LP2998MAE/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Converter, DDR
Voltage - Input:	2.2 V ~ 5.5 V
Number of Outputs:	1
Voltage - Output:	--
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	LP2998

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The LP2998MAE/NOPB is a Voltage Regulator of the Special Purpose category from Texas Instruments’ Power Management IC (PMIC) family. It is a low-dropout (LDO) linear regulator featuring excellent load and line regulation and low operating current.This device is designed for cost-sensitive applications such as portable and mobile devices, where better performance is required. Moreover, this device has high-accuracy output voltage, fast load transient response and most importantly low noise.The LP2998MAE/NOPB also integrates numerous features such as over-current protection, over-temperature protection and under-voltage lockout to ensure stable operation. In addition, the device includes a reference output (REFOUT) which can be used to minimize external resistor count.

Application Fields

The LP2998MAE/NOPB is suitable for the following applications:

• Battery-powered and wall-powered systems
• Computers and mobile devices
• Portable electronics
• Embedded systems
• Safety and industrial control applications

Working Principle

The LP2998MAE/NOPB is a low drop out voltage regulator, designed to regulate an input voltage down to the desired output voltage with minimal power consumption and low noise. The regulator works by taking in a range of input voltages and using a series of linear and switching regulators to regulate the output voltage.First, an internal switch is turned on, drawing a current into a capacitor, C1. This current is then passed through a resistor, R2, and into an error amplifier, U1. The output of the error amplifier is then compared to a voltage reference, U2. This comparison is then used to drive the switch so that a constant output voltage is maintained.The output voltage is then passed through a series of linear regulators, to regulate and filter it. This ensures a low noise and reliable output voltage free from noise.Finally, the output voltage is passed through a post-regulator, which maintains the set output voltage regardless of load changes. In summary, the LP2998MAE/NOPB is able to provide stable and reliable output voltage for a wide range of input voltages, with low power consumption, low noise, and fast transient response.

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