S-8331A28FS-T2-G

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Switching regulators provide the high efficiency and small size required for many modern applications. As an example of such devices, the S-8331A28FS-T2-G is a DC/DC synchronous buck regulator with an integrated low RDS (ON) power MOSFET that supports wide input voltage range from 2.8V to 6V. With its switching frequency up to 1.5MHz, it can offer high efficiency and fast transient response when adjusting output voltage. What’s more, the integrated low drop-out voltage loop compensation and internal power MOSFETs make the S-8331A28FS-T2-G an ideal choice in applications where both efficiency and size are highly desired.

The S-8331A28FS-T2-G is a highly integrated synchronous buck regulator which can be used as a step-down DC/DC converter to save space in the application. Its 0.68mR RDS(ON) integrated power MOSFET enables the S-8331A28FS-T2-G to provide a low solution cost, high efficiency, and wide input voltage range over the operating conditions. Meanwhile, the integrated low voltage drop-out voltage loop compensation and internal power MOSFETs provide a fast transient response when the output voltage is adjusted. Thanks to its high switching frequency up to 1.5MHz, it can achieve high efficiency conversion for both light and heavy load. In addition, the delay removed fast load transient response and low supply current protect the S-8331A28FS-T2-G problems with over-voltage, short-circuit, and over-temperature conditions.

The S-8331A28FS-T2-G is suitable for variety of applications, most of which involve low- to mid-power consumption and require a controllable voltage output. This includes applications such as wireless telecommunications, handheld communication devices, low-power portable device and etc. Battery-operated applications also benefit from this device,as it enables high efficiency conversion while eliminating lose due to mosfet body diode.

The operation principle of the S-8331A28FS-T2-G is very simple. When initilized, the S-8331A28FS-T2-G continuously compares the voltage on the FB pin to the reference voltage and regulates the output voltage using a constant duty cycle Pulse Width Modulation (PWM) oscillator. The peak-current-mode control adds an optimized current sensing network to the synchronous PWM controller as well as provides a fast transient response and a better thermal performance. The MOSFET, which serves as the main switch, is turned on and off according to the oscillator signal.

The S-8331A28FS-T2-G adopts a hysteretic control loop and a ripple cancellation network to ensure a stable and low ripple output voltage. In the event of a severe short-circuit on the output, an over-current protection (OCP) circuit disconnects the MOSFET to limit the load current and protect itself. If the ambient temperature enters the thermal protection window, the thermal PIN signal will output low voltage to reduce the output power, guaranteeing safety protection and improved efficiency.

In conclusion, the S-8331A28FS-T2-G synchronous buck regulator is the ideal choice when power efficiency, cost and size requirements are demanded. Together with its advantages such as wide input voltage range, fast transient response and robust protection, it will undoubtedly remain a popular device in the DC/DC switching regulator market.

The specific data is subject to PDF, and the above content is for reference