UC28023N

Frequency - Switching:	340kHz ~ 460kHz
Base Part Number:	UC28023
Supplier Device Package:	16-PDIP
Package / Case:	16-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 105°C (TA)
Control Features:	Current Limit, Enable, Frequency Control, Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	90%
Series:	--
Voltage - Supply (Vcc/Vdd):	9 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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The UC28023N is a high-performance current-mode DC to DC switching controller from Microchip, providing advanced wide input voltage range operation and superior system level performance. This device is designed to provide smooth, continuous power conversion to provide the highest efficiency within a broad range of applications. Designed to operate in both forward and buck conversion modes, the UC28023N offers robust boost and synchronous buck input regulation, as well as superior transient load tracking with fast load steps. Additionally, the device provides excellent protection features, including input under-voltage protection, output over-current protection, and output over-voltage protection.

The UC28023N is ideal for use in automotive, industrial, and consumer applications. Automotive systems require high reliability and performance, while consumer applications have strict requirements for power efficiency. Industrial requirements typically involve energy efficiency, functionality, and cost. The UC28023N is designed to satisfy all of these requirements and meet the highest standards for quality, performance, and reliability.

The UC28023N functions as a DC to DC switching controller. It is an on-chip regulator, efficiently controlling the transfer of power from one voltage source to another. The device is configured to connect an input voltage to the output, regulating the voltage and current settings through an external feedback network. The UC28023N supports the following operating modes:

• Forward Converter Mode: The UC28023N provides dynamic current-mode control of a forward converter, allowing it to quickly respond to load variations as well as changes in input and output voltage.
• Buck Converter Mode: The UC28023N provides dynamic current-mode control of a buck converter, providing an output voltage that is adjustable down to 0.8V.
• Boost Converter Mode: The UC28023N provides adjustable output voltage, allowing it to operate as a boost converter. It can also be used to generate high output voltages for low input voltage applications.
• Synchronous Buck Converter Mode: The UC28023N\'s synchronous buck converter mode can provide high efficiency with low output voltage ripple.

The UC28023N is protected from various fault conditions by several integrated protection features. It has an adjustable input under-voltage protection, which prevents the transfer of power when the input voltage is below a certain threshold. It also has an adjustable output over-current protection feature, which monitors the output current of the regulator and trips when it exceeds a preset level. Additionally, the device is equipped with an adjustable output over-voltage protection which temporarily disconnects the load from the output voltage when the voltage rises above a specified level.

The UC28023N is packaged in a thermally enhanced and low profile 8-lead SOIC package, making it suitable for a variety of regards. The device is designed for low-noise operation and a wide temperature range, ranging from -40°C to +125°C. Additionally, this device has low quiescent current operation and high efficiency, making it suitable for both battery-operated applications and other power management tasks.

Overall, the UC28023N is a high-performance current-mode DC to DC switching controller. It is designed to provide both high efficiency and robust protection features, while also providing low-noise operation and wide temperature range support. This makes the UC28023N an ideal choice for a variety of automotive, industrial, and consumer applications.

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