SI-8033JF

Voltage - Input (Max):	40V
Supplier Device Package:	TO-220F-5
Package / Case:	TO-220-5 Full Pack (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-30°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	125kHz
Current - Output:	1.5A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Series:	--
Voltage - Input (Min):	6.3V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

The SI-8033JF is a high performance, highly efficient, multipurpose switching regulator developed by ACN Technology, Inc. It is part of their PMIC - Voltage Regulators - DC DC Switching Regulators portfolio that provides an integrated solution for switch mode and power conversion products. The SI-8033JF has been designed to provide the highest level of integration and efficiency for many applications.

Application Field

The SI-8033JF can be applied in many different fields, from consumer electronics to automotive systems, and from industrial equipment to telecommunication devices. Its features make it suitable for many different applications, including:

• Converters for consumer electronics
• Battery chargers for mobile devices
• DC to DC converters for automotive systems
• Power supply for computers and industrial equipment
• Switch mode power supplies (SMPS) for consumer electronics and set-top boxes
• Telecommunication equipment
• Power amplifiers

Key Features

The SI-8033JF offers a wide range of features that make it suitable for many different applications. These features include:

• Ultra high efficiency operation: up to 95%
• High switching frequency: up to 500 kHz
• Integrated power MOSFETs
• Integrated hiccup current limit protection
• Internal compensator for fast transient response
• High current output: up to 6 A
• Output voltage adjustable from 0.9 V to 24 V
• Ultra wide input voltage range: from 1.8 V to 26 V
• Over voltage protection

Working Principle

The SI-8033JF operates in a constant current/constant voltage (CC/CV) mode to produce the desired output voltage. The device utilises a discontinuous conduction mode or DCM, combined with a constant on-time control or COT, to generate a regulated voltage on the output. In DCM mode, the voltage across the switch (the MOSFET) is constantly monitored and compared with a reference voltage. When the switch voltage exceeds the reference voltage, the switch is disabled and the current sensing block detects the current flow in the inductor and the output voltage is measured. If the output voltage is higher than the desired output then the current in the inductor is increased and the output voltage is adjusted accordingly. In COT mode, the MOSFET is enabled for a specific amount of time and then disabled for a specific amount of time, with the ratio of on time to off time remaining constant. This constant on time control helps to provide fast transient response and maintain the output voltage within the desired range.

Conclusion

The SI-8033JF is a high performance, highly efficient and multipurpose switching regulator. It offers an integrated solution for many different applications and its features such as ultra high efficiency operation and high switching frequency make it suitable for a wide range of applications, from consumer electronics to set-top boxes, and from automotive systems to telecommunication equipment. Its operating principle, based on DCM and COT modes, helps to ensure fast transient response and a stable output voltage.

The specific data is subject to PDF, and the above content is for reference