NJM3770AD3

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The NJM3770AD3 is a digital high-current step-down voltage converter used in power management integrated circuit (PMIC) digital motor driver and controller applications. It is a DC-DC converter designed to convert an input voltage of up to 18V down to an output voltage of 3.6V. The efficiency is up to 95%.

Features of the NJM3770AD3

The NJM3770AD3 features a digitally controlled current mode operation with excellent integration and fast transient response. It also features a wide-range Analog gain control for fine tuning of current response, an integrated transconductance amplifier for low output noise, and an adjustable output current limit. The current limit accuracy is 0.5%. The NJM3770AD3 also provides a short-circuit protection with tracking current limit.

Application of the NJM3770AD3

The NJM3770AD3 is used primarily as a motor driver and controller in PMIC applications. It can be used in solar lighting systems, consumer electronics, and other applications requiring a high-current, step-down voltage converter. By taking advantage of its wide input voltage range and high efficiency, it can be integrated into a wide range of products.

Working Principle of the NJM3770AD3

The NJM3770AD3 takes an input voltage of up to 18V and converts it to a lower output voltage of up to 3.6V. The efficiency of the conversion is 95%. It uses a digitally controlled current mode architecture for its operation. This architecture provides a fast transient response, excellent integration, and a high level of accuracy. The wide-range analog gain control allows for fine-tuning of the current response and output current limit. The integrated transconductance amplifier provides low output noise. The switch current limit and short-circuit protection features help to protect the circuit against overloads.

Conclusion

The NJM3770AD3 is an excellent choice for PMIC digital motor driver and controller applications due to its high efficiency and fast transient response. Its wide input voltage and current range, high efficiency, wide-range analog gain control, and integrated transconductance amplifier make it a good option for any application requiring an accurate and efficient step-down converter.

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