UC3823DWG4

Duty Cycle:	100%
Base Part Number:	UC3823
Mounting Type:	Surface Mount
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Frequency Control, Soft Start
Fault Protection:	Current Limiting
Frequency - Switching:	1MHz
Series:	--
Voltage - Supply (Vcc/Vdd):	8.4 V ~ 30 V
Voltage - Start Up:	9.2V
Topology:	Boost, Buck, Flyback, Forward
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	Non-Isolated
Part Status:	Active
Packaging:	Tube

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UC3823DWG4 is a high performance pulse width modulation (PWM) energy controller used to control switching power supplies. It is part of the PMIC (Power Management Integrated Circuit) family of products, and specifically falls into the AC DC Converters, Offline Switchers category.This device can be used with varying power levels from light-load switching power supplies up to 10 Watt devices. It includes self-protection features against latched and auto-restart modes for over-voltage and over-current conditions for simple device use and protection of the output load.The UC3823DWG4 provides a wide range of power-management integrated circuits with various features, enabling various implementations and is optimized to deliver maximum efficiency and reliability. Its operating parameters are guaranteed over a temperature range of -40?C to +85?C and is competent in operating up to 1.2MHz operation.This device can be used in applications such as off-line switch-mode power supplies (SMPS) and DC to DC converters. It can also be used as a motor speed control such as in fresheners, fans and pumps.The UC3823DWG4 device runs off of a 5V-20V power supply and contains a control circuit, on-board reference and opto-coupler interface. It makes use of an on-board operational amplifier to accurately measure output voltage from the power supply and gives feedback to an error amplifier and to the pulse width modulator, thereby providing perfect and accurate feedback.At its core, the UC3823DWG4 has two main operating parameters: the switching frequency and the external loop gain. The switching frequency is the parameter that dictates the rate of the oscillations in the power supply, while the external loop gain determines the amount of error feedback. The external loop gain can be manually set by adjusting external resistors and capacitors.The output of the UC3823DWG4 can be manually configured to one of four different output modes. These are the single-ended or fly-back mode, the disconnected or triple-mode, the charged-pump mode, or the synchronous rectification mode. These various output options provide the user with a wide range of flexibility and control over the power supply output.The UC3823DWG4 is manufactured with a wide range of features that make it ideal for many applications. Its operating parameters are rated for use in temperatures from -40?C to +85?C, which makes it suitable for most industrial or consumer end applications. The fact that it can operate up to 1.2MHz further increases the range of applications where it may hold an advantage over other devices. Its on-board protection functions provide essential safety to the associated output loads and equipment. Its adjustable external loop gain, configurable output modes, and wide range of protection and performance specifications makes it an ideal choice for a broad range of power management applications.

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