LTC3621IDCB-25#TRPBF

Voltage - Output (Min/Fixed):	5V
Base Part Number:	LTC3621
Supplier Device Package:	6-DFN (2x3)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°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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PMICs (Power Management Integrated Circuits) are a type of semiconductor designed to minimize power consumption and increase overall efficiency. The LTC3621IDCB-25#TRPBF is a DC/DC switching regulator from Linear Technology and is part of their family of high-efficiency, step-down switching regulators. This device includes a low-side power MOSFET, a voltage reference and an internal voltage drop detect circuitry, allowing for applications with input voltage range of 2.5 to 22V, with a wide range of output currents up to 25A and a programmable frequency up to 1MHz. The LTC3621IDCB-25#TRPBF is mainly used for point-of-load (POL) power supply design or direct battery-powered supply applications. In addition, the device is designed to be high efficiency and low noise, making it ideal for general purpose motor and LED lighting applications, as well as low-noise dc-dc converter design. It is also suitable for asynchronous buck-boost operations and can provide up to 90% efficiency. In terms of its operating principle, the device operates by pulse width modulation. It receives a command signal that is used to regulate the output voltage. The signal controls the output voltage by varying the duty cycle of the pulses, creating a form of voltage regulation. The average output voltage is controlled by adjusting the on-time and off-time of the pulse width modulated signal. The LTC3621IDCB-25#TRPBF offers fast transient response as well as a wide range of external compensation options, allowing it to be used in a variety of applications. The device also includes a built-in current-limit circuit, further increasing its performance potential. In addition, the device’s internal voltage drop detect circuit provides an accurate current limit threshold, allowing the device to protect itself from over-current conditions. Conclusion In conclusion, the LTC3621IDCB-25#TRPBF is a high efficiency, low noise DC/DC switching regulator from Linear Technology. It is mainly used for point-of-load or direct battery-powered applications, offering high efficiency and fast transient response as well as a wide range of external compensation options. Furthermore, its internal voltage drop detect circuit provides an accurate current limit threshold, allowing the device to protect itself from over-current conditions. As such, it is a versatile and powerful device for a variety of applications.

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