Texas Instruments

LM2678SX-5.0/NOPB

The LM2678SX-5.0/NOPB is a high-efficiency step-down switching regulator from Texas Instruments. It is designed to provide a stable and regulated output voltage from a higher input voltage source. Here's a brief description, features, and applications of the LM2678SX-5.0/NOPB:

Description:

The LM2678SX-5.0/NOPB is a synchronous buck converter that converts an input voltage typically ranging from 4.5V to 28V to a fixed 5V output voltage. It is available in a compact, thermally-optimized, no lead (NOPB) package, making it suitable for space-constrained applications.

Features:

1. Fixed 5V output voltage.
2. Wide input voltage range: 4.5V to 28V.
3. High efficiency (up to 93%) for improved power savings.
4. Low quiescent current (below 300µA) for low power consumption during no-load conditions.
5. Synchronous rectification for improved efficiency at light loads.
6. Thermal shutdown and over-current protection for enhanced reliability.
7. Small form factor (5-pin, 1.4mm pitch, no lead package).
8. Operating temperature range: -40°C to 125°C.

Applications:

1. Portable devices: Powering mobile phones, tablets, and other handheld electronics.
2. Power supplies: Converting higher voltage batteries (e.g., lithium-ion or lithium-polymer) to a stable 5V output for various electronic devices.
3. Industrial equipment: Providing regulated power to sensors, controllers, and other components.
4. Consumer electronics: Powering small appliances, home automation systems, and IoT devices.
5. Automotive applications: Converting 12V or 24V automotive battery voltage to a stable 5V supply for electronic accessories and control modules.

The LM2678SX-5.0/NOPB is a versatile and efficient step-down regulator suitable for a wide range of applications where a stable 5V output is required. Its compact form factor and high efficiency make it an excellent choice for space-constrained and power-sensitive designs.