LP5996SD-3308

Current - Output:	150mA, 300mA
Base Part Number:	LP5996
Supplier Device Package:	10-SON (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	58dB ~ 45dB, 70dB ~ 60dB (1kHz ~ 20kHz)
Current - Supply (Max):	170µA
Current - Quiescent (Iq):	110µA
Series:	--
Voltage Dropout (Max):	0.22V @ 150mA, 0.55V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V, 0.8V
Voltage - Input (Max):	6V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The LP5996SD-3308 is a type of linear voltage regulator integrated circuit manufactured by Texas Instruments. It is a low-cost, low-noise and high-efficiency solution for monitors and notebooks, regulated DC-DC converters, and other applications. It features up to 0.5 MHz of integrated frequency response and its high efficiency can reach 90% or better.

Application Field

The LP5996SD-3308 is ideal for use in low power and high speed switching applications. It is ideal for DC-DC step-down or buck converters and voltage regulators. It supplies an adjustable output voltage from 1.3V to 20V, and up to 500mA of output current. Its maximum operating frequency of 500 kHz enables the device to convert power with very low losses and minimal external components. The LP5996SD-3308 is also capable of providing very fast transient response times and excellent load transient performance, ensuring proper system supply sequencing and sequencing without hold up time.

Working Principle

The LP5996SD-3308 uses a linear regulator architecture to regulate voltage. In such a regulator, a DC-DC converter generates an output voltage linearly with respect to an input voltage. It employs an error amplifier to compare the reference voltage with the actual output voltage and adjusts the output accordingly. The feedback loop is used to maintain the output voltage at a constant level.The LP5996SD-3308 employs a current-mode control scheme to provide high precision and fast-acting response to input and output voltage fluctuations. The current-mode PWM control provides better regulation accuracy, regulation speed and dynamic performance with heavy load transients. The device is current limited and can shut down if the output current reaches the current limit, protect the system from current over-draw or excessive voltage discrepancy.

Features and Benefits

The LP5996SD-3308 brings ultra-high efficiency and high frequency performance. Its 0.5MHz frequency response and high efficiency allows for highly efficient and smaller power solutions. The LP5996SD-3308 also offers an extended range of output voltage and current limit capabilities. The device can be used in a wide range of applications, ranging from entering-grade notebook and monitor applications to regulated DC-DC converter solutions.The LP5996SD-3308 offers a wide range of capabilities such as adjustable output voltage, zener diode protection, fixed and adjustable enable functions, over-temperature shut-down, over-current protection, as well as low dropout performance due to its low output current proportional drop. It also features repetitive Crowbar and Overvoltage Protection to prevent potential short circuit in case of overvoltage conditions.

Conclusion

The LP5996SD-3308 offers a highly efficient and feature-rich solution for applications requiring low power and high speed switching. Its features make it ideal for step-down or buck converters and voltage regulators ranging from entry-level notebooks and monitors to regulated DC-DC solutions. The current-mode PWM control ensures high regulation accuracy, regulation speed, and load transient performance while the wide range of features offer extended protection and operating range. The ultra-high efficiency, high frequency response and low dropout performance also make this device an excellent choice for low power solutions.

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