LT3469ETS8#TRMPBF

Overview

The LT3469ETS8#TRMPBF is a transconductance amplifier with an integrated boost switching regulator, packaged in an 8-lead TSOT-23. It operates from a 2.5V to 16V input supply and generates a boosted VCC up to 35V for the amplifier stage. The gm amplifier provides a typical unloaded gain of 30,000 and drives capacitive loads between 5nF and 300nF. Key electrical parameters include a 1.3MHz switching frequency, a maximum output current of -40mA (typical), and an input common-mode range of 0V to 10V.

Feature Summary

• Integrates a high-frequency switching regulator to generate elevated supply voltage for the amplifier
• Features a differential gain stage with high impedance output suitable for driving capacitive loads
• Includes internal Schottky diode and current mode control for compact external component requirements

Applications

• Piezo microactuator drivers
• Piezo speaker amplifiers
• Varactor bias circuits

Procurement Notes

Verify that the specific suffix TRMPBF corresponds to tape and reel packaging when sourcing components. Confirm the manufacturer designation as Analog Devices Inc. or its predecessor Linear Technology Corporation. Ensure the part meets RoHS3 compliance standards required for your assembly process. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Selection Notes

Select this component when a wide output voltage swing is required from a low-voltage source. The internal boost converter eliminates the need for external high-voltage generation circuitry. Consider the thermal dissipation characteristics within the small TSOT-23 package during high-swing operation. Verify that the load capacitance falls within the stable operating range of 5nF to 300nF.

Part Context

This device belongs to the LT3469 family of piezo drivers. It combines power management and signal amplification into a single monolithic IC. The ThinSOT package allows for space-constrained designs. It serves as a specialized solution for driving piezoelectric elements where high voltage is necessary but board space is limited.

Replacement Considerations

Consult official documentation for direct substitutes. No verified public substitute part numbers are available in the provided data.