TSM1011AIST

Overview

The TSM1011AIST is a highly integrated constant voltage and constant current controller designed for switch-mode power supply applications. It integrates one fixed voltage reference and two operational amplifiers with ORed outputs in an 8-pin SOIC package. The device supports low voltage operation and provides easy compensation capabilities. Key electrical parameters include a fixed output voltage reference of 2.545 V with 0.5% and 1% precision options, and 2 kV ESD protection.

Feature Summary

• Integrates one voltage reference and two operational amplifiers with ORed outputs for combined control functions
• Provides constant voltage and constant current control modes suitable for battery management
• Features a current sink output stage to simplify external circuit design
• Includes built-in 2 kV electrostatic discharge protection

Applications

• Switch-mode power supply (SMPS) designs requiring CV/CC modes
• Battery management systems
• Constant voltage and constant current charging controllers

Procurement Notes

Verify the specific suffix 'IST' against official STMicroelectronics documentation to confirm package type and temperature grade. Ensure the selected variant matches the required voltage reference precision (0.5% or 1%) and operating temperature range specifications for your application.

Selection Notes

Select this component when a single IC solution is needed for both voltage regulation and current limiting in SMPS topologies. Consider the integrated nature of the voltage reference and dual op-amps to reduce external component count. Verify that the 2.545 V reference output aligns with the feedback network requirements of the target power supply design.

Part Context

The TSM1011 belongs to the TSM101 family of power management ICs from STMicroelectronics. This series focuses on providing integrated solutions for secondary side control in flyback converters. The TSM1011 specifically addresses applications needing simultaneous constant voltage and constant current regulation within a compact footprint.

Replacement Considerations

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