STMicroelectronics

SD4933

The SD4933 is a high-performance, synchronous, step-down (buck) regulator from STMicroelectronics. It is designed to provide efficient power conversion for a wide range of applications, including automotive, industrial, and telecom systems.

Description:

The SD4933 is a highly integrated, high-efficiency, synchronous step-down regulator that can operate from an input voltage range of 4.5V to 38V. It features a wide output voltage range of 0.9V to 38V and can deliver an output current of up to 3A. The device is available in a compact, thermally enhanced, 20-pin HSOP package.

Features:

1. Wide input voltage range: 4.5V to 38V
2. Wide output voltage range: 0.9V to 38V
3. High efficiency: up to 96% efficiency
4. Programmable soft-start
5. Over-current protection (OCP)
6. Over-voltage protection (OVP)
7. Under-voltage lockout (UVLO)
8. Thermal shutdown
9. High-frequency operation: up to 2MHz
10. Spread spectrum modulation for reduced EMI
11. Small footprint: 20-pin HSOP package

Applications:

1. Automotive applications: infotainment systems, instrument clusters, and lighting
2. Industrial applications: motor control, sensor power supplies, and industrial control systems
3. Telecommunication systems: base stations, routers, and switches
4. Portable devices: smartphones, tablets, and wearable devices
5. Consumer electronics: LED lighting, TV power supplies, and set-top boxes
6. Medical equipment: portable medical devices and medical monitoring systems

The SD4933 offers a combination of high efficiency, wide input and output voltage ranges, and advanced protection features, making it suitable for a wide range of power conversion applications. Its compact package and high-frequency operation also contribute to its versatility and ease of use in various designs.