Texas Instruments

REG101UA-2.85/2K5

REG101UA-2.85/2K5 Description

The REG101UA-2.85/2K5 is a linear regulator IC designed by Texas Instruments, offering a fixed output voltage of 2.85V and a maximum output current of 100mA. This device is part of the Power Management Integrated Circuit (PMIC) category and is housed in an 8SOIC package. It features a maximum input voltage of 10V and a dropout voltage of 0.13V at 100mA, ensuring efficient power conversion even at low input-to-output differentials. The regulator includes protection features such as over-current and over-temperature protection, enhancing reliability and safety in various applications. Despite being marked as obsolete, the REG101UA-2.85/2K5 remains a robust solution for specific power management needs.

REG101UA-2.85/2K5 Features

• Output Type: Fixed
• Voltage - Input (Max): 10V
• Current - Output: 100mA
• Number of Regulators: 1
• Output Configuration: Positive
• Current - Supply (Max): 650 µA
• Voltage - Output (Min/Fixed): 2.85V
• Voltage Dropout (Max): 0.13V @ 100mA
• Current - Quiescent (Iq): 500 µA
• PSRR: 65dB (120Hz)
• Control Features: Enable
• Protection Features: Over Current, Over Temperature
• Mounting Type: Surface Mount
• Package: Tape & Reel (TR)
• Moisture Sensitivity Level (MSL): 2 (1 Year)
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8542.39.0001

The REG101UA-2.85/2K5 stands out with its low dropout voltage, making it suitable for applications where the input voltage is close to the output voltage. The enable control feature allows for dynamic power management, enabling the regulator to be turned on or off as needed. The high PSRR (Power Supply Rejection Ratio) ensures minimal noise and ripple on the output voltage, contributing to stable performance in sensitive electronic circuits.

REG101UA-2.85/2K5 Applications

The REG101UA-2.85/2K5 is ideal for applications requiring a stable, low-voltage power supply with minimal noise and efficient power conversion. Specific use cases include:

• Battery-Powered Devices: The low dropout voltage and efficient power conversion make it suitable for devices powered by batteries, where input voltage levels can vary.
• Low-Power Embedded Systems: The 100mA output current and low quiescent current are well-suited for microcontrollers and other low-power embedded systems.
• Medical Devices: The high PSRR and stable output voltage ensure reliable performance in sensitive medical equipment.
• Industrial Control Systems: The over-current and over-temperature protection features enhance reliability in harsh industrial environments.

Conclusion of REG101UA-2.85/2K5

The REG101UA-2.85/2K5 is a versatile linear regulator with a fixed output voltage of 2.85V and a maximum output current of 100mA. Its low dropout voltage, high PSRR, and protection features make it a reliable choice for a variety of applications, particularly in low-power and battery-operated devices. Despite its obsolete status, the REG101UA-2.85/2K5 continues to offer significant advantages in specific power management scenarios, ensuring stable and efficient power delivery.