LT3992EUH#TRPBF

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LT3992
Supplier Device Package:	32-QFN (5x5)
Package / Case:	32-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	110kHz ~ 2.5MHz
Current - Output:	3A
Voltage - Output (Max):	57V
Series:	--
Voltage - Input (Max):	60V
Voltage - Input (Min):	3V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

LT3992EUH#TRPBF is a DC/DC buck regulator that offers an efficient, low noise and wide input voltage range for consumer and industrial applications. The device operates over a wide operating temperature range –40°C to 125°C or –40°C to 150°C. It also features internal high side and low side synchronous rectifiers which provide a high level of efficiency, making this an ideal solution for battery powered applications.

Application Fields

LT3992EUH#TRPBF is a highly customizable DC/DC buck regulator and is used in a wide range of consumer and industrial applications. It is a popular choice for portable and battery powered products such as tablets, mobile phones, wearables, IoT, laptops and activity trackers. Furthermore, it is also well-suited for industrial applications that require wide temperature ranges and high levels of accuracy.

Working Principle

The LT3992EUH#TRPBF works on a synchronous buck switching principle. The device converts a DC input voltage to a lower, regulated DC output voltage. The converter consists of an inductor, a low-side switch, a high-side switch, a diode, an output capacitor, and a control IC. The input voltage is applied to the input of the switches, and then a synchronous rectifier is used to convert the switched voltage into a regulated output voltage.The low-side switch controls the inductor of the converter, allowing it to store energy during the ‘on’ time. When the switch is turned off, the energy stored in the inductor is transferred to the output, via the diode. The output capacitor is used to filter the output voltage and maintain stable regulation, as well as to limit the ripple on the output voltage.The control IC is responsible for controlling the timing of the switches. It does this by monitoring the input and output voltage, and adjusting the on-time of the switches accordingly. The LT3992EUH#TRPBF also includes an internal compensation circuit, which helps reduce the overall size, cost and complexity of the design.

Conclusion

In summary, the LT3992EUH#TRPBF is a DC/DC buck regulator with wide input voltage range and internal synchronous rectifier. It is a highly efficient solution for a range of consumer and industrial applications, requiring wide temperature ranges and high levels of accuracy. The device operates on a synchronous buck switching principle, where energy is transferred from the inductor to the output voltage via the switches and diode, while the output capacitor is used to filter the output voltage and maintain stable regulation. The device is cost efficient, reliable and simple to use, making it the ideal solution for battery powered and portable applications.

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