UC3825 Datasheet

High Speed PWM Controller


The UC1825 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current- mode or voltage mode systems with the capability for input voltage feed-forward. UC3825 Features • Compatible with Voltage or Current Mode Topologies• Practical Operation Switching Frequencies to 1MHz• 50ns Propagation Delay to Output• High Current Dual Totem Pole Outputs (1.5A Peak)• Wide Bandwidth Error Amplifier• Fully Latched Logic with Double Pulse Suppression• Pulse-by-Pulse Current Limiting• Soft Start / Max. Duty Cycle Control• Under-Voltage Lockout with Hysteresis• Low Start Up Current (1.1mA)


[{"Name":"Maximum Operating Temperature","Value":"+ 70 C "},{"Name":"Minimum Operating Temperature","Value":"0 C"},{"Name":"Output Current","Value":"1500 mA "},{"Name":"Output Voltage","Value":"5 V to 5.2 V "},{"Name":"Switching Frequency","Value":"1000 kHz "},{"Name":"Rise Time","Value":"30 ns"},{"Name":"Fall Time","Value":"30 ns"},{"Name":"Number of Outputs","Value":"2 "},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information


ON Semiconductor - ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

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