S-1312C11-A4T2U3

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S-1312C11-A4T2U3 is a voltage regulator, classified under PMIC - Voltage Regulators - Linear. It is a voltage regulator with integrated charge pump circuitry. It has a wide range of features, making it suitable for a variety of applications. The device combines the advantages of a high-performance regulator and of a charge-pump circuit, operating with an input voltage of 2.25 V to 5.5 V and providing a regulated output voltage of 2.25 V to 5.5 V with an accuracy of ±1.0 %.

Application Field

The S-1312C11-A4T2U3 is ideal for applications where high efficiency and low noise are essential. It has extended features such as adjustable output voltage, programmable overcurrent protection and soft-start functions making it highly suitable for a wide range of applications. It is found in low-power memory devices, microprocessor systems, battery-powered systems, data acquisition systems, digital cameras, medical devices, and various other applications requiring small form-factor and low-power consumption.

Working Principle

The charge-pump circuit of the S-1312C11-A4T2U3 operates at its best efficiency when the input voltage is above the output voltage by at least 2V. In this case, the circuit works as an inverting switch, charging two external capacitors using the input voltage supply. The charge stored in the capacitors is then used to supply power to the output, providing a regulated voltage with little output noise and low power consumption. The device also includes protection features such as over-current protection and thermal shutdown to prevent damage to the system.

The integrated switch-mode charge pump circuit of the S-1312C11-A4T2U3 provides fast response and high efficiency even when the input voltage is not above the output voltage. In this case, the device works as a non-inverting switch, storing energy in an internal capacitor and then releasing it to provide the constant output voltage.

The device also has embedded protection features such as over-current protection, under-voltage lockout, loop compensation, and thermal shutdown to protect the system from damage due to over-current or overheating. The regulator also features a Soft-Start function which reduces the output voltage gradually when the device is powered on, ensuring safe operation of the system.

Conclusion

The S-1312C11-A4T2U3 is a voltage regulator with integrated charge pump circuit and various protection features. It is suitable for a variety of applications where high efficiency and low noise are essential. The integrated switch-mode charge pump circuit provides fast response and high efficiency, even when the input voltage is not above the output voltage. The device also features various protection features such as over-current protection, under-voltage lockout, loop compensation, and thermal shutdown. The device is a great choice for many low-power memory devices, microprocessor systems, battery-powered systems, data acquisition systems, digital cameras, medical devices, and various other applications requiring small form-factor and low-power consumption.

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