TS3002ITD822T

Overview

The TS3002ITD822T is a single-supply CMOS oscillator and timer manufactured by Silicon Labs. It operates within a supply voltage range of 0.9V to 1.8V, consuming as little as 1µA at 25kHz. The output frequency is programmable via an external resistor and capacitor, ranging from 5.2kHz to 90kHz with the BOOST pin grounded, or up to 290kHz when connected to VDD. The device features FOUT and PWMOUT push-pull outputs with a driver resistance of 160Ω. It is housed in an 8-pin TDFN package (2x2mm) with an exposed paddle.

Feature Summary

• Ultra-low supply current of 1µA at 25kHz
• Single-resistor and capacitor frequency programming
• Programmable frequency range: 5.2kHz to 290kHz
• PWM duty cycle control from 12% to 90%

Applications

• Portable and battery-powered equipment
• Low-parts-count nanopower oscillator
• Compact nanopower replacement for crystal and ceramic oscillators
• Nanopower pulse-width modulation control
• Nanopower clock generation

Procurement Notes

Verify component authenticity through authorized channels. Confirm the specific ordering suffix matches the required tape and reel quantity of 3000 units. Ensure compliance with RoHS lead-free packaging standards during procurement.

Selection Notes

Select this component for applications requiring minimal PCB area and ultra-low power consumption. Use the BOOST pin configuration to determine if the 90kHz or 290kHz maximum frequency limit meets system requirements. Ensure external RSET and CSET values are selected within specified tolerance limits for optimal performance.

Part Context

The TS3002 belongs to Silicon Labs' NanoWatt Analog portfolio, designed for high-performance analog integrated circuits optimized for ultra-long life in battery-powered applications. It serves as a low-profile alternative to traditional 555-timer-based oscillators.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternatives based on matching supply voltage ranges, package dimensions, and current consumption specifications.

FAQ

How is the output frequency programmed?

The output frequency is set using a single external resistor (RSET) and capacitor (CSET). The period is determined by the formula involving these components.

What is the function of the BOOST pin?

The BOOST pin controls the propagation delay of the internal comparator. Connecting it to GND limits the max frequency to ~90kHz, while connecting it to VDD extends it to 290kHz.

How is the PWM duty cycle controlled?

The duty cycle is adjusted by applying a DC voltage to the CNTRL pin. A voltage of 0.03 x VDD sets the duty cycle to 12%, while 0.27 x VDD sets it to 90%.