UC3823AN

Frequency - Switching:	400kHz ~ 1MHz
Base Part Number:	UC3823A
Supplier Device Package:	16-PDIP
Package / Case:	16-DIP (0.300", 7.62mm)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Current Limit, Frequency Control, Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	8.4 V ~ 22 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:	Active
Packaging:	Tube

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UC3823AN is a highly integrated PWM controller designed to operate as a DC-DC switching controller in a wide variety of applications, including switching power supplies, power factor correction, battery charge controllers and other digital multiplexer configurations. The device includes a number of features that provide excellent system performance and ease of use, such as voltage-mode control and the ability to configure external components quickly and easily.UC3823AN is offered in a 7-pin, or less-pin SOIC (small-outline integrated circuit) package for easy circuit integration and cost reduction. It can be easily configured for various application requirements and incorporates features such as an internal 5V band gap reference and on-chip over current protection. The device also includes an internal current sense amplifier and an oscillator, which greatly simplifies the external circuitry required to drive it. The UC3823AN has a wide operating voltage range and can be operated from 3V to 40V and current mode control up to 8A.One of the primary features of the UC3823AN is its ability to provide voltage mode control. It has two separate inputs that can be used to monitor either internally or externally generated error signals. The UC3823AN uses these error signals to adjust the duty cycle of its output in order to maintain a stable output voltage. The voltage mode control feature is extremely beneficial in high power applications as it offers improved transient response and eliminates the need for costly compensation components.The UC3823AN also features a slew rate control function that can be used to optimize loop response and minimize switching noise. This feature is particularly useful in applications where high performance is required but noise must be kept to a minimum. The UC3823AN also includes a soft start option which has the ability to slew the current at start up and avoid in-rush current. This feature is especially important in high power applications where the immediate on-load current surge can damage the power supply.Another important feature of the UC3823AN is its ability to generate a fixed frequency pulse width modulated (PWMD) output. The output is fed to an external MOSFET which is used to control the power applied to the load. The fixed frequency output prevents large fluctuations in the output voltage which can be damaging to sensitive loads.Overall, UC3823AN is an excellent device for DC-DC switching controller applications. It is well equipped to handle a variety of voltage control requirements and its features greatly reduce the complexity and cost of the system design. Additionally, the robust features make it an ideal choice for high power applications. With its excellent performance and ease of use, the UC3823AN is a cost effective solution for any type of power converters.

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