NJM2845DL1-18-TE1

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The NJM2845DL1-18-TE1 Voltage Regulator is a member of the NJM2845 series of Low Drop-Out (LDO) linear voltage regulators.

This device is designed to keep the output voltage level precisely regulated, even when the load current changes or the input voltage fluctuates. It also has an excellent load and line transient performance, as well as providing superior noise performance.

NJM2845DL1-18-TE1 features an Output Voltage of 1.8V and a Maximum Output Current of 100mA, plus an Output Voltage Accuracy (1.25V to 2V) of ±1%. These parameters make the device very suitable for power management applications.

The NJM2845DL1-18-TE1 also provides wide Input Voltage range, from 1.25V to 17V, and includes a low dropout voltage of 650mV at maximum current and 30 μA typical ground current (sleep mode). It also offers an Internal Thermal Foldback that reduces the output voltage to maintain junction temperature during overload. The NJM2845DL1-18-TE1 is available in 4-pin SOT-23W package, with typical junction-to-ambient thermal resistance of 78 ℃/W.

The Working Principle of the NJM2845DL1-18-TE1 Voltage Regulator is based on a LDO design, with series pass configuration. It uses a P-channel MOSFET as the series pass element, together with a control circuit that regulates the voltage of the output. The control circuit compares the sensed output voltage with a bandgap voltage reference and adjusts the amount of current flowing through the MOSFET to achieve the desired output voltage level.

The NJM2845DL1-18-TE1 also utilizes a Bias Pin, which is connected to the input voltage and it provides bias for the control circuit and the MOSFET. The Bias Pin allows the device to operate at very low operating currents, it suppresses the MOSFET gate capacitance and also reduces the toll taken by the on-state voltage drop on the series pass element.

The NJM2845DL1-18-TE1 can be used in a wide range of applications, such as cellular phones, PDAs, digital cameras, and portable music players, as well as many other digital devices. It can also be used for the power supply for digital systems requiring a constant voltage level, such as direct digital synthesis (DDS) and PDAs.

The NJM2845DL1-18-TE1\'s excellent performance and low power dissipation makes it a great choice for battery powered devices where low current consumption is a priority.

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