Texas Instruments

LM3554TMX/NOPB  

External/Internal LED Drivers

The LM3554TMX/NOPB is a high-efficiency, step-down (buck) switching regulator from Texas Instruments. It is designed to provide a regulated output voltage from a higher input voltage source. Here's a brief description, features, and applications of the LM3554TMX/NOPB:

Description:

The LM3554TMX/NOPB is a monolithic step-down switching regulator that integrates a power MOSFET, an inductor, and a controller into a single package. It is designed to operate with input voltages ranging from 4.5V to 28V and can deliver up to 3A of continuous output current, making it suitable for a wide range of applications.

Features:

1. High Efficiency: The LM3554TMX/NOPB offers high efficiency, which can exceed 90% under light load conditions, making it ideal for battery-powered applications.
2. Wide Input Voltage Range: It can accept input voltages from 4.5V to 28V, making it suitable for various power sources.
3. Adjustable Output Voltage: The output voltage can be set using an external resistor divider, providing flexibility for different output voltage requirements.
4. Low Quiescent Current: The device has a low quiescent current, which helps extend the battery life in portable applications.
5. Short Circuit Protection: It includes built-in short circuit protection to prevent damage in case of a short circuit.
6. Over-Current Protection: The regulator features over-current protection to prevent damage due to excessive load current.
7. Thermal Shutdown: It has a thermal shutdown feature that protects the device from overheating.
8. Small Form Factor: The LM3554TMX/NOPB is available in a compact package, which is suitable for space-constrained applications.

Applications:

1. Portable Electronics: Due to its high efficiency and low quiescent current, the LM3554TMX/NOPB is well-suited for powering portable electronic devices like smartphones, tablets, and wearables.
2. Power Supplies: It can be used in compact power supply applications, such as adapters and chargers.
3. Industrial Equipment: The device can be used to provide regulated power to various industrial equipment and control systems.
4. Medical Devices: The LM3554TMX/NOPB can be used in battery-powered medical devices that require a stable and efficient power supply.
5. Telecommunications: It can be used in power supply applications for telecommunications equipment, such as routers and modems.

In summary, the LM3554TMX/NOPB is a versatile, high-efficiency step-down switching regulator that offers a wide input voltage range, adjustable output voltage, and built-in protection features, making it suitable for a variety of applications, particularly those requiring a compact and efficient power solution.

LM3554TMX/NOPB Documents

Download datasheets and manufacturer documentation for LM3554TMX/NOPB

Datasheets :

LM3554      

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Lighting Product Selector      

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LM3554