Texas Instruments

LM4991MAX/NOPB

The LM4991MAX/NOPB is a highly integrated, high-efficiency, synchronous, step-down switching regulator from Texas Instruments. It is designed to provide a stable and regulated output voltage from a wide range of input voltages. The device is suitable for a wide range of applications, including battery-powered systems, portable devices, and power supplies.

Description:

The LM4991MAX/NOPB is a step-down converter that converts a higher input voltage to a lower output voltage. It features a high-efficiency synchronous buck topology, which allows it to achieve high efficiency levels, even at high input voltages. The device is available in a small, thermally enhanced 20-pin QFN package, making it ideal for space-constrained applications.

Features:

1. High Efficiency: The LM4991MAX/NOPB achieves high efficiency levels of up to 96%, which helps reduce power consumption and improve overall system performance.
2. Wide Input Voltage Range: The device can operate with input voltages ranging from 4.5V to 28V, making it suitable for a wide range of applications.
3. Low Output Voltage: The LM4991MAX/NOPB can provide an output voltage as low as 0.9V, which is useful for powering low-voltage devices.
4. High Output Current: The device can deliver output currents up to 3A, making it suitable for applications requiring higher current levels.
5. Synchronous Buck Converter: The synchronous buck topology allows for high efficiency and low quiescent current operation.
6. Small Package: The device is available in a compact 20-pin QFN package, which is ideal for space-constrained applications.
7. Thermal Protection: The LM4991MAX/NOPB features thermal shutdown and over-temperature protection to ensure safe operation and prevent damage in the event of overheating.

Applications:

1. Portable Devices: The LM4991MAX/NOPB can be used in portable devices such as smartphones, tablets, and wearables to provide a stable and regulated power supply.
2. Battery-Powered Systems: The device is suitable for use in battery-powered systems, where high efficiency and low power consumption are critical.
3. Power Supplies: The LM4991MAX/NOPB can be used in power supply applications, where a stable and regulated output voltage is required.
4. Industrial Equipment: The device can be used in industrial equipment, where a wide input voltage range and high efficiency are important.
5. Automotive Applications: The LM4991MAX/NOPB can be used in automotive applications, where a stable power supply is required for various electronic systems.

In summary, the LM4991MAX/NOPB is a high-efficiency, synchronous, step-down switching regulator from Texas Instruments that offers a wide input voltage range, low output voltage, and high output current capabilities. It is suitable for a wide range of applications, including portable devices, battery-powered systems, power supplies, industrial equipment, and automotive applications.