LT3483AIDC#TRMPBF Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	-2.5V
Base Part Number:	LT3483
Supplier Device Package:	8-DFN (2x2)
Package / Case:	8-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	--
Current - Output:	340mA (Switch)
Voltage - Output (Max):	-38V
Series:	--
Voltage - Input (Max):	16V
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Charge Pump, Flyback
Output Configuration:	Negative
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

LT3483AIDC#TRMPBF is a high-efficiency, low-cost, DC-DC switching regulator that has a wide range of applications and can efficiently convert input voltages from just one to several volts. Moreover, it can be used as a low-noise, high-efficiency voltage regulator. Additionally, LT3483AIDC#TRMPBF provides great ease of use in both development and production by its small size, low component count, and high system cost saving. It can be used to provide voltage regulation in any system requiring current limiting and fault protection.

Application Field

The LT3483AIDC#TRMPBF can be used as a voltage regulator in a broad range of applications, including laptop and PC/notebook power supplies, networking devices, LED lighting power converters, power supplies for telecom equipment, solar power inverters and motor drivers. The efficient and low-noise design of the LT3483AIDC#TRMPBF makes it an ideal solution for applications that require high-efficiency voltage regulation and precise voltage control. Furthermore, it can be used to provide a precise regulated voltage that is stable and reliable, regardless of load fluctuations or other external factors. For example, in laptop and notebook power supplies, LT3483AIDC#TRMPBF can be used to provide a precise regulated output voltage, providing reliable power protection for sensitive electronics. In addition, the low-noise design of the LT3483AIDC#TRMPBF enables it to provide an exceptionally quiet operation for operations that require minimum noise levels, such as audio equipment or medical equipment.

Working Principle

The LT3483AIDC#TRMPBF operates on the principle of switching regulator, where the output voltage is regulated by changing the duty cycle of the output stage. It works in two distinct modes, Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM). When in PFM mode, the output voltage is regulated by adjusting the frequency of the output pulses. On the other hand, when in PWM mode, the output voltage is regulated by changing the width of the output pulses.The output voltage of the LT3483AIDC#TRMPBF is regulated by an on-chip voltage error amplifier. This voltage error amplifier provides precise control over the output voltage by monitoring the feedback voltage, comparing it to a reference voltage, and then adjusting the duty cycle of the output stage accordingly.The LT3483AIDC#TRMPBF also features a constant current limit and a low voltage lockout for protection against current surges or low input voltages, making it perfect for systems with unpredictable input and output conditions.

Conclusion

LT3483AIDC#TRMPBF is a high-efficiency, low-cost, DC-DC switching voltage regulator, ideal for applications that require efficient, reliable, and low-noise power regulation. Its wide range of applications, low component count, and high system cost savings make it ideal for use in a broad range of applications, including laptop and notebook power supplies, networking devices, LED lighting power converters, power supplies for telecom equipment, solar power inverters and motor drivers. Additionally, its on-chip voltage error amplifier, constant current limit and low voltage lockout provide the system protection and precise voltage control needed in these applications.

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