TSM1014IDT

Overview

The TSM1014IDT is a voltage reference integrated circuit manufactured by STMicroelectronics, designed for precision power management applications. It features a fixed output voltage of 1.25V with a tolerance of ±1%. The device operates within an input voltage range of 4.5V to 28V and supports a maximum supply current of 50mA. It delivers a maximum output current of 2.5mA and functions reliably across an extended temperature range from -40°C to +105°C. The component is housed in an 8-SOIC surface-mount package.

Feature Summary

• Incorporates a high-stability series band gap voltage reference architecture
• Provides precise fixed output voltage regulation with tight tolerance
• Integrates operational amplifiers for feedback control loop implementation

Applications

• Switching power supply secondary side regulation
• Optocoupler biasing circuits in isolated converters
• PWM controller reference inputs for primary-side feedback

Procurement Notes

Verify the specific suffix 'IDT' against the manufacturer's official documentation to confirm tape-and-reel packaging availability versus tube options. Ensure the ordering part number matches the exact package type and temperature grade required for the design. Cross-reference the datasheet revision history for any pinout or electrical characteristic updates prior to final procurement.

Selection Notes

Select this component when a stable 1.25V reference is required for current mode control or optocoupler isolation interfaces. The wide input voltage range accommodates various bus voltages without additional pre-regulation. Consider the thermal performance and SO-8 footprint constraints during PCB layout planning to ensure adequate heat dissipation under continuous operation conditions.

Part Context

This device belongs to the TSM101 family of voltage and current controllers. It combines a precision reference with dual operational amplifiers and a current source to facilitate complete feedback loop construction. The integration simplifies the design of isolated AC/DC and DC/DC converters by reducing external component count compared to discrete solutions.

Replacement Considerations

Consult the manufacturer's cross-reference guide for direct replacements. Verify that alternative candidates match the 1.25V output, ±1% tolerance, and 8-SOIC package dimensions. Ensure substitute parts support the same operating temperature range and supply voltage limits.