LTC1437CG#TRPBF

Frequency - Switching:	Up to 400kHz
Base Part Number:	LTC1437
Supplier Device Package:	28-SSOP
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Power on Reset, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	3.5 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LTC1437CG#TRPBF Application Field and Working Principle

LTC1437CG#TRPBF is a general-purpose DC-DC switching controller produced by Linear Technology which is a well-known PMIC solution provider in USA. The switches and MOSFETs used in its circuits ensures small power losses and high efficiency in various applications. It is mainly used for DC to DC conversion, providing single subsystems with a regulated higher voltage from an input power source.This switching controller offers maximum flexibility in its design and architecture. It implements a single-power-rail system and the Buck-Boost mode of DC-DC conversion. Its features include both fixed frequency and programmable frequency operation, allowing its output voltage to be changed over a wide range. Its high frequency allows a small inductor to be chosen, thus leading to a compact, area-effective design.The LTC1437CG#TRPBF contains all the necessary functional blocks to implement the Buck-Boost DC-DC power conversion. Power switching is provided by two synchronous MOSFETs that are controlled by the Pulse Width Modulator (PWM) section. The duty cycle of the MOSFETs can be adjusted by the voltage sense and current sense inputs of the PWM section, thus providing a means to adjust the voltage and current output according requirement. As with linear regulators, the duty cycle can be optimized for various applications by modifying the feedback loop in the PWM section of the device.Also, the LTC1437CG#TRPBF includes several protection features which ensures safe operation of the device. The input voltage is monitored along with the input current for over-current and short-circuit protection. Similarly, the output voltage and current are monitored to provide over-voltage, over-current and short-circuit protection.The LTC1437CG#TRPBF has several applications in the field of embedded systems, including portable and desktop electronics, industrial, communication and datacom systems, automotive, as well as in precision power supplies. It is commonly used in power supplies for telecom equipment, small system power solutions, memory voltage regulators, audio amplifiers, and EPROM programmers.Overall, the LTC1437CG#TRPBF is a high-performance, general-purpose switching controller. Its wide range of features and protection certainly make it a good choice for various power solutions. This part is an excellent choice for designers who require flexibility, high efficiency, and easy implementation of Buck-Boost DC to DC conversion. It is certain that it will remain a popular choice for many years to come.

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