LM2940IMP-9.0

Current - Output:	1A
Base Part Number:	LM2940
Supplier Device Package:	SOT-223-4
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	64dB (120Hz)
Current - Supply (Max):	15mA
Current - Quiescent (Iq):	10mA
Series:	--
Voltage Dropout (Max):	1V @ 1A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	9V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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<ul> <li><strong>Introduction</strong></li></ul><p>The LM2940IMP-9.0 is a voltage regulator from Texas Instruments. It is a low dropout (LDO) linear regulator and part of their low-noise family of products. It is ideal for various industrial, medical, and automotive applications. It is designed to provide constant voltage output even under light load conditions, with an improved ripple rejection. It is capable of supporting as much as a 9A load.</p><ul> <li><strong>Application Field</strong></li></ul><p>The LM2940IMP-9.0 voltage regulator is suitable for use in several different fields. These include industrial machinery, automotive, and medical applications. The device is ideal for use in embedded systems where space is at a premium and efficient heat dissipation is necessary. Applications of the LM2940IMP-9.0 include powering low-noise devices such as power amplifiers, processor cores, FPGA cores, or embedded memory chips. As it is a low dropout regulator, the device can also be used in battery powered systems.</p><ul> <li><strong>Working Principle</strong></li></ul><p>The LM2940IMP-9.0 voltage regulator has a low dropout specification of 150mV at a 9A load. It has a wide operating temperature range of -40 &deg;C to +85 &deg;C. The regulator’s operation is based on the principle of series regulation, where the regulating element is a linear pass transistor in a feedback loop. The pass transistor is connected between the input and output terminals such that its voltage drop is proportional to the amount of current drawn by the load. This variation in the voltage drop is fed back to the regulating element, which adjusts the transistor’s base voltage accordingly in order to maintain the desired output voltage.</p><p>The LM2940IMP-9.0 voltage regulator is designed to ensure low noise operation. It has a high ripple rejection of 60dB and a low output voltage noise of 0.9 µVrms. The device is also provided with over-current and thermal protection features.</p><ul> <li><strong>Conclusion</strong></li></ul><p>The LM2940IMP-9.0 is an excellent choice for a voltage regulator for various industrial, medical, and automotive applications. Its low dropout operation and low-noise design make it ideal for powering low-noise sensors, amplifiers, or processors. Its wide range of features allows for efficient and reliable operation.</p>

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