LTC3636EUFD-1#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Adjustable
Number of Outputs:	2
Voltage - Input (Min):	3.1V
Voltage - Input (Max):	20V
Voltage - Output (Min/Fixed):	0.6V
Voltage - Output (Max):	5V
Current - Output:	6A
Frequency - Switching:	Adjustable
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	28-WFQFN Exposed Pad
Supplier Device Package:	28-QFN (4x5)
Base Part Number:	LTC3636

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Application Field and Working Principle of LTC3636EUFD-1#TRPBF

The LTC3636EUFD-1#TRPBF is a 24V, 4A synchronous step-down DC/DC switching regulator that is classified as a PMIC (Power Management IC) Voltage Regulator, specifically a DC DC Switching Regulator. It is available in the 8-pin DFN package with exposed pad, making it a suitable solution for point-of-load applications.The LTC3636EUFD-1#TRPBF offers adjustable output voltages of 0.6V to 22V and a switching frequency of 300 kHz. It also features an integrated power switches with a peak current rating of 6.5A and a minimum on-time of 40ns. This enables the LTC3636EUFD-1#TRPBF to deliver high efficiency and power density while operating over broad load and supply voltage ranges.The LTC3636EUFD-1#TRPBF has been designed with a purely synchronous design. This removes the need for an output diode, resulting in improved light load efficiency and better thermal performance. Its programmable constant on-time (COT) current-mode architecture ensures fast transient response and low noise.The LTC3636EUFD-1#TRPBF can operate in both fixed frequency and Constant On-Time (COT) current-mode, so users can select the most appropriate approach for their application. The device also features internal soft start, integrated LDO, low output ripple and adjustable output current limit for safe start-up and steady state operation.The LTC3636EUFD-1#TRPBF provides reliable, low noise operation and high efficiency over the entire load current range when configured for operation in Constant On-Time (COT) current-mode. The device has a feedback loop architecture and relies on two main parts to regulate output voltage: the power switch and the error amplifier.The power switch is an n-channel MOSFET with a peak current limit that turns on and off rapidly to discharge or charge the output capacitor. The error amplifier monitors the output voltage and compares it to an internal reference voltage and adjusts the power switch duty cycle accordingly to maintain the output voltage in regulation.The soft start feature of the LTC3636EUFD-1#TRPBF helps protect the device from inrush currents due to load capacitance. It also prevents output droop on the ramp-up of load current. The integrated low dropout (LDO) regulator helps reduce power dissipation and provides a clean output for loads that require it.The LTC3636EUFD-1#TRPBF is well-suited for distributed power systems, battery-powered systems, consumer devices, and other applications where high efficiency and power density are critical. It offers adjustable output voltages, integration of features, low noise operation, and low output ripple, making it ideal for digital power applications.

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