UPC2905BT1D-E1-AT

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

The UPC2905BT1D-E1-AT is a three-terminal low dropout voltage regulator from the µPC2900 series, manufactured by Renesas Electronics. It utilizes a PNP output transistor to source an output current exceeding 1.0 A with a typical dropout voltage of 0.7 V at full load. This architecture significantly reduces power dissipation compared to conventional NPN-based regulators. The device includes on-chip overcurrent and thermal protection circuits, as well as output transistor safe area protection. It supports low voltage outputs such as 3 V and 3.3 V, which are not typically available in older low dropout regulator families.

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

• Utilizes PNP output transistor for high efficiency and reduced power dissipation
• Provides on-chip overcurrent and thermal protection circuits
• Includes output transistor safe area protection circuitry
• Capable of sourcing output current in excess of 1.0 A

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

• DC voltage stabilization circuits in AC/DC converters
• Low voltage regulation requiring minimal external components
• Noise-sensitive applications superior to switching power supplies

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

Verify the specific suffix BT1D-E1-AT against official Renesas documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints, as the µPC2900 series utilizes specific packages like MP-3Z or MP-45G. Confirm that the required output voltage matches the fixed variant selected, as the datasheet indicates support for standard low voltage outputs.

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

Select this component when designing systems requiring a positive voltage regulator with a dropout voltage of approximately 0.7 V at 1 A load. It is suitable for replacing conventional NPN-based three-terminal regulators where lower power dissipation is critical. Consider the integrated thermal and current protection features for robust operation in compact designs without extensive external protection components.

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

This part belongs to the µPC2900 series of three-terminal low dropout voltage regulators. The series is characterized by its PNP output stage, distinguishing it from earlier NPN-based models. It addresses the need for efficient regulation in low voltage applications, offering improved performance over legacy devices while maintaining simple external component requirements for stable DC voltage generation.

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

Direct substitutes within the µPC2900 family include variants with different output voltages or package options, such as the UPC2905T. Verify pinout compatibility and thermal characteristics before substitution. Cross-reference with other Renesas low dropout regulators if specific package constraints differ.