LP8340ILD-ADJ/NOPB

Current - Output:	1A
Base Part Number:	LP8340
Supplier Device Package:	6-WSON (2.92x3.29)
Package / Case:	6-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	55dB (120Hz)
Current - Supply (Max):	170µA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	9.3V
Voltage - Output (Min/Fixed):	1.25V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LP8340ILD-ADJ/NOPB Application Field and Working Principle

LP8340ILD-ADJ/NOPB belongs to Texas Instruments PMIC (Power Management IC) and Voltage Regulators product family. It is a high-efficiency, low quiescent current (IQ) synchronous buck regulator, specifically designed to provide a cost-effective solution for low-noise, fixed 3.3V output from a wide input voltage range of 4.5V to 28V. It is an adjusable version of the Fixed LP8340 regulator and is capable of delivering 0.6A of output current with no heat sink.The LP8340ILD-ADJ/NOPB can be used in applications such as communication, automotive, and industrial systems requiring adjustable output voltage with low quiescent current and high efficiency. The regulator\'s low quiescent current makes it ideal for battery powered applications that require long battery life. Its high efficiency makes it suitable for any application needing low power losses.

Working Principle

The LP8340ILD-ADJ/NOPB is a synchronous buck regulator with a peak current mode control scheme. It utilizes an external resistor to set the output voltage. The regulator\'s buck converter architecture uses two MOSFETs, arranged in a totem-pole configuration. The upper MOSFET, or high side MOSFET, switches the input voltage to ground in short bursts, allowing the inductor to store charge for the time period it is switched on. The lower MOSFET, or low side MOSFET, commands the release of this stored charge to the output capacitor and load. The output voltage is regulated by controlling the on and off times of the upper and lower MOSFETs.The LP8340ILD-ADJ/NOPB provides improved system reliability with current foldback protection, thermal protection and accuracy of the output voltage through its under voltage lockout feature. Its heavy-load transient response is improved by the input feed-forward circuit. Output voltage ripple can be minimized by using proper input and output capacitors.

Conclusion

The LP8340ILD-ADJ/NOPB is a high performance synchronous buck regulator specifically designed to provide a cost-effective solution for low-noise, adjustable 3.3V output from a wide input voltage range of 4.5V to 28V. The regulator\'s high efficiency and low quiescent current make it ideal for any application needing low power losses and long battery life. The under voltage lockout, current foldback protection, and thermal protection features make it an attractive option for communication, automotive, and industrial systems requiring adjustable output voltage. With its robust features, the LP8340ILD-ADJ/NOPB is an ideal choice for powering today\'s power requirements.

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