Texas Instruments

LP3964EMP-1.8

LP3964EMP-1.8 Description

The LP3964EMP-1.8 is a linear regulator designed by Texas Instruments, offering a fixed output voltage of 1.8V and a maximum output current of 800mA. This regulator is housed in a Surface Mount SOT223-5 package, making it suitable for compact and high-density PCB designs. Despite its small form factor, the LP3964EMP-1.8 delivers robust performance with a maximum input voltage of 7V and a dropout voltage of 0.35V at 800mA. The regulator also features an enable control, allowing for dynamic power management and enhanced system efficiency. With a quiescent current of 9mA and a supply current of 15mA, the LP3964EMP-1.8 ensures minimal power consumption during operation. Additionally, it includes comprehensive protection features such as over-current, over-temperature, and short-circuit protection, ensuring reliable performance under various operating conditions.

LP3964EMP-1.8 Features

• Output Type: Fixed
• Voltage - Input (Max): 7V
• Current - Output: 800mA
• Number of Regulators: 1
• Output Configuration: Positive
• Current - Supply (Max): 15mA
• Voltage - Output (Min/Fixed): 1.8V
• Voltage Dropout (Max): 0.35V @ 800mA
• Current - Quiescent (Iq): 9mA
• Control Features: Enable
• Protection Features: Over Current, Over Temperature, Short Circuit
• Package: Tape & Reel (TR)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8542.39.0001

LP3964EMP-1.8 Applications

The LP3964EMP-1.8 is ideal for applications requiring a stable and efficient power supply with minimal footprint. Its low dropout voltage and high output current make it suitable for powering sensitive electronics in compact devices. Key applications include:

• Portable Devices: Ideal for smartphones, tablets, and other handheld devices where space is limited and power efficiency is critical.
• Consumer Electronics: Suitable for powering low-voltage components in devices such as digital cameras, media players, and smartwatches.
• Industrial Systems: Applicable in compact industrial control systems and IoT devices that require reliable power management.
• Medical Devices: Can be used in portable medical equipment such as glucose meters and wearable health monitors, where precision and reliability are paramount.

Conclusion of LP3964EMP-1.8

The LP3964EMP-1.8 from Texas Instruments is a versatile linear regulator that combines high performance with a compact design. Its fixed 1.8V output and 800mA current capability make it suitable for a wide range of applications, particularly in portable and space-constrained devices. The inclusion of enable control and comprehensive protection features enhances its reliability and adaptability. Despite being marked as obsolete, the LP3964EMP-1.8 remains a valuable component for designers seeking a reliable and efficient power management solution.