LT3905IUD#TRPBF

Voltage - Output (Min/Fixed):	1.248V
Base Part Number:	LT3905
Supplier Device Package:	16-QFN (3x3)
Package / Case:	16-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	1MHz ~ 2MHz
Current - Output:	350mA (Switch)
Voltage - Output (Max):	65V (Switch)
Series:	--
Voltage - Input (Max):	12V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LT3905IUD#TRPBF is an integrated Power Management IC (PMIC) designed and developed by Linear Technology, which is a global leader in PMIC solutions. The PMIC is classified under Voltage Regulators, DC-DC Switching Regulators. The product is designed to provide a highly efficient, integrated solution for power management in a very small form factor, making it ideal for use in applications such as cellular phones, PDAs, handheld computers, digital cameras and game consoles.

Application Field

The LT3905IUD#TRPBF is primarily used in low power applications often found in portable products. It is an ideal solution for use in cellular phones, PDAs, handheld computers, digital cameras, game consoles and other applications where space is limited. The PMIC can deliver up to 5A of current and provide up to 1.4V output voltage for an input voltage range of 2.7V to 6V. The integrated solution of the LT3905IUD#TRPBF eliminates the need for external components and allows for very small form factor. This makes it ideal for space-constrained applications where a low cost, high efficiency device is required. Additionally, the PMIC also features a high-precision voltage tracking system, low quiescent current, low dropout voltage and a low-noise LDO regulator.

Working Principle

The LT3905IUD#TRPBF is a high-efficiency switching regulator. It consists of two main blocks: a high-efficiency buck-boost regulator and a high-precision voltage tracking system. The buck-boost regulator enables the device to deliver up to 5A of current from a wide range of input voltages and maintain precise output voltages over a wide range of temperatures. The high-precision voltage tracking system ensures that the output voltage remains constant and does not fluctuate due to changes in temperature and load variations. It utilizes the feedback pin to sense variations in input voltage and the voltage sensing pin to monitor changes in the load. This allows the device to maintain precise output voltage over the operating temperature range. The LT3905IUD#TRPBF can be used as either a single output or multiple output voltage regulator. The device also features a low-noise LDO regulator and low quiescent current, allowing it to be used in applications where power efficiency is important.

Conclusion

The LT3905IUD#TRPBF is a highly efficient and cost-effective integrated PMIC, classified under Voltage Regulators, DC-DC Switching Regulators. It is designed to provide a low power solution for applications such as cellular phones, PDAs, handheld computers, digital cameras and game consoles. The PMIC features a high-efficiency buck-boost regulator, a high-precision voltage tracking system and a low-noise LDO regulator. Additionally, it also has a low quiescent current and a low dropout voltage. With these features and its small form factor, the LT3905IUD#TRPBF is an ideal solution for power management in space-constrained applications.

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