LM2588T-ADJ/NOPB

Voltage - Output (Min/Fixed):	1.23V
Base Part Number:	LM2588
Supplier Device Package:	TO-220-7
Package / Case:	TO-220-7 (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz ~ 200kHz
Current - Output:	5A (Switch)
Voltage - Output (Max):	60V
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	40V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost, Flyback, Forward Converter
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The LM2588T-ADJ/NOPB is a universal DC-to-DC buck voltage regulator, designed and optimized to provide true system level integration with a synchronous rectified high efficiency buck control topology and a robust high-side and low-side MOSFET with an integrated high-side current sense resistor. This voltage regulator can deliver up to 3.5A of output current at an adjustable output voltage from 1.235V to 37V, making it an attractive choice for applications that require low power, high efficiency and wide output voltage range.

Features

The LM2588T-ADJ/NOPB features several important features that make it the ideal choice for DC-to-DC buck switching regulators:• Adjustable Output Voltage: The LM2588T-ADJ/NOPB adjustable output voltage range is optimized for lower input voltages (up to 40V) and can be set using an external voltage divider.• High Efficiency: Due to its synchronous rectified high efficiency buck topology, the LM2588T-ADJ/NOPB delivers up to 95% efficiency. Power losses are minimized due to the low internal RDSon of the integrated MOSFETs, low gate drive voltage and ultra-low quiescent current.• Wide Input voltage Range: The LM2588T-ADJ/NOPB can operate with an input voltage range of 5V to 40V, which makes it suitable for automotive and industrial applications.• Low Standby Current: The quiescent current of the LM2588T-ADJ/NOPB is less than 1μA, which helps reduce system power consumption.

Application Field and Working Principle

The LM2588T-ADJ/NOPB is a DC-to-DC buck voltage regulator which can be used in a variety of applications where a low power, high efficiency and wide output voltage range are required. The adjustable output voltage range makes it suitable for automotive and industrial applications where reliable power is required such as at the laptop, cellular phones and other handheld devices.The heart of the LM2588T-ADJ/NOPB is a synchronous rectified buck converter which consists of two MOSFETs (a low-side MOSFET and a high-side MOSFET) and a current sense resistor which is integrated into the high-side MOSFET. The low-side MOSFET is used to switch the current in the inductor while the high-side MOSFET is used to regulate the output voltage. The current sense resistor provides feedback to the LM2588T-ADJ/NOPB to adjust the current in the inductor.During normal operation, the PWM signal is generated by the internal oscillator and applied to the gate of the low-side MOSFET. This causes the MOSFET to alternately turn on and off, creating a variable pulsed current flow in the inductor. The current sense resistor monitors the current flowing through the inductor, and passes its feedback signal to the LM2588T-ADJ/NOPB. The output voltage of the LM2588T-ADJ/NOPB is then adjusted to maintain the desired output voltage, and the PWM signal is adjusted accordingly.

Conclusion

The LM2588T-ADJ/NOPB is an advanced DC-to-DC buck voltage regulator which features a synchronous rectified high efficiency buck topology, integrated MOSFETs and a current sense resistor. It can deliver up to 3.5A of output current and has a wide input voltage range of 5V to 40V, making it suitable for automotive and industrial applications. The adjustable output voltage range allows for greater flexibility in system design. The low quiescent current and high efficiency make the LM2588T-ADJ/NOPB an attractive solution for low power, high efficiency and wide output voltage range applications.

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