IR3637ASTRPBF

Frequency - Switching:	600kHz
Base Part Number:	IR3637ASPBF
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 125°C (TJ)
Control Features:	Enable, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	76%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 5.5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to IR3637ASTRPBF IR3637ASTRPBF is a highly efficient DC-DC switching controller with integrated $MOSFETs that allows for a wide range of applications and control schemes. It is a fully integrated 3-channel controller featuring 4-phase buck-boost control, peak current detection, integrated overcurrent protection, and overvoltage protection on the load side. The IR3637ASTRPBF is well-suited for the industrial, automotive and telecommunications applications.Application Field The IR3637ASTRPBF is designed for use in a number of fields and applications such as power supplies for processors, server systems, and other systems requiring high efficiency and low noise. It is suitable for 12V to 24V industrial and automotive equipment, as well as telecom back-up power supplies. Its low quiescent current allows itself to be used in a wide range of power supply designs, including LED lighting and network router applications. The IR3637ASTRPBF is also well-suited for battery-operated equipment, where low power dissipation is critical.Working Principle The IR3637ASTRPBF is a switched-mode power supply (SMPS) controller. It uses an internal buck-boost controller to keep the output voltage at a desired level, regardless of fluctuations in the input voltage. The peak current mode control allows for fast and accurate response to load changes. The IR3637ASTRPBF features a number of protection features, including overcurrent and overvoltage protection, as well as thermal shutdown.The IR3637ASTRPBF is designed to optimize the efficiency of the power supply using average current mode control (AMC). This helps to reduce switching losses and heat dissipation while maintaining a stable output voltage. The high current-sense accuracy allows for accurate current measurement and setting the constant voltage at the output, even under varying load conditions. The overcurrent protection is also able to provide protection to the load and power supply. The IR3637ASTRPBF can be customized with programming and configuration options such as output voltage, overvoltage protection, soft-start, and power-good delay. The programming pin allows for dynamically adjusting certain parameters to optimize the power supply performance for specific requirements. Conclusion The IR3637ASTRPBF is a powerful and versatile DC-DC switching controller which can be used in a wide range of applications and control schemes. Its on-chip MOSFET drivers, peak current detection, and integrated protections make it a perfect choice for industrial, automotive, and telecommunication applications. The average current mode control and programmable features help to optimize the performance for specific requirements.

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