LTC3621HMS8E-25#TRPBF

Voltage - Output (Min/Fixed):	5V
Base Part Number:	LTC3621
Supplier Device Package:	8-MSOP-EP
Package / Case:	8-VSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.25MHz
Current - Output:	1A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	17V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Voltage regulators, which are often referred to as DC-DC switching regulators, are a type of power management integrated circuit (PMIC) that can be used in a wide range of applications. The LTC3621HMS8E-25#TRPBF is a high efficiency, low voltage, buck regulator with an integrated high side switch. It is ideal for computing applications that require lower power consumption but need the flexibility of maintaining high output current performance.In this article, we will discuss the application fields and working principle of the LTC3621HMS8E-25#TRPBF.

Application Fields

The LTC3621HMS8E-25#TRPBF is a high efficiency, low voltage buck regulator with an integrated high side switch. It is ideal for computing applications that require lower power consumption but need the flexibility of maintaining high output current performance.The LTC3621HMS8E-25#TRPBF is suitable for a variety of applications, including notebook and netbook computers, tablets, media players, cellular and cordless phones, GPS units, personal communication systems (PCS) terminals, PDAs, and other hand-held or portable devices.The LTC3621HMS8E-25#TRPBF also can be used in hard disk drives. With its high efficiency, the LTC3621HMS8E-25#TRPBF can help reduce operating power consumption and increase power supply operating temperature range in applications such as ultra-slim PCs, notebooks, and consumer electronics.

Working Principle

The LTC3621HMS8E-25#TRPBF is composed of an NMOS switch, feedback, and control circuits. The switch is controlled by a buck converter. When the switching cycle is closed, the input voltage is applied to the input to charge the output capacitor. After the capacitor is fully charged, the output voltage reaches a level determined by the ratio of the feedback resistors.When the output voltage is not within the specified range, the built-in voltage feedback will detect the voltage error and adjust the desired output voltage based on the error. During this adjustment process, the NMOS switch will be turned on and off with an adjustable period to control the current flow through the output capacitor. The cycle voltage of the switch can be programmed with a control voltage.

Conclusion

The LTC3621HMS8E-25#TRPBF is a high efficiency, low voltage, buck regulator with an integrated high side switch. It is suitable for a variety of applications, including notebook and netbook computers, tablets, media players, cellular and cordless phones, GPS units, personal communication systems (PCS) terminals, PDAs, and other hand-held or portable devices. The LTC3621HMS8E-25#TRPBF is composed of an NMOS switch, feedback, and control circuits. During the adjustment process, the NMOS switch will be turned on and off with an adjustable period to regulate the current flow through the output capacitor. With its excellent performance, the LTC3621HMS8E-25#TRPBF is a great choice for various applications.

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