LP2989AILD-3.6/NOPB

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The LP2989AILD-3.6/NOPB is classified under the Power Management IC (PMIC) –Voltage Regulators –Linear category. It is an ultra-small 3.6V Linear Low Dropout (LDO) Regulator and is available in DFN-12 packages. The junction temperature range for this device is from -45°C to 125°C.

The LP2989AILD-3.6/NOPB offers a wide output current range of 6mA to 140mA, adjustable using only one external resistor. It also features an ultra-low dropout voltage of only 270mV at 140mA and an adjustable output voltage range of 2.2V to 3.6V. Due to its small size and low dropout voltage, this device is perfect for small form factor portable devices. Moreover, it employs active reverse current protection, which helps to prevent reverse current through the devices when the battery voltage drops.

When using the LP2989AILD-3.6/NOPB, it is important to consider the maximum power dissipation, supply voltage range, load regulation, and input/output capacitor selection. The maximum power dissipation of this device is 1.1W for the TO-263 package and 150mW for the DFN package. The supply voltage must be between 5V and 24V and there is a load regulation of 10mV from 10mA to 1A. The input and output capacitors must be stable, like ceramic capacitors, and the minimum ESR for output capacitor is 5Ω. This device also includes thermal shutdown protection and inrush current limit to ensure safe and reliable operation.

In terms of application fields, the LP2989AILD-3.6/NOPB is widely used for providing stable, low noise and low dropping voltages to a variety of portable electronics devices, such as digital cameras, personal digital assistants (PDAs), PCMCIA cards, cellular phones and portable media players. It is also widely adopted and accepted in industrial applications, such as industrial intercoms and medical systems.

The LP2989AILD-3.6/NOPB operates on the basic principles of a linear regulator, which is essentially a voltage-feeding device. In a linear regulator, a reference voltage, created by either an external voltage divider or an on-chip bandgap reference, is compared to the input voltage, and error correction is then carried out. The difference between the reference and input voltage is commonly referred to as the error voltage, which results in the control current. The control current is then used to control the output voltage via a pass element.

More specifically, the LP2989AILD-3.6/NOPB features an internal error amplifier, a PMOS pass element, and a set of Propagation Delay Trim (PDT) voltage compensation resistors. The internal error amplifier compares the reference voltage with the input voltage and generates the appropriate control current. The control current is fed to the P-channel MOSFET, which then regulates the output voltage of the device. The PDT resistors are then used to trim the amplifier\'s gain to compensate for output voltage drift and to ensure stability. This ensures that the LP2989AILD-3.6/NOPB will provide a stable, low dropout and low noise output voltage.

The LP2989AILD-3.6/NOPB is a well-rounded linear regulator, providing exceptional performance, high efficiency and low power dissipation. With its ultra-small size, it is perfect for applications requiring space-saving packages, making it an ideal choice for portable and industrial applications. This makes the LP2989AILD-3.6/NOPB a great choice for applications requiring a stable, low noise and low dropout voltage.

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