LP5900SDX-1.5

Current - Output:	150mA
Base Part Number:	LP5900
Supplier Device Package:	6-WSON (2.2x2.5)
Package / Case:	6-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	85dB ~ 40dB (100Hz ~ 100kHz)
Current - Supply (Max):	230µA
Current - Quiescent (Iq):	50µA
Series:	--
Voltage Dropout (Max):	0.15V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.5V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LP5900SDX-1.5 Application Field and Working Principle of Linear Voltage Regulators

Linear Voltage regulators are a type of power management integrated circuit, commonly referred to as PMIC. They are primarily used to monitor, regulate and control the input of power to electrical and electronic systems. The LP5900SDX-1.5 is a high performance, low noise linear voltage regulator made specifically for mobile and computing applications. Here we will discuss the application field and working principle of this voltage regulator.

Application Field

The LP5900SDX-1.5 is primarily designed to provide 3.3V regulated power for PC motherboards, datacom and telecom devices, voltage regulators for notebook computers, power management in cell phones, cellular base stations and any other device where precise low noise power is required. It is also used to provide a stable power source to the power amplifier in amplifiers, audio systems and sound cards, avoiding power supply noise and interference.

Working Principle

The LP5900SDX-1.5 voltage regulator uses a simplified stability control technique in combination with a low noise voltage reference circuit. The device is also equipped with an integrated low power level shifter, which allows the input voltage to be up to 18V. It then uses a negative feedback loop to stabilize the output voltage and reduce any ripple noise.The LP5900SDX-1.5 features a built-in voltage folding circuit to reduce any power disturbances, as well as protection against reverse current, short circuit and overvoltage conditions. It also features a low dropout voltage and current limiting, making it suitable for use in high frequency applications.

Conclusion

The LP5900SDX-1.5 is a low noise linear voltage regulator that is designed for mobile and computing applications. It features a built in voltage folding circuit, reverse current protection and current limiting. It is also equipped with an integrated low power level shifter, allowing it to be used with up to 18V input voltages. This makes it an ideal choice for providing stable power sources in audio systems, amplifiers, sound cards and other devices that require low noise power supplies.

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