TLE4470G

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The TLE4470G is a monolithic dual low-dropout linear voltage regulator from the OPTIREG™ series, designed for automotive applications. It features two positive outputs: a main output capable of 350 mA and a standby output providing 180 mA at 5 V with ±2% accuracy. The device operates within an input voltage range of 5.6 V to 45 V and supports a junction temperature range of -40 °C to +150 °C. Key electrical characteristics include a maximum dropout voltage of 0.6 V at 200 mA and a quiescent current of 500 µA. It includes integrated protection against short circuits, over-temperature, and overload.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Dual-output architecture with a high-current main channel and a precision 5 V standby channel.
• Integrated Power-On-Reset circuit monitoring the standby voltage for system reliability.
• Wide operating input voltage range supporting up to 45 V for robust automotive power supply handling.
• Comprehensive protection mechanisms including thermal shutdown, short-circuit, and overload safeguards.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive electronic control units requiring multiple regulated voltage rails
• Systems utilizing load dump protection circuits with wide input voltage swings
• Applications necessitating precise timing reset signals synchronized with power stability

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific revision code and packaging configuration when ordering, as Infineon may update component markings or internal revisions without changing the base part number. Confirm that the procurement source provides valid traceability documentation required for automotive-grade components. Ensure the selected package variant matches the intended PCB footprint design constraints.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a dual-regulator solution is needed to minimize board space compared to discrete regulators. The TLE4470G is suitable for designs where the main load requires up to 350 mA and a stable 5 V reference is needed for logic or sensors. Consider the 45 V input tolerance if the application involves direct battery connection or harsh automotive environments with significant voltage transients.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The TLE4470G belongs to Infineon's OPTIREG™ Linear family, which focuses on high-reliability power management for automotive electronics. This series emphasizes low dropout performance and integrated safety features. The TLE4470G specifically addresses the need for compact, dual-rail regulation in systems where space is limited but robust power delivery and reset functionality are critical for operational integrity.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The TLE4470GXUMA2 is a documented alternate marking/version of this component. Verify pin compatibility and electrical specifications before substitution. No other cross-model replacements are confirmed in public documentation.