one to three resistors
• Maximum frequency error of less than 1.5% over temperature and supply variations
• Output reset function allows truncation of pulses or prevention of oscillation
• AEC-Q100 qualified for automotive applications with –40°C to 85°C operating temperature range

Programmable Timers And Oscillators Applications

• Heartbeat timers
• Watchdog timers
• Intervalometers
• Periodic wake-up calls
• Portable and battery-powered equipment

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 500 pieces. Confirm the IS6 designation corresponds to the Industrial temperature grade of –40°C to 85°C in the SOT-23 package. Ensure compatibility with automotive requirements if applicable, as only parts with the #W suffix are designated for controlled manufacturing in automotive applications.

Programmable Timers And Oscillators Selection Notes

Select the LTC6991IS6#TRPBF when an industrial temperature range of –40°C to 85°C is required in a TSOT-23 package. Use this part for designs needing low supply current, typically between 55µA and 80µA depending on the clock period. Ensure the application utilizes precision resistors for RSET to maintain the specified frequency accuracy of ±1.5%. Consider the 500µs start-up time when designing power-on sequences.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. The IS6 variant specifically denotes the Industrial temperature grade housed in a 6-lead plastic TSOT-23 package. It shares functional similarities with other LTC6991 variants but differs in temperature rating and packaging, such as the H-grade for extended temperatures or DCB for DFN packages.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include LTC6991CS6#TRPBF for commercial temperature ranges or LTC6991HS6#TRPBF for extended industrial temperatures. Automotive versions require the #W suffix, such as LTC6991IS6#WTRPBF. Cross-package alternatives like the LTC6991IDCB#TRPBF offer the same electrical performance in a DFN package.