TSM1011ID

Overview

The TSM1011ID is a constant voltage and constant current controller designed for switch-mode power supply applications. It integrates a fixed 2.545V voltage reference with two operational amplifiers featuring ORed outputs. The device supports low voltage operation within an input range of 4.5V to 28V, drawing a maximum operating supply current of 1mA. It provides a 27mA output current capability and operates reliably across a temperature range of 0°C to +105°C in an 8-SOIC package.

Feature Summary

• Integrates a fixed voltage reference and dual operational amplifiers for combined control functions
• Provides constant voltage and constant current regulation modes for power supplies
• Features a current sink output stage with easy compensation capabilities

Applications

• Switch-mode power supply (SMPS) designs requiring CV/CC modes
• Battery management systems utilizing constant voltage/current charging profiles
• Low external component count power regulation circuits

Procurement Notes

Verify the specific suffix 'ID' indicates tube packaging rather than tape-and-reel formats like 'IDT'. Confirm RoHS compliance status and moisture sensitivity level prior to ordering. Ensure the selected variant matches the required operating temperature range and package dimensions for the target PCB layout.

Selection Notes

Select this component when a single IC solution is needed for both voltage regulation and current limiting in SMPS topologies. The integrated design reduces external part count compared to discrete amplifier and reference combinations. Verify that the 2.545V internal reference aligns with the system's feedback requirements without needing external scaling resistors for the reference node.

Part Context

This device belongs to the TSM1011 family of highly integrated controllers from STMicroelectronics. It serves as a specialized PMIC solution for secondary side control in isolated converters. The family focuses on simplifying design by combining essential analog blocks into a compact surface-mount package suitable for high-volume manufacturing.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.