Texas Instruments

TL974IPWR

The TL974IPWR is a high-performance, low-power, fixed frequency, current mode, step-down switching regulator from Texas Instruments. It is designed to provide efficient power conversion for a wide range of applications, including portable devices, battery-powered equipment, and power supplies.

Description:

The TL974IPWR is a highly integrated step-down converter that offers a wide input voltage range of 4V to 40V and can deliver an output current of up to 3A. It features a fixed switching frequency of 500kHz, which allows for smaller external component sizes and simplifies the design of the power supply.

Features:

1. Wide input voltage range: 4V to 40V
2. Output current up to 3A
3. Fixed switching frequency of 500kHz
4. High efficiency: up to 93% depending on the input voltage and output current
5. Low quiescent current: 45µA in run mode and 2.5µA in shutdown mode
6. Internal compensation and soft-start circuitry
7. Over-current protection, thermal shutdown, and under-voltage lockout
8. Small package size: available in a 20-pin HTSSOP package

Applications:

1. Portable devices: smartphones, tablets, and laptops
2. Battery-powered equipment: medical devices, handheld instruments, and wireless communication devices
3. Power supplies: for industrial and consumer electronics
4. LED lighting: for driving high-current LED arrays
5. Telecommunication equipment: base stations, routers, and switches

The TL974IPWR's combination of high efficiency, low quiescent current, and wide input voltage range make it an ideal choice for a variety of power conversion applications where space and energy efficiency are critical. Its fixed switching frequency and internal compensation simplify the design process and reduce the number of external components required, making it an attractive option for designers looking to minimize the size and complexity of their power supply solutions.