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PMIC - Voltage Regulators - Linear

The S-1335F22-A4T2U3 is a high performance, low dropout (LDO) two terminal voltage regulator that includes a junction field effect transistor (J-FET). The device is designed for high current and high temperature applications and has a wide operating temperature range from -40°C to +125°C. It offers fast transient response, excellent line and load regulation, low noise and low dropout voltage. The output voltage is fixed to +/- 2.5V and over-temperature protection is included to help ensure performance in harsh conditions.

This LDO is ideal for powering multiple low noise and low power systems such as mobile phones, consumer electronics, or any system where low current draws and error-free operation is required. It is also suitable for use in automotive and industrial applications where robust performance and a wide operating temperature range are essential. The S-1335F22-A4T2U3 also features a low input voltage of 1.6V, allowing it to be used in a wide range of applications.

Working Principle

The S-1335F22-A4T2U3 voltage regulator is based on a J-FET topology and employs a constant voltage feedback loop. The device consists of an internal error amplifier, a low RDS(ON) JFET pass switched, and an output voltage setting network. The internal error amplifier compares the output voltage to a fixed reference voltage, providing closed loop feedback. The output of the error amplifier is connected with the gate of the pass switched which controls the current flow in the external load. The pass switched also provides current limiting protection and helps prevent thermal runaway.

The device also includes a current limit circuit which monitors the load current and shuts off the device if the current exceeds a predetermined threshold. The current limit threshold can be set through external resistors. The device also has an internal temperature-sensing circuit which shuts off the device when its die temperature exceeds the set limit. The device is designed to be stable with ceramic capacitors, and its soft start capability minimizes the inrush current when the device turns on. The device can provide up to 2.4A of continuous current.

Application Field

The S-1335F22-A4T2U3 provides an excellent solution for powering multiple low noise and low power systems such as mobile phones, consumer electronics, or any system where low current draws and error-free operation is required. It is also suitable for use in automotive and industrial applications where robust performance and a wide operating temperature range are essential.

The device is also well suited for low noise applications such as audio amplifiers and low power powering of CMOS microcontrollers, SRAMs, ASICs, etc. Additionally, its low dropout voltage, low output noise and line transient response makes it ideal for use in battery and automotive applications as it can provide a constant voltage output despite changes in input voltage.

The S-1335F22-A4T2U3 offers high current and low dropout voltage with excellent line and load regulation. Its low current and low noise characteristics make it suitable for use in low noise and low power applications. The device is also designed for high temperature operation, offering wide operating temperature range from -40°C to +125°C.

Conclusion

The S-1335F22-A4T2U3 is a high performance, low dropout (LDO) two terminal voltage regulator with a wide operating temperature range from -40°C to +125°C. It offers fast transient response, excellent line and load regulation, low noise and low dropout voltage. This LDO is ideal for powering multiple low noise and low power systems such as mobile phones, consumer electronics, or any system where low current draws and error-free operation is required. Additionally, its low dropout voltage, low output noise and line transient response makes it ideal for use in battery and automotive applications.

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