Texas Instruments

LM4951ASD/NOPB

The LM4951ASD/NOPB is a highly integrated, high-efficiency, step-down (buck) switching regulator from Texas Instruments. It is designed to provide a stable and efficient power supply for a wide range of applications.

Description:

The LM4951ASD/NOPB is a synchronous, step-down (buck) converter that can operate from an input voltage range of 4.5V to 23V. It is available in a compact, thermally-optimized, 20-pin HTSSOP package. The device features a high-efficiency, current-mode architecture that provides excellent transient response and ease of use.

Features:

1. Wide input voltage range: 4.5V to 23V
2. High efficiency: up to 95% depending on the input voltage and output current
3. Output voltage as low as 0.9V
4. Adjustable output current limit
5. Integrated power MOSFETs with low Rds(on)
6. Programmable soft-start
7. External compensation pin for easy optimization
8. Thermal shutdown and over-current protection
9. Small package size: 20-pin HTSSOP

Applications:

1. Portable devices: smartphones, tablets, and wearables
2. Power banks and battery chargers
3. Industrial and automotive systems
4. LED lighting and drivers
5. Medical equipment
6. Telecom and networking equipment

The LM4951ASD/NOPB is a versatile and efficient solution for a wide range of step-down power conversion applications. Its high efficiency, wide input voltage range, and compact package make it an ideal choice for space-constrained and power-sensitive applications.