NCP1396BDR2G

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The NCP1396BDR2G is a 4-pin AC/DC converter for primary application in offline, non-isolated, Switchers and flyback applications. This device features an operating current range of no more than 100 uA, a 2.75 V to 8 V input voltage range and an efficiency up to 87%. This converter is well-suited for applications such as digital media players, mobile phones and portable electronics.

The NCP1396BDR2G starts up directly from a wide range of AC voltage inputs and it is protected against over-voltage and over-temperature occurrences. The output current limit is adjustable via an external resistor and its output current can be set to a wide range of 2.5 A to 80 A.

The device includes integrated thermal shutdown circuitry for safe operation. Additionally, it is an open-drain output stage and does not require external FETs, making it ideal for space restricted applications. The output voltage is dynamically adjustable from 0.75 V to 5 V and the ripple current is accurately regulated in order to ensure a low-noise output.

The working principle of the NCP1396BDR2G is based around a high frequency, constant frequency, hysteretic mode architecture. The controlling oscillator receives its feedback from the output voltage and the amplitude of the oscillator signal is amplified to drive the main MOSFET switch. As the output is loaded or unloaded, the oscillator frequency gradually increases and as the voltage feedback signal drops, the frequency gradually decreases, such that the output voltage is equilibrated.

The device includes all the necessary built-in protections to ensure a safe, portable and durable operation. These include over-voltage protection, over-current protection, and over-temperature protection. In addition, the NCP1396BDR2G is housed in a SOT-23 housing and its low profile allows it to fit in cramped spaces.

In conclusion, the NCP1396BDR2G is a 4-pin, AC/DC converter designed for use in offline, non-isolated, Switchers and flyback applications. It features an operating current range of no more than 100 uA, and a wide range of 2.75 V to 8 V input voltage range. The output voltage is dynamically adjustable from 0.75 V to 5 V and the ripple current is accurately regulated in order to ensure a low-noise output. Furthermore, this device includes all the necessary built-in protections to ensure a safe, portable and durable operation.

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