TS4436ICT

Overview

The TS4436ICT is an adjustable shunt voltage reference manufactured by STMicroelectronics, housed in a SC-70-5 surface-mount package. It integrates a 0.6V precision reference, an amplifier, and an open-collector output transistor. The device supports an adjustable output voltage range from 0.6V to 1.8V with a tolerance of ±1%. Key electrical parameters include a maximum cathode current of 250 µA, a maximum output current of 20 mA, and a temperature coefficient of 150ppm/°C. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a low saturation voltage open collector transistor suitable for series connection with optocouplers
• Maintains feedback voltage stability through closed-loop configuration proportional to error voltage
• Designed specifically for low voltage Switch Mode Power Supplies (SMPS) applications

Applications

• Low voltage Switch Mode Power Supplies (SMPS)
• Voltage regulation circuits up to 1.8V output
• Optocoupler interface stages in power converters

Procurement Notes

Verify the specific suffix 'ICT' corresponds to the SC-70-5 package and ±1% tolerance variant when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the procurement channel provides valid traceability for the STMicroelectronics manufacturing origin. Check for any specific handling requirements related to the moisture sensitivity level indicated in the component datasheet.

Selection Notes

Select this component for designs requiring precise low-voltage regulation where space constraints necessitate the SC-70-5 footprint. It serves as a direct functional alternative to standard TL431 references in low-voltage contexts due to its optimized saturation characteristics. Consider the 150ppm/°C temperature coefficient against application thermal stability requirements. Verify that the 250 µA minimum operating current aligns with the system's quiescent power budget.

Part Context

The TS4436 belongs to a family of four-terminal shunt voltage references designed for SMPS feedback loops. Unlike traditional references, it combines the reference element with an integrated amplifier and driver in a compact form factor. This integration reduces external component count while maintaining high accuracy. The ICT designation specifies the tape-and-reel packaging format for automated assembly processes.

Replacement Considerations

TS4436AICT offers improved initial accuracy at ±0.5% tolerance while maintaining identical pinout and electrical characteristics.