LTC6991MPS6#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6991MPS6#TRMPBF 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 and includes a reset function to truncate pulses or prevent oscillation. It provides a CMOS output driver capable of sourcing and sinking 20mA.

Programmable Timers And Oscillators Feature Summary

• Programmable Period Range: 1.024ms to 9.54 hours (29.1µHz to 977Hz)
• Frequency Accuracy: ±1.5% maximum frequency error over temperature
• Supply Current: 55µA to 80µA depending on clock period
• Reset Function: Configurable active-high or active-low polarity via DIV pin
• AEC-Q100 Qualified: Suitable for automotive applications

Programmable Timers And Oscillators Applications

• Heartbeat Timers
• Watchdog Timers
• Intervalometers
• Periodic Wake-Up Call
• Portable and Battery-Powered Equipment

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRMPBF indicates a Tape and Reel Mini packaging configuration containing 500 pieces. Confirm the MPS6 designation corresponds to the SOT-23 package with the –55°C to 125°C operating temperature range. Ensure compatibility with the required supply voltage and load conditions before integration.

Programmable Timers And Oscillators Selection Notes

Select the LTC6991MPS6 variant when operation in extreme cold environments down to –55°C is required. Use the DIV pin resistor network to set the desired frequency divider ratio and output polarity. Calculate RSET based on the target period and chosen NDIV value to achieve the specified frequency accuracy. Consider the 500µs typical start-up time for system synchronization requirements.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. The LTC6991 series includes variants with different temperature grades and packages, such as the DCB (DFN) and S6 (TSOT-23) options. The MPS6 suffix specifically denotes the military/extended temperature grade version housed in a 6-lead Plastic TSOT-23 package.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include other LTC6991 variants with adjusted temperature ranges or packages, such as LTC6991HS6#TRMPBF for industrial temperature or LTC6991IS6#TRMPBF for commercial/industrial ranges. Verify package dimensions and pinout compatibility when substituting.