TS3003ITD1033T

Overview

The TS3003ITD1033T is a single-supply oscillator/timer from Silicon Labs, operating within a voltage range of 1.55V to 5.25V. It consumes an ultra-low supply current of 1.9µA at 25kHz and supports output frequencies between 9kHz and 300kHz with a period accuracy of 3%. The device features separate PWM control and buffered CMOS outputs (FOUT and PWMOUT) with a driver resistance of 160Ω. Frequency is set by a single external resistor on the RSET pin, while pulse width modulation is controlled via the CPWM pin. It operates over a temperature range of -40°C to +85°C in a 10-pin TDFN package.

Feature Summary

• Ultra-low supply current of 1.9µA at 25kHz
• Single resistor sets output frequency (9kHz to 300kHz)
• Separate PWM control and buffered CMOS outputs
• Low-profile 10-pin TDFN package with exposed paddle

Applications

• Portable and battery-powered equipment
• Micropower clock generation
• Sequential timing applications
• Pulse-width modulation control
• Replacement for crystal and ceramic oscillators

Procurement Notes

Verify component authenticity through authorized channels as the TS3003ITD1033T may be subject to End-of-Life status or discontinuation notices. Confirm that the specific ordering suffix corresponds to the tape and reel packaging format containing 3000 units per carrier. Ensure compliance with RoHS standards and lead-free packaging requirements specified by the manufacturer.

Selection Notes

Select this component when low power consumption and minimal PCB area are critical constraints. The output frequency must be programmed using a high-precision resistor (1% tolerance recommended) connected to the RSET pin. For PWM functionality, ensure the CPWM capacitor value does not exceed the FOUT period to maintain proper operation. Consider the 160Ω output drive capability when designing load circuits.

Part Context

The TS3003 belongs to Silicon Labs' second-generation NanoWatt Analog CMOS timer family, joining the TS3001, TS3002, TS3004, and TS3006 models. It offers significant reductions in PCB area and power consumption compared to industry-standard 555-timer-based products. The ITD1033T designation indicates the industrial temperature grade (-40°C to +85°C) and the specific TDFN package configuration.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate generic CMOS timers or other members of the TS300x family based on specific frequency and power requirements, noting potential differences in package dimensions and electrical characteristics.