LP2952IMX-3.3

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Output Configuration:	Positive
Output Type:	Adjustable (Fixed)
Number of Regulators:	1
Voltage - Input (Max):	30V
Voltage - Output (Min/Fixed):	1.23V (3.3V)
Voltage - Output (Max):	29V
Voltage Dropout (Max):	0.8V @ 250mA
Current - Output:	250mA
Current - Quiescent (Iq):	170µA
Current - Supply (Max):	33mA
PSRR:	--
Control Features:	Enable
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	LP2952

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LP2952IMX-3.3 Application Field and Working Principle
The LP2952IMX-3.3 is a low-dropout (LDO) linear regulator in the form of a surface-mount device (SMD). It is part of the expanding family of linear regulators from Texas Instruments. This range of regulators is designed for high-precision voltage, current, and temperature control circuits. The LP2952IMX-3.3 is ideal for applications such as handheld devices, processors, microcontrollers, and FPGAs that require a precise output voltage in harsh environments.This regulator is designed to be used in applications that require a supply voltage range of 3.3V to 5.5V and an output voltage range of 0.9V to 4.3V. The LP2952IMX-3.3 is a very efficient device with its maximum efficiency of 97.5%. The output current of the device can be 1A and its input current of 12mA. The quiescent current of the device is typically 2.5mA. The device is offered in a small 8-TSSOP package (package size of 8mm x 8mm).Apart from being a low-dropout regulator, the LP2952IMX-3.3 also has ripple rejection of 57dB and dropout voltage of 400mV at 1A. It also has an integrated on-chip over-current and short-circuit protection circuitry. The device also has a thermal shutdown and output voltage monitoring with remote sensing.The working principle of the LP2952IMX-3.3 is based on a trans-conductance amplifier (Gm) error amplifier. It works by comparing the reference voltage to the feedback voltage and regulating the voltage to maintain the stability. The error amplifier is used to control the output voltage. When the output voltage falls below the reference voltage, the error amplifier pulls up the output voltage. The output current is then multiplied by a current sense resistor and the result is used to control the gate of the output NMOS transistor, thus regulating the output voltage.The LP2952IMX-3.3 is ideal for a number of low-power applications such as handheld devices, microcontrollers, and FPGAs. It is also suitable for applications that require accurate output voltage regulation in harsh environments. The device is also efficient enough for use in battery-powered devices. With its integrated on-chip protection circuitry, the device is reliable and can be conveniently used in a variety of applications.

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