STMicroelectronics

TS4990IST

The TS4990IST is a high-performance, low-power, single-supply, step-down switching regulator from STMicroelectronics. It is designed to provide efficient and stable power conversion for a wide range of applications.

Description:

The TS4990IST is a step-down (buck) converter that can operate from a single supply voltage and provide a regulated output voltage to power various loads. It features a high-efficiency topology that minimizes power dissipation and allows for a compact solution with minimal external components.

Features:

1. Wide input voltage range: The TS4990IST can operate from input voltages as low as 2.5V and as high as 28V, making it suitable for a wide range of power supply sources.
2. High efficiency: The regulator features a high-efficiency topology that minimizes power dissipation and allows for a compact solution.
3. Low quiescent current: The TS4990IST has a low quiescent current of 2.5µA in shutdown mode, which helps to minimize power consumption in battery-powered applications.
4. Adjustable output voltage: The output voltage can be easily adjusted using an external resistor divider, allowing for customization to specific application requirements.
5. Soft-start function: The regulator features a soft-start function that limits the inrush current during startup, protecting the power supply and sensitive loads.
6. Protection features: The TS4990IST includes over-current protection, over-temperature protection, and output short-circuit protection to ensure safe and reliable operation.

Applications:

The TS4990IST is suitable for a wide range of applications that require efficient and stable power conversion, including:

1. Portable electronic devices: The TS4990IST can be used to power portable devices such as smartphones, tablets, and wearables.
2. Industrial control systems: The regulator can be used in industrial control systems to provide stable power to microcontrollers and other sensitive components.
3. Medical equipment: The TS4990IST can be used in medical equipment to provide regulated power to sensitive medical instruments.
4. Telecommunication systems: The regulator can be used in telecommunication systems to provide stable power to communication modules and other components.
5. Automotive applications: The TS4990IST can be used in automotive applications to provide regulated power to various electronic systems in vehicles.

In summary, the TS4990IST from STMicroelectronics is a high-performance, low-power, step-down switching regulator that offers a wide input voltage range, high efficiency, and a range of protection features. It is suitable for a wide range of applications that require efficient and stable power conversion.