TSM1012ID

Overview

The TSM1012ID is a low consumption voltage and current controller designed for switch-mode power supply applications requiring constant voltage and constant current modes. It integrates one voltage reference and two operational amplifiers with ORed outputs. The device operates within an input voltage range of 4.5 V to 28 V, with a maximum supply voltage of 28 V. It provides a fixed output voltage reference of 1.25 V with 0.5% and 1% precision. The unit supports a maximum output current of 10 mA and draws a typical operating supply current of 100 uA. It functions reliably across a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a fixed 1.25 V voltage reference and two operational amplifiers with common collector outputs for combined CV/CC control
• Features a current sink output stage enabling easy compensation and high AC mains voltage rejection
• Designed for low external component count and low voltage operation in battery chargers and adapters

Applications

• Constant voltage and constant current mode control in switch-mode power supplies
• Battery charger systems requiring accurate regulation
• AC/DC adapter designs needing integrated current limiting

Procurement Notes

Verify the specific suffix ID indicates the SOIC-8 tube packaging configuration when sourcing. Confirm RoHS compliance status as it may vary by production batch or region. Ensure the procurement channel sources from authorized STMicroelectronics distributors to guarantee authenticity. Check for any recent product change notices regarding moisture sensitivity levels or package dimensions before finalizing orders.

Selection Notes

Select this component for designs prioritizing low quiescent current and minimal external parts count. The integrated dual op-amp structure simplifies feedback loop compensation compared to discrete solutions. Verify that the 1.25 V reference precision meets the system's overall accuracy requirements. Ensure the 28 V maximum supply voltage aligns with the peak input voltage of the target power supply topology.

Part Context

This part belongs to the TSM101x series of highly integrated controllers from STMicroelectronics. It shares architectural similarities with the TSM1011 and TSM1013 but differs in its internal voltage reference value and specific pinout configurations. The series targets cost-sensitive, high-volume consumer electronics power management applications where space and component count are critical constraints.

Replacement Considerations

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