LMR23625CFPQDRRTQ1

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:	2.1MHz
Current - Output:	2.5A
Voltage - Output (Max):	28V
Voltage - Output (Min/Fixed):	1V
Series:	Automotive, AEC-Q100, SIMPLE SWITCHER®
Voltage - Input (Min):	4.5V
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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LMR23625CFPQDRRTQ1 Application Field and Working Principle

The LMR23625CFPQDRRTQ1 is a DC-DC switching regulator from Texas Instruments. It is classified as a PMIC (Power Management Integrated Circuit) Voltage Regulator for DC–DC Switching Regulators. It is a DC-DC buck regulator which provides a maximum switching frequency of 2.2 MHz and a maximum output voltage of 3.3 V. It can support a wide input voltage range from 4.5 V to 36 V, making it suitable for a variety of applications. The internal circuitry includes a full set of control, current limit and thermal protection modules.

Overview

The LMR23625CFPQDRRTQ1 is a DC-DC switching regulator optimized for high efficiency applications. It has an adjustable voltage output and converter design which allows for a wide operating input voltage range of 4.5 V to 36 V and a wide output current range of 0.2 A to 3.5 A. It can be used for either continuous or discontinuous conduction mode (CCM/DCM) switching operation. The high power conversion efficiency is achieved by the use of a valley current balance control and a fast switching frequency of up to 2.2 MHz.

Operating Modes

The LMR23625CFPQDRRTQ1 can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) with only a few external components. CCM is used when the device is running in steady state at a constant output voltage, while DCM is used when the output is varying or fluctuating. It can also be used in pulse frequency modulation (PFM) mode, which offers higher efficiency and lower noise compared to CCM and DCM.

Control Input and Feedback

The LMR23625CFPQDRRTQ1 includes an enable input, a voltage feedback input and an output voltage feedback voltage divider. The enable input can be used to control the device on/off. The voltage feedback input can be used to adjust the output voltage, while the output voltage feedback voltage divider is used to measure the output voltage and provide feedback for the error amplifier.

External Circuitry

The LMR23625CFPQDRRTQ1 requires an external inductor and an output capacitor to construct a complete power supply system. The external inductor stores and releases energy in order to maintain a regulated output voltage. An output capacitor is used to reduce the output voltage ripple. The output capacitor also helps in reducing the load transients.

Features and Benefits

The LMR23625CFPQDRRTQ1 is a highly efficient, step-down voltage regulator operating at 2.2MHz switching frequency. It is designed to minimize external components and offer superior performance. The device features over-voltage protection, current limit protection, and thermal shutdown protection. It also offers input under voltage lockout (UVLO), as well as an adjustable output voltage range from 0.9V to 3.3V, allowing easy calibration of the output current. The device is ideal for a variety of applications, such as automotive, computing, industrial and consumer applications. It is available in a compact 10-pin SOIC package.

Conclusion

The LMR23625CFPQDRRTQ1 is a high-performance, low-power DC-DC switching regulator from Texas Instruments. It is designed to minimize external components and minimize losses associated with switching, while providing high efficiency and precise regulation. The device has a wide input voltage range and adjustable output voltage range, as well as protection features such as OVP, current limit and thermal shutdown. It is suitable for a variety of applications, such as automotive, computing, industrial and consumer applications.

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