TSM101IDT

Overview

The TSM101IDT is a voltage and current controller from STMicroelectronics, designed for secondary side control in switching power supplies. It integrates a high-stability series band gap voltage reference with 1% precision and a 10 mA output current capability. The device includes two operational amplifiers featuring ORed outputs and a 1 MHz gain bandwidth product, alongside a controlled current generator. It operates within a supply voltage range of 4.5 V to 32 V and supports an output voltage range of 1.24 V to 32 V. The component provides a maximum output current of 15 mA and functions reliably across a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a high-stability series band gap voltage reference with 1% precision
• Includes two operational amplifiers with ORed outputs and a 1 MHz gain bandwidth product
• Features a built-in current generator with enable/disable functionality for current limitation offset

Applications

• Secondary side control for switch-mode power supplies (SMPS)
• Constant voltage and constant current regulation feedback loops
• Optocoupler feedback interfaces to primary side PWM controllers

Procurement Notes

Verify the specific suffix IDT indicates tape and reel packaging when sourcing. Confirm RoHS compliance status through official STMicroelectronics documentation prior to integration. Ensure the SOIC-8 package dimensions match the target PCB footprint requirements. Validate that the 4.5 V to 32 V supply range aligns with the system's operating conditions.

Selection Notes

Select this component for applications requiring precise voltage referencing and dual amplifier feedback in isolated power converters. The integrated current generator simplifies circuit design by allowing direct offset adjustment for current limiting. Consider the 1 MHz bandwidth when designing compensation networks for high-frequency switching applications. Verify thermal performance within the specified industrial temperature range.

Part Context

The TSM101IDT belongs to the TSM101 family of power management ICs manufactured by STMicroelectronics. This series is categorized under PMIC - Power Management ICs and specifically Switching Controllers. The device is part of a broader portfolio designed for efficient power conversion, offering integrated solutions for secondary side regulation in various industrial and consumer electronics power supply designs.

Replacement Considerations

TSM101ACDT is listed as a similar alternative by the manufacturer.