STMicroelectronics

L4949EP  

Linear & Switching Voltage Regulators

L4949EP Description

The L4949EP is a linear regulator IC designed for precision power management applications, offering a fixed output voltage of 5V and a maximum output current of 100mA. Manufactured by STMicroelectronics, this regulator is part of the Power Management (PMIC) category and is housed in a surface-mount 20SO package. Despite being marked as obsolete, the L4949EP remains a reliable choice for applications requiring a stable power supply.

L4949EP Features

• Output Type: Fixed
• Voltage - Input (Max): 28V
• Current - Output: 100mA
• Number of Regulators: 1
• Output Configuration: Positive
• Current - Supply (Max): 5mA
• Voltage - Output (Min/Fixed): 5V
• Voltage Dropout (Max): 0.5V @ 100mA
• Current - Quiescent (Iq): 300µA
• Control Features: Reset Output
• Protection Features: Over Temperature, Short Circuit
• Moisture Sensitivity Level (MSL): 3 (168 Hours)
• Mounting Type: Surface Mount
• Package: Tube
• ECCN: EAR99
• HTSUS: 8542.39.0001
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

L4949EP Applications

The L4949EP is ideal for applications that require a stable and reliable power supply with a fixed output voltage. Its low dropout voltage of 0.5V at 100mA ensures high efficiency, making it suitable for battery-powered devices and systems where input voltage may vary. The regulator's over-temperature and short-circuit protection features enhance its robustness and reliability, making it suitable for critical applications.

Specific use cases include:

• Battery-Powered Devices: The low dropout voltage and high efficiency make it ideal for portable electronics and battery-operated systems.
• Industrial Equipment: The over-temperature and short-circuit protection features ensure reliability in harsh industrial environments.
• Telecommunications: The regulator's stability and precision make it suitable for powering sensitive communication equipment.

Conclusion of L4949EP

The L4949EP from STMicroelectronics is a high-performance linear regulator designed for applications requiring a stable 5V output. Its low dropout voltage and robust protection features make it a reliable choice for various power management needs. Despite its obsolete status, the L4949EP remains a viable option for engineers seeking a precision regulator with a proven track record. Its compliance with RoHS3 and REACH standards ensures it meets the latest environmental and safety regulations, making it a responsible choice for modern electronics design.

L4949EP Documents

Download datasheets and manufacturer documentation for L4949EP