SP6669DEK-L/TRR3

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PMIC (Power Management Interface Circuit) plays an important role in managing power supply in electronic devices, and DC DC switching regulator is one type of the commonly used PMICs. SP6669DEK-L/TRR3 is a popular DC DC switching regulator which is designed with high efficiency, high accuracy, and low standby current.

Applications

SP6669DEK-L/TRR3 has many different kinds of applications. It is mainly used to power up various electronic components such as processors and GPUs, as well as providing accurate power supplies for LCDs, camera modules, and DAC/ADC.

In cellular phones and tablets, it can be used as the baseband power supply, radio frequency power supply and CMMB power supply, etc. Besides, it is suitable to provide power in upcoming products like tablets, ultrabooks, and other slim notebooks.

Features & Benefits

The SP6669DEK-L/TRR3 features a wide input voltage range of 4.5V to 28V, with a high efficiency up to 90%. Its transistors have low on-state resistance, allowing high switch current up to 6A. Its output voltage is adjustable from 0.8V to 3.6V, and the output voltage accuracy is ±4%. Moreover, the low quiescent current and very low frequency jitter can achieve excellent power savings and stability.

Working Principle

The working principle of SP6669DEK-L/TRR3 is based on the usage of a switching transistor and a control circuit. The power switch is operated under the control of the external clock, and it helps to regulate the input voltage and current into the output voltage and current required. The control circuit constantly detects the output voltage level and adjusts the duty cycle of the switching transistor accordingly to ensure the output voltage is stable.

The internal compensation loop of SP6669DEK-L/TRR3 helps to ensure output stability, which requires additional components like capacitors and resistors. The capacitors are used to filter high-frequency noise while the resistors are used to limit the loop gain and thereby improve input-output transfer characteristics.

Conclusion

SP6669DEK-L/TRR3 is a popular DC DC switching regulator which has a wide input voltage range and a high efficiency. Also, its output voltage is adjustable from 0.8V to 3.6V and its accuracy is ±4%. It is mainly used to power up various electronic components, providing accurate power supplies to many applications such as cellular phones, tablets, and other slim notebooks. It features a low quiescent current and very low frequency jitter, helping to achieve excellent power savings and stability.

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