
Allicdata Part #: | LTC3642EDD-3.3#TRPBFTR-ND |
Manufacturer Part#: |
LTC3642EDD-3.3#TRPBF |
Price: | $ 2.35 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Linear Technology/Analog Devices |
Short Description: | IC REG BUCK 3.3V 50MA SYNC 8DFN |
More Detail: | Buck Switching Regulator IC Positive Fixed 3.3V 1 ... |
DataSheet: | ![]() |
Quantity: | 1000 |
2500 +: | $ 2.13343 |
Specifications
Voltage - Output (Min/Fixed): | 3.3V |
Base Part Number: | LTC3642 |
Supplier Device Package: | 8-DFN (3x3) |
Package / Case: | 8-WFDFN 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) |
Description
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LTC3642EDD-3.3#TRPBF Application Field and Working PrincipleLinear Technology Corporation (LTC®) LTC3642EDD-3.3#TRPBF is a 3.3V input synchronous buck regulator with output current capability up to 3A. It is designed for robust system power supply designs in mobile, telecom, automotive and IoT applications that require high power efficiency and compact size. The integrated high speed switches minimize power dissipation and simplify external components. It is also ideal for point-of-load (POL) applications. This article explains the application field and working principle of the LTC3642EDD-3.3#TRPBF. Application Field The LTC3642EDD-3.3#TRPBF is well suited for a variety of power management applications including mobile phones, tablets, notebook computers, telecom, automotive, IoT, and point-of-load (POL) applications. It also serves as an excellent choice for other energy-efficient applications such as solar panel, blue LED driver or home appliance. The device offers a wide Vin range from 2.3V to 5.5V and a well-controlled output voltage from 0.6V to 3.3V. The maximum output current is 3A with a switching frequency of up to 5MHz. Additionally, it provides programmable soft-start and low quiescent current shutdown mode for further power saving.Working Principle The LTC3642EDD-3.3#TRPBF uses a synchronous buck architecture to convert power from one voltage level to another. In this architecture, the input voltage is used to drive the switch and in turn converts it to an output voltage. This is done by switching the transistor switch at a high frequency to create a constant current path. This current is then used to charge a storage inductor, which will cause current scaling on the output side. The maximum switching frequency of this device is 5MHz. The device also offers several other features such as programmable soft-start, hiccup over-current protection, cycle-by-cycle current limiting, precision current sharing, external synchronization of the switching frequency, power-good indication and a low quiescent current shutdown mode. The soft-start feature eliminates surge currents usually associated with other current-mode dc-dc converters. The hiccup over-current protection helps keep the system safe during over-current conditions.All of these features allow for optimal system design and power management, making the LTC3642EDD-3.3#TRPBF an ideal choice for power supply and energy-saving applications.The specific data is subject to PDF, and the above content is for reference
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