LTC3874IUFD#TRPBF Allicdata Electronics
Allicdata Part #:

LTC3874IUFD#TRPBF-ND

Manufacturer Part#:

LTC3874IUFD#TRPBF

Price: $ 2.35
Product Category:

Integrated Circuits (ICs)

Manufacturer: Linear Technology/Analog Devices
Short Description: IC REG CTRLR BUCK 28QFN
More Detail: Buck Regulator Positive Output Step-Down DC-DC Co...
DataSheet: LTC3874IUFD#TRPBF datasheetLTC3874IUFD#TRPBF Datasheet/PDF
Quantity: 1000
2500 +: $ 2.13343
Stock 1000Can Ship Immediately
$ 2.35
Specifications
Frequency - Switching: 250kHz ~ 1MHz
Base Part Number: LTC3874
Supplier Device Package: 28-QFN (4x5)
Package / Case: 28-WFQFN Exposed Pad
Operating Temperature: -40°C ~ 125°C (TJ)
Control Features: Current Limit, Enable, Frequency Control, Phase Control
Serial Interfaces: --
Clock Sync: Yes
Synchronous Rectifier: Yes
Duty Cycle (Max): --
Series: PolyPhase®
Voltage - Supply (Vcc/Vdd): 4.5 V ~ 38 V
Output Phases: 2
Number of Outputs: 2
Topology: Buck
Output Configuration: Positive
Function: Step-Down
Output Type: Transistor Driver
Part Status: Active
Packaging: Tape & Reel (TR) 
Description

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LTC3874IUFD#TRPBF application field and working principle is a common topic in the field of PMIC - Voltage Regulators - DC DC Switching Controllers. The application field of the device covers a fairly wide range of areas, including: general-purpose industrial applications, automotive applications, power-supply control applications, lighting control applications and solar power applications. The working principle of the device is based on synchronous buck-mode topologies, which have the advantage of efficient power switching and excellent line-load regulation.The LTC3874IUFD#TRPBF is a16-pin SSOP packaged switching controller integrated circuit developed by the Linear Technology Corporation. It is targeted at the design of high-current, high-voltage synchronous buck power converters and features a wide range of protections, current regulation and Topology selection flexibility.The device has a minimum input voltage of 3.6V, Maximum output voltage of 5.5V and with a maximum output current of 60A. The device contains a fixed-frequency, current-mode architecture and its working principle is based on current-mode control techniques.The LTC3874-IUFD#TRPBF offers a wide range of features for controlling the output voltage, current and temperature of the power converter. Its controllers allow for switching frequency selection using external resistors, and it can switch frequencies from 200 kHz up to 2.2 MHz. It also incorporates an over-temperature and overtemperature alarm and a Temperature sensing circuit with positive and negative temperature coefficients. It also offers voltage clamping for protection against transients such as input and output over-voltage. The device also features an advanced compensation network to optimize the transient response across a wide range of supply and load conditions.To ensure reliable power conversion performance, the LTC3874-IUFD#TRPBF also contains an internal soft-start circuit which prevents over-stressing of power components. It also includes a unique Pulse-by-Pulse Over-Current Protection system which automatically limits peak currents and reduces power dissipation. The device also includes programmable spread-spectrum modulation, which helps to reduce EMI associated with high-current, high-efficiency buckpower supplies.When considering the use of the device for applications involving switching of loads, it is important to consider the inrush current and the amount of capacitance for proper sizing and selection of controller ICs. To ensure that the required Inrush current limit is met, the LTC3874-IUFD#TRPBF offers a wide range of Inrush Current limits from 0-60A in steps of 10A.In conclusion, the LTC3874-IUFD#TRPBF is a highly integrated switching controller IC suitable for a wide range of applications including general-purpose industrial, automotive, solar power and lighting applications. The device offers a number of features such as adjustable switching frequency, adjustable over-temperature and overcurrent protection, and a unique pulse-by-pulse over-current protection system. It is also suitable for use with a wide range of Capacitors and IGBTs and features advanced compensation network and programmable spread-spectrum modulation to reduce EMI. The device is offered in a 16-pin SSOP package, and is ideal for applications requiring high-current, high-efficiency synchronous buck power conversion with limited space and/or cost considerations.

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