LMR23615QDRRRQ1

Voltage - Input (Max):	36V
Supplier Device Package:	12-SON (3x3)
Package / Case:	12-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.425MHz
Current - Output:	1.5A
Voltage - Output (Max):	28V
Voltage - Output (Min/Fixed):	1V
Series:	Automotive, AEC-Q100, SIMPLE SWITCHER®
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction
The LMR23615QDRRRQ1 is a DC–DC switching regulator, which is a type of voltage regulator that operates by switching a large current on and off at a very high pace or frequency. This type of voltage regulator is particularly well known for its high efficiency, fast transient response, and high power density, making it valuable in a wide variety of applications. This article examines the application field and working principle of the LMR23615QDRRRQ1.

Application Field
The LMR23615QDRRRQ1 is well suited for designs where high efficiency and high power density are high priorities, such as in space- and weight-limited applications such as servers, laptops, cellphones, and tablets. It is also ideal for applications operating over a wide input voltage range, with an operating voltage range from 4.5V to 24V, and a regulation voltage range from 1.2V to 22V. This makes it applicable in industrial, automotive, and aerospace applications.

The LMR23615QDRRRQ1 has a very high peak efficiency of up to 97%, making it particularly effective in heavy-duty commercial and industrial applications. Furthermore, it offers current-mode control and integrated MOSFETs, as well as impressive protection features, including short-circuit protection, over-current protection, over-temperature protection, and under-voltage lockout. This makes it suitable for a variety of applications in a number of industries, including automotive, industrial, medical, and aerospace.

Working Principle
The LMR23615QDRRRQ1’s working principle consists of several stages. Initially, an external power supply is connected to the LMR23615QDRRRQ1, and the output voltage is connected to an external load. The LM236B15 part then detects the current in the output voltage using a voltage-mode control circuit, and adjusts the output voltage accordingly. This process is repeated thousands of times per second, ensuring a steady and accurate output voltage. One result of this process is that the output voltage can very accurately track changes to the load circuit, ensuring a high level of stability and accuracy.

Next, the LMR23615QDRRRQ1 combines a pulse width modulation (PWM) and a low dropout (LDO) regulator in order to deliver a consistent output power. The PWM acts as the main regulator by providing the voltage regulation while maintaining the switching frequency. The LDO is then used to regulate any remaining small fluctuations in the output voltage, resulting in a very accurate output voltage. The combination of these two regulators ensures excellent line and load regulations, as well as fast transient responses.

Finally, the LMR23615QDRRRQ1 also contains several protection features. These include over-current protection, Over-temperature protection, over-voltage protection and under-voltage lockout, as well as short-circuit protection. These features help protect the device from potential damage due to excessive operating conditions, and ensure a greater level of safety for the device.

Conclusion
The LMR23615QDRRRQ1 is a highly efficient DC–DC switching regulator that offers a variety of protections and fast transient response time. It is well suited for a wide range of applications such as servers, laptops, cellphones, and tablets, as well as heavy duty commercial and industrial applications. This makes the LMR23615QDRRRQ1 an excellent option for designers who require a dependable and effective voltage regulator.

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