L4940D2M5-TR Integrated Circuits (ICs)

Current - Output:	1.5A
Base Part Number:	L4940
Supplier Device Package:	D2PAK
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Temperature, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	68dB (120Hz)
Current - Supply (Max):	50mA
Current - Quiescent (Iq):	8mA
Series:	--
Voltage Dropout (Max):	0.9V @ 1.5A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	17V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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L4940D2M5-TR application field and working principle

The L4940D2M5-TR is a low-dropout (LDO) voltage regulator that provides excellent regulation in terms of voltage accuracy and power consumption, providing stable and reliable power supply for smart devices, including smartphones, tablets and other portable products. The L4940D2m5-TR is a highly efficient linear voltage regulator offering multiple features, including low output ripple, low operating current, and low dropout voltage. It has an adjustable output voltage that can range from 1.8 V to 5.0 V, adjustable with an external resistor reference according to the user’s needs. The device also comes with over-temperature protection, current competence and shut-down mode for improved system reliability. The device provides a wide input voltage window from 4V to 30 V, allowing it to be used in a variety of applications. The L4940D2M5-TR also features low power consumption, which allows it to operate efficiently in today’s highly competitive portable devices market. The L4940D2m5-TR is available as an 8-pin/8 pin/DFN package. It is a great choice for system designs that require a low-noise, low-power linear voltage regulator with excellent voltage accuracy and power consumption efficiency.

Working Principle

The L4940D2M5-TR is an adjustable linear regulator whose output voltage is set by an external voltage reference and voltage divider network. It works on the principle of error amplifier and output transistor as the current source. The output transistor acts as a current source. The error amplifier compares the output voltage with the reference voltage to adjust the amount of current required, thus being capable to maintain a stable output voltage. The L4940D2m5-TR features an integrated thermal foldback mechanism to protect the device from high junction temperature. It also features current limit protection, which enables the device to survive any high current event. The L4940D2m5-TR can be used in many applications, such as powering cellular phones, smart phones, tablet PCs, digital cameras, and many others.

Application Field

The L4940D2M5-TR offers multiple application fields where it can be used as a reliable and efficient power management solution, ideally complemented by an external voltage reference. The device is suitable for applications such as MP3 players, digital cameras, cell phones, PDAs and a variety of other digital electronics and smart devices. The device offers several advantages for portable electronics, such as excellent line and load regulation, low noise and high efficiency, enabling products to achieve maximum performance. In addition, the device can work within a wide input range and can handle a wide range of loads, thus making it suitable for many different types of applications.The L4940D2M5-TR can also be used in other applications such as automotive, telecom and industrial systems. With its excellent output voltage accuracy, low power consumption and robust protection features, the device provides an ideal power management solution for many different application fields.

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