NR119E

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NR119E Application Field and Working Principle

The NR119E is a Regulated DC-DC switching regulator belonging to the PMIC (Voltage Regulators, DC DC Switching Regulators) family. It is a monolithic IC designed to produce regulated outputs of 3.3 V and/or 5 V regulated DC power from an unregulated input source. It is suitable to supply various consumer type applications and many devices like CPUs, digital set-top boxes etc. The NR119E’s applications include consumer-type digital equipment, CPU power supplies, digital set-top boxes, portable CD players, etc.

Features and Benefits of the NR119E

The NR119E has several features that enable it to provide significant power savings and high efficiency. These include:

• Low power dissipation – The NR119E has low power losses, significantly improving overall power efficiency and saving power.
• High Efficiency – The NR119E has a peak efficiency of up to 90%, which improves power supply efficiency and reduces total system power losses.
• Wide Operating Input Voltage Range – The NR119E has an operating input range of 6V to 18V, making it suitable for a wide range of input supply sources.
• Current Limiting – The NR119E has built-in current limiting circuitry to prevent excessive current flow into the load.
• Wide Output Voltage Range – The NR119E can output regulated 3.3V and 5V outputs with a 4% accuracy.

Working Principle of the NR119E

The NR119E is a monolithic integrated circuit composed of power MOSFET’s, a comparator, an oscillator, a voltage reference, and a pulse-width-modulator (PWM). It utilizes a buck-converter configuration to step down the input voltage to a desired 3.3V or 5V output. The NR119E can also be used in boost-mode (step-up) applications to increase the input DC voltage. In either case, the NR119E utilizes a pulse-width-modulated (PWM) waveform to control the output voltage and current. The PWM waveform is generated by an on-chip oscillator and is compared to a voltage reference, usually a zener diode. When the voltage reference is reached, the comparator triggers and the MOSFET is turned off until it falls, restarting the cycle. This maintains a regulated voltage and current at the output. The output voltage is adjustable by changing the reference voltage.

Conclusion

The NR119E is an integrated circuit (IC) for voltage regulator applications. It belongs to the family of PMIC Voltage Regulators, DC DC Switching Regulators, and is suitable for a wide range of applications. The NR119E has several features that enable it to provide significant power savings and high efficiency. It utilizes a buck-converter configuration to step down the input voltage to a desired 3.3V or 5V output, and uses a pulse-width-modulated (PWM) waveform to control the output voltage and current. With its features and benefits, the NR119E is a great IC for voltage regulator applications.

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