Texas Instruments

LP2985-29DBVR

LP2985-29DBVR Description

The LP2985-29DBVR is a fixed-output linear voltage regulator designed by Texas Instruments, offering a regulated output voltage of 2.9V with a maximum output current of 150mA. This device is housed in a compact SOT23-5 package, making it suitable for surface mount applications. Despite being marked as obsolete, the LP2985-29DBVR remains a reliable choice for applications requiring a stable and efficient power supply.

LP2985-29DBVR Features

• Output Type: Fixed at 2.9V, ensuring a stable voltage supply.
• Input Voltage Range: Capable of handling input voltages up to 16V, providing flexibility in power source selection.
• Output Current: Delivers a maximum of 150mA, sufficient for a wide range of low-power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.58V at 150mA, the LP2985-29DBVR maintains efficiency even under low input-to-output voltage differentials.
• Low Quiescent Current: Consumes only 95µA in quiescent state, minimizing power loss and extending battery life in portable devices.
• Power Supply Rejection Ratio (PSRR): Achieves 45dB at 1kHz, effectively filtering out noise and ripple from the input supply.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection, ensuring robust operation and reliability.
• Enable Feature: Offers an enable pin for easy control and power management.
• Compliance: Meets REACH and RoHS3 compliance, ensuring environmental safety and regulatory adherence.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for a variety of manufacturing environments.

LP2985-29DBVR Applications

The LP2985-29DBVR is ideal for applications requiring a stable and low-noise power supply. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices where input voltage may vary significantly. The enable feature allows for dynamic power management, making it a preferred choice for applications such as:

• Portable electronic devices
• Low-power microcontroller systems
• Communication modules
• Sensor interfaces
• Medical devices requiring stable power supply

Conclusion of LP2985-29DBVR

The LP2985-29DBVR, despite its obsolete status, remains a valuable component in the Texas Instruments portfolio. Its combination of fixed output voltage, low dropout, and robust protection features make it a reliable choice for a variety of applications. The compact SOT23-5 package and surface mount compatibility further enhance its versatility. For designers seeking a stable and efficient power solution, the LP2985-29DBVR offers a proven and effective option.