Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LT3030IFE#PBF Application Field And Working Principle

LT3030IFE#PBF is a IC in the PMIC (Power Management IC) voltage regulator family and linear in particular,which relates to the management of circuits containing one or more power switches.The LT3030IFE#PBF is an ultra-low noise high current,low dropout linear regulator in an industry-standard 6-pin SOT-23 package.It delivers up to 3A switch current with a very high PSRR,low noise and fast transient response.The LT3030IFE#PBF is available in fixed output voltages from 1.3V to 5.5V,and can be used as an adjustable regulator for any output voltage from 0.825V to 5.5V.

Features:

• 0.84MHz switching frequency,suitable for small loop area
• Ultra-low noise efficiency optimized to avoid extra noise generation
• Fast transient response and soft start
• Industry-standard 6-pin SOT-23 package
• A variety of fixed output voltages from1.3V to5.5V.
• Robust overvoltage protection circuitry and over current protection
• Excellent PSRR 80dB (1kHz)

Application:

LT3030IFE#PBF is very suitable for many applications,including portable audio systems,battery powered electronics, mobile communication base stations and hand-held radios.In addition,it can also be used as an adjustable regulator for any output voltage from 0.825V to 5.5V.

Working Principle:

The LT3030IFE#PBF is based on a linear regulator design that uses an external PMOS switch as the power supply (to reduce noise in critical areas of the circuit),which works in parallel with a PNP transistor.The gate of the PMOS switch is controlled by an inner error amplifier,which is used to compare the output voltage and the reference voltage.When the output voltage is too low,the gate of the PMOS switch will open.When the output voltage is too high,the PMOS switch will be closed.This keeps the output voltage of the regulator at a near constant level.

To further reduce the noise produced by the linear regulator,LT3030IFE#PBF also includes an ultra-low noise efficiency optimized control circuit.This circuit senses the input and output voltages and adjusts its switching frequency accordingly.The lower the load current,the lower the switching frequency,and the less noise is produced.

In addition,the LT3030IFE#PBF includes a robust overvoltage protection circuitry and over current protection.It also has a fast transient response and soft start,which can reduce the input surge current and overshoot during startup.

In conclusion,LT3030IFE#PBF is an extremely practical ultra-low noise high current,low dropout linear regulator.Its wide range of output voltage,ultra-low noise efficiency optimized control circuit and many other features make it well-suited for a variety of applications.

The specific data is subject to PDF, and the above content is for reference