LM2598T-3.3

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	LM2598
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):	40V
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Part Status:	Obsolete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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LM2598T-3.3

Introduction

The LM2598T-3.3 is a high-efficiency DC/DC switching regulator that is capable of delivering current up to 3A with a 3.3V fixed output voltage. This regulator also features a low quiescent current and has overvoltage protection. It is capable of regulating input voltages from 2V to 52V and can operate in either buck or boost mode. The LM2598T-3.3 is suitable for a wide range of applications, including general purpose voltage regulation, servo motor drive circuits, motor control modules, and power sources for microcontroller applications.

Application Field

The LM2598T-3.3 is ideal for a variety of applications, including:

• Industrial applications for powering servo motors and control circuits
• General purpose voltage regulation for various electronic components
• Battery powered applications that require a reliable 3.3V output voltage
• Automotive applications where the input voltage may range from 2V to 52V
• Portable devices that require a steady 3.3V output

Working Principle

The LM2598T-3.3 works by converting input voltage into regulated output voltage with the help of a switching transistor. The device is capable of working in both buck and boost mode, allowing it to generate either a higher or lower output voltage than the input voltage. In buck mode, the input voltage is converted to a lower regulated output voltage by charging a capacitor with the switched voltage. The voltage that is output is determined by the duty cycle of the transistor and the output current.In boost mode, the input is converted to a higher regulated output voltage by using an inductor to store energy. This stored energy is then used to drive the output current. The duty cycle of the switching transistor again determines the output voltage and current.Unlike linear regulators, switching regulators offer significantly higher efficiency and can provide much higher output currents.

Conclusion

The LM2598T-3.3 is a versatile DC/DC switching regulator that is capable of delivering current up to 3A with a 3.3V fixed output voltage. It can regulate input voltages from 2V to 52V and can operate in either buck or boost mode, making it suitable for a wide variety of applications. The working principle of this device involves the use of a switching transistor which converts the input voltage into regulated output voltage. Thanks to its low quiescent current, high efficiency and overvoltage protection, the LM2598T-3.3 is a reliable solution for high power applications.

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