UC3843D
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- Mfr.Part #
- UC3843D
- Manufacturer
- Fairchild Semiconductor
- Package / Case
- 8-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- SWITCHING CONTROLLER
- Stock
- 12,403
- In Stock ：
- 12,403
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- Manufacturer :
- Fairchild Semiconductor
- Product Category :
- DC DC Switching Controllers
- Power Dissipation :
- 650mW
- Width :
- 3.91mm
- Thickness :
- 1.58mm
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Weight :
- 72.603129mg
- Control Features :
- Frequency Control
- REACH SVHC :
- No SVHC
- Topology :
- Boost, Buck, Buck-Boost, Flyback, Forward
- Rise Time :
- 50ns
- Voltage - Supply (Vcc/Vdd) :
- 12V~28V
- Terminal Position :
- Dual
- Function :
- Step-Up, Step-Down, Step-Up/Step-Down
- Input Voltage-Nom :
- 15V
- Duty Cycle (Max) :
- 97%
- Surface Mount :
- yes
- Output Configuration :
- Positive
- Control Mode :
- CURRENT-MODE
- Number of Outputs :
- 1
- Nominal Input Voltage :
- 15V
- Length :
- 4.9mm
- Base Part Number :
- UC3843
- Operating Supply Current :
- 11mA
- Packaging :
- Tube
- Control Technique :
- PULSE WIDTH MODULATION
- Package / Case :
- 8-SOIC (0.154, 3.90mm Width)
- Output Current :
- 200mA
- Output Type :
- Transistor Driver
- Supply Current-Max (Isup) :
- 25mA
- Synchronous Rectifier :
- No
- Frequency :
- 450kHz
- ECCN Code :
- EAR99
- Height :
- 1.75mm
- Lead Free :
- Lead Free
- Analog IC - Other Type :
- SWITCHING CONTROLLER
- Input Current :
- 11mA
- Number of Pins :
- 8
- Operating Temperature :
- 0°C~70°C TA
- Max Duty Cycle :
- 100 %
- Output Voltage :
- 5V
- Number of Terminations :
- 8
- Lifecycle Status :
- ACTIVE (Last Updated: 1 day ago)
- Mounting Type :
- Surface Mount
- RoHS Status :
- ROHS3 Compliant
- Peak Reflow Temperature (Cel) :
- 260
- Factory Lead Time :
- 6 Weeks
- Quiescent Current :
- 11mA
- Frequency - Switching :
- Up to 500kHz
- JESD-609 Code :
- e4
- Fall Time (Typ) :
- 50 ns
- Pbfree Code :
- yes
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Terminal Form :
- Gull wing
- Datasheets
- UC3843D
DC DC Switching Controllers Fairchild Semiconductor UC3843D Overview
The UC3843D by Fairchild Semiconductor stands as a robust and versatile DC DC Switching Controller, specifically engineered to manage and optimize power conversion in complex electronic systems. As a critical component in power supply design, this controller integrates innovative technologies to enhance system efficiency and reliability. Its primary function is to facilitate efficient switching of power devices, thereby minimizing power loss and improving overall performance. The design and specifications of the UC3843D make it ideal for high-demand applications, where stable and continuous power supply is crucial. Employing this controller can significantly enhance system stability and extend the operational life of electronic components, making it a valuable asset for designers and manufacturers aiming to boost the efficiency of their power supply solutions.
UC3843D Features
The UC3843D features several key attributes that make it a standout choice for power management. It includes a programmable switching frequency up to 500 kHz, allowing for flexible design choices in power supply circuitry. Additionally, it offers enhanced pulse-by-pulse current limiting which provides excellent protection against short circuits and overloads, ensuring the safety and durability of the application. Its low startup current and high efficiency are designed to optimize power usage and reduce operational costs.
UC3843D Applications
- Power Supplies for Consumer Electronics: The UC3843D is used in the power regulation systems of TVs, computers, and other consumer electronics, ensuring efficient power delivery and enhanced reliability of these devices.
- LED Drivers: It serves as a crucial component in LED driving circuits, enabling consistent and stable LED performance through precise control of power delivery.
- Charging Systems for Batteries: This controller is applied in various charging systems, particularly for lithium-ion batteries, where it helps to regulate the power input to maintain safe and efficient charging cycles.
- Telecommunication Equipment: In telecom power systems, the UC3843D ensures stable and reliable power management, crucial for maintaining the integrity and performance of communication networks.
- Industrial Systems: It is also widely used in industrial applications, where robust power control is needed to handle heavy loads and prevent power supply disruptions.
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