LM2590HVT-3.3/NOPB

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	LM2590
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:	150kHz
Current - Output:	1A
Voltage - Output (Max):	--
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	60V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tube

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LM2590HVT-3.3/NOPB - Application Field and Working Principle

Overview

The LM2590HVT-3.3/NOPB from Texas Instruments is a high-performance, high-efficiency, easy-to-use DC/DC switching regulator, specifically designed for mobile communications and other power-sensitive applications. It is a member of the PMIC (Power Management Integrated Circuit) family of voltage regulators and as such is extremely useful in controlling the supply voltage to a variety of digital, analog, and system-level components.The LM2590HVT-3.3/NOPB is an impressive DC/DC switching regulator (or buck regulator) and forms the backbone of many power management designs. It is built with a high performance in mind, offering an appealingly wide input voltage range, allowing the LM2590HVT-3.3/NOPB to function with input voltages up from 3.1V up to as high as 20V. Furthermore, the LM2590HVT-3.3/NOPB provides designers with stability over various temperature ranges, with a powerful peak current capability, making it suitable for a wide variety of applications.

Features & Benefits

The potentially wide input voltage range is not the only admirable feature of the LM2590HVT-3.3/NOPB switching regulator, as it offers a number of capabilities which enable it to be used in a variety of applications:

• Wide input voltage range of 3.1V up to 20V
• High efficiency at all load conditions
• High power density for better thermal performance
• Adjustable output of up to 3.3V
• Output voltage ripple of less than 10mV
• Permanent short-circuit protection for external components

Applications

Given its extraordinary set of features, the LM2590HVT-3.3/NOPB is an ideal candidate for a variety of system-level applications, especially those dealing with power-management and mobile communications solutions. Some of the notable applications are:

• PCMCIA applications, such as chargers, adapters, radios, and retransmitters
• Smart phones, tablets, and handheld devices
• Communication systems, such as WLAN, GPRS, and DSL systems
• Servers and Telecom equipment
• Automotive infotainment systems

Working Principle

The LM2590HVT-3.3/NOPB implements the “buck” switching circuit topology for DC/DC conversion, a topology that is highly efficient and used in a variety of applications. In this topology, the LM2590HVT-3.3/NOPB first “buck” the input voltage to a lower voltage with the use of a power MOSFET switch. It then follows the current rectifying the voltage to its output form.In the LM2590HVT-3.3/NOPB, this process is implemented with the help of an external inductor, a power MOSFET switch, and an output capacitor, making it an ideal fit for a wide variety of circuit applications that do not require an extremely high frequency of operation. Furthermore, the LM2590HVT-3.3/NOPB implements pulse-width modulation (PWM) control to provide steady output voltage, despite variations in input voltage and load. Lastly, the LM2590HVT-3.3/NOPB also offers a wide input voltage range and adjustable output voltage, as well as low quiescent current and enabling low power dissipation independent of temperature, making it a good fit for low-power as well as high-power applications.

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