Silicon oscillator for programmable timing — no crystal needed
The LTC6992CDCB-3#TRMPBF is a silicon oscillator from the TimerBlox® family, generating frequencies from 3.81 Hz up to 1 MHz without an external crystal or ceramic resonator. That means one part covers sub-audio watchdog timers through low-MHz clock generation — the frequency is set by a single resistor, not a quartz blank. Supply current is 365 µA across the 2.25 V to 5.5 V range.
ROHS3 compliant, so it passes into European and California-restricted builds without an exemption review.
Sourcing against the BOM line
Active part, no cross-reference needed — the LTC6992CDCB-3#TRMPBF is the -3 variant (PWM output with a specific duty-cycle mapping).