TSM1011IST

Overview

The TSM1011IST is a battery management constant voltage and constant current controller manufactured by STMicroelectronics. It provides integrated solutions for switch-mode power supply applications requiring precise CV and CC modes. The device integrates one voltage reference and two operational amplifiers with ORed outputs. Key electrical parameters include an operating supply voltage range of 4.5 V to 28 V, a maximum output current of 27 mA, and a fixed voltage reference of 2.545 V. It operates within a temperature range of 0 °C to 105 °C and is housed in an 8-pin SOIC package.

Feature Summary

• Integrates one voltage reference and two operational amplifiers with ORed outputs for combined control functions
• Provides low external component count requirements for simplified circuit design
• Features a current sink output stage for efficient load handling
• Includes 2 kV ESD protection for enhanced robustness

Applications

• Switch-mode power supply (SMPS) applications requiring constant voltage mode
• Battery management systems utilizing constant current charging profiles
• Power supplies needing integrated voltage and current limiting capabilities

Procurement Notes

Verify the specific suffix IST against official STMicroelectronics documentation to confirm package type and temperature grade compatibility. Ensure the procurement channel provides valid RoHS compliance certificates as indicated in public records. Cross-reference the part number with the manufacturer's latest datasheet to confirm active status and any potential obsolescence notices before finalizing orders.

Selection Notes

Select this component when designing SMPS circuits that require both constant voltage and constant current regulation from a single IC. The integrated voltage reference and dual op-amps reduce external component count compared to discrete solutions. Consider the 4.5 V to 28 V input range and 27 mA output capability to ensure it meets the specific power delivery requirements of the target application.

Part Context

The TSM1011IST belongs to the TSM1011 family of battery management controllers from STMicroelectronics. This series is designed for secondary side switch-mode power supply control. The family typically includes variants with different temperature grades and packaging options, such as the IDT and AID versions, all sharing the core functionality of integrated CV/CC control.

Replacement Considerations

Publicly confirmed substitute part numbers for the TSM1011IST are not available in the provided source material. Verify pinout and functional compatibility with other STMicroelectronics PMICs or similar CV/CC controllers if direct substitutes are required.