LTC3642IMS8E-3.3#TRPBF

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	LTC3642
Supplier Device Package:	8-MSOP-EP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	--
Current - Output:	50mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	45V
Voltage - Input (Min):	4.5V
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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The LTC3642IMS8E-3.3#TRPBF is a member of DC-DC Switching Regulators, commonly referred to as PMIC or Power Management IC. The device from Linear Technology provides adjustable or fixed output voltage from 1.25V to 5.5V, allowing power supply designers to provide the standard operating voltages for their systems. The robust high-efficiency power conversion capabilities of the LTC3642IMS8E-3.3#TRPBF provide a great solution for consumers who require reliable and efficient power supply systems.The LTC3642IMS8E-3.3#TRPBF is an integrated, high-performance, voltage-mode DC-DC converter. It offers a wide range of features that make it ideal for a variety of applications. The LTC3642IMS8E-3.3#TRPBF features include a wide input common voltage range of 1.6V to 6V, adjustable output voltage from 1.25V to 5.5V, up to 2.6A output current, and an adjustable switching frequency. The device also benefits from a very low noise voltage sensitive reference, which further improves power supply design efficiency. The output voltage can be adjusted via a single external resistor, which simplifies the overall design of the circuit.The LTC3642IMS8E-3.3#TRPBF utilizes a synchronous bridge rectifier to convert AC Input voltage to DC voltage, thereby enabling efficient power conversion. This is accomplished by using a pair of transistors, one each connected to each of the four corners of the full-wave rectifier circuit. As the AC input voltage is applied across two of the four transistors, the other two will default to a "reverse-blocking" state. This action synchronizes the operating parameters of the two transistors, allowing for efficient power conversion when the WVIN voltage is at its peak.The LTC3642IMS8E-3.3#TRPBF also features an integrated Voltage-mode Control Loop, which is used to maintain output voltage accuracy across a wide range of input and output voltages. The loop is composed of a Pulse Width Modulation (PWM) topology and a voltage sense amplifier, which monitors the output voltage and adjust the on-time of the internal high-side and low-side FETs to maintain the output voltage at the desired level. As the output voltage increases, the on-time is decreased until it reaches the desired target, and vice versa.The LTC3642IMS8E-3.3#TRPBF also has a low standby current of only 5uA, which helps make the device more efficient. To further improve efficiency, the device also includes internal compensation circuits, including an optimized frequency compensation network that allows a very accurate output voltage regulation at any given output current.The LTC3642IMS8E-3.3#TRPBF from Linear Technology is an ideal choice for applications requiring an integrated DC-DC converter with adjustable or fixed output voltage for power conversion. The device offers excellent efficiency with a wide range of features, such as a low noise voltage sensitive reference, adaptive on-time control, and integrated compensation circuits. Such features make this device a great choice for applications that require reliable, efficient power conversion solutions.

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