S-1335D17-A4T2U3

The S-1335D17-A4T2U3 is a Linear Voltage Regulator. It is part of a family of power management ICs (PMICs) designed to regulate the desired input voltage to a required output. It features an adjustable output voltage range of 0.8V to 5.1 V and can provide up to 2 A of current. It also features a low dropout voltage of 1V. This linear regulator can be easliy configured and provides excellent dynamic performance.

Application Fields

The S-1335D17-A4 is widely used in embedded systems, such as mobile phones, tablets, cameras and car infotainment systems. It is well-suited for applications requiring adjustable output voltage, such as voltage regulation for high-performance processors, DSPs and memories. In addition, it is often used in battery-powered systems and applications requiring high efficiency.

Working Principle

The S-1335D17-A4 works by employing an error amplifier to compare the output voltage to a reference voltage set by an internal resistor. When the output voltage falls below the reference voltage, the error amplifier pulls the gate of the power switch high, turning on the switch. This allows more current to pass through the inductor, increasing the output voltage. Conversely, when the output voltage rises too high, the error amplifier pulls the gate of the power switch low, turning of the switch. This reduces the amount of current passing through the inductor, slowly decreasing the output voltage back to the reference voltage. By constantly adjusting the output voltage to the reference, the S-1335D17-A4 is able to maintain a stable and precise output voltage.

The S-1335D17-A4 also features several protection functions to prevent damage for both the device and application. These include Current Limit (CL), Over-Heat Protection, Under-Voltage Lockout and Over-Voltage Protection. Current Limit prevents damage from inrush current and over-current situations, while Over-Heat Protection shuts down the device when the junction temperature approaches its maximum operating temperature. Under-Voltage Lockout prevents the device from operating below a certain input voltage, while Over-Voltage Protection prevents the device from exceeding a set output voltage.

Conclusion

The S-1335D17-A4 is a versatile linear voltage regulator which can be used in a wide range of applications. It features an adjustable output voltage range, low dropout voltage and can supply up to 2 A of current. In addition, it has several protection mechanisms to protect both the device and application from damage. Together, these features make the S-1335D17-A4 an ideal choice for embedded systems, battery-powered systems, and applications requiring accurate voltage regulation.