Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LT3506
Supplier Device Package:	16-TSSOP-EP
Package / Case:	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	575kHz
Current - Output:	1.6A
Voltage - Output (Max):	23.25V
Series:	--
Voltage - Input (Max):	25V
Voltage - Input (Min):	3.6V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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LT3506IFE#PBF Application Field and Working Principle

Introduction

The LT3506IFE#PBF is an high-performance, DC/DC switching regulator with a maximum power output of 4W. This DC/DC regulator provides a variety of solutions for power system design, and offers high degree of flexibility and efficiency. It can offer a wide output voltage range, and comes with wide selection of options for its output current. As such, the LT3506IFE#PBF is used for a wide range of applications, such as portable device power supplies and automotive power supplies. The LT3506IFE#PBF features robust power transistor design features, such as built-in protective devices and an integrated soft-start current-limit protection. Its high efficiency and low noise operation make it well suited for noise sensitive power applications.

Application Field

The LT3506IFE#PBF is ideal for a variety of applications, especially those requiring low noise and high efficiency. It is regularly used in portable device power systems, such as notebook PCs, PDAs, and MP3 players. The DC/DC switching regulator is also suitable for automotive power supplies, providing reliable, efficient power solutions for various automotive needs. In addition, the LT3506IFE#PBF is popularly used in mobile phone base station power systems and telecom power supplies, LED backlight applications, and industrial power supplies. It is also compatible with a wide variety of input sources, such as USB and automotive battery inputs.

Benefits

The LT3506IFE#PBF provides numerous benefits for system design. First, the DC/DC regulator has a wide input voltage range, allowing it to be used with almost any input voltage source. It is also designed to provide high efficiency with minimal power loss, helping to reduce system design costs and improve overall performance. The integrated soft-start current-limit protection and robust power transistor design features ensure maximum reliability and reduce power supply design time.The LT3506IFE#PBF also features several output configuration options. It can be configured with up to four high-current synchronous or diode-rectified outputs, allowing it to meet almost any output current requirement. Furthermore, output regulation is provided with a selectable low voltage (25mV) programmable reference. Finally, the IC provides an integrated pre-bias start circuit to simplify design of power supplies during cold start operation.

Working Principle

The LT3506IFE#PBF is a current-mode switching regulator. This type of regulator utilizes an internally generated high-frequency square wave to control the current flowing through the switching elements, thus reducing losses and improving efficiency. The switching operating frequency of the LT3506IFE#PBF can be adjusted through an external resistor, allowing for efficient operation over a wide input voltage range. The LT3506IFE#PBF utilizes pulse-width modulation (PWM) to regulate the output voltage. The IC senses the output voltage, and adjusts the duty cycle of the switching signal accordingly. The output voltage ripple is reduced through an integrated filter capacitor or an external filter. The LT3506IFE#PBF also features over voltage protection, which prevents undesirable output voltage overshoots. It is capable of operating up to 4 A, making it suitable for a wide range of power systems. The IC is also designed with an integrated soft-start and current-limit protection, providing the system with additional surge protection and improved reliability.

Conclusion

The LT3506IFE#PBF provides a wide range of features and benefits, making it suitable for a variety of applications. Its high efficiency, low noise levels, robust power transistor design features, and wide input voltage range make it an ideal solution for various power supply systems. Moreover, the LT3506IFE#PBF offers various output configuration options, allowing it to meet a wide range of output current requirements. Finally, the LT3506IFE#PBF is based on a current-mode switching regulator, and utilizes an internal high-frequency square wave to control the flow of current, thus providing high efficiency and improved performance.

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