UC3843D
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- Mfr.Part #
- UC3843D
- Manufacturer
- Unitrode
- Package / Case
- 8-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- UC3843 CURRENT-MODE PWM CONTROLL
- Stock
- 7,156
- In Stock ：
- 7,156
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- Manufacturer :
- Unitrode
- Product Category :
- DC DC Switching Controllers
- Surface Mount :
- yes
- ECCN Code :
- EAR99
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Topology :
- Boost, Buck, Buck-Boost, Flyback, Forward
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Peak Reflow Temperature (Cel) :
- 260
- Nominal Input Voltage :
- 15V
- Weight :
- 72.603129mg
- Input Voltage-Nom :
- 15V
- Packaging :
- Tube
- Pbfree Code :
- yes
- Width :
- 3.91mm
- Input Current :
- 11mA
- Fall Time (Typ) :
- 50 ns
- Function :
- Step-Up, Step-Down, Step-Up/Step-Down
- Analog IC - Other Type :
- SWITCHING CONTROLLER
- Number of Pins :
- 8
- Voltage - Supply (Vcc/Vdd) :
- 12V~28V
- Frequency :
- 450kHz
- Rise Time :
- 50ns
- RoHS Status :
- ROHS3 Compliant
- Output Current :
- 200mA
- Thickness :
- 1.58mm
- Output Configuration :
- Positive
- JESD-609 Code :
- e4
- Output Type :
- Transistor Driver
- Lead Free :
- Lead Free
- Base Part Number :
- UC3843
- Frequency - Switching :
- Up to 500kHz
- Control Mode :
- CURRENT-MODE
- Height :
- 1.75mm
- Max Duty Cycle :
- 100 %
- Factory Lead Time :
- 6 Weeks
- Synchronous Rectifier :
- No
- Terminal Position :
- Dual
- Terminal Form :
- Gull wing
- Package / Case :
- 8-SOIC (0.154, 3.90mm Width)
- Operating Temperature :
- 0°C~70°C TA
- Power Dissipation :
- 650mW
- Control Features :
- Frequency Control
- Lifecycle Status :
- ACTIVE (Last Updated: 1 day ago)
- Duty Cycle (Max) :
- 97%
- Number of Outputs :
- 1
- Operating Supply Current :
- 11mA
- Output Voltage :
- 5V
- Quiescent Current :
- 11mA
- Number of Terminations :
- 8
- REACH SVHC :
- No SVHC
- Control Technique :
- PULSE WIDTH MODULATION
- Length :
- 4.9mm
- Supply Current-Max (Isup) :
- 25mA
- Mounting Type :
- Surface Mount
- Datasheets
- UC3843D
DC DC Switching Controllers Unitrode UC3843D Overview
The UC3843D from Unitrode is a highly efficient and robust DC DC Switching Controller designed to meet the rigorous demands of current-mode PWM control applications. This controller is ideal for high-frequency switching power supplies, featuring excellent performance characteristics that include minimal cross-conduction and superior load and line regulation. The UC3843D facilitates design flexibility while enhancing system reliability, making it a top choice for engineers looking to optimize power management solutions. The integration of this DC DC Switching Controller Unitrode UC3843D in your projects ensures energy-efficient operation and reduces overall system cost, crucial for large-scale deployments.
UC3843D Features
The UC3843D boasts several key features that make it a standout option in power management. These include a wide operating voltage range, high-frequency operation up to 500 kHz, and built-in features like under-voltage lockout, leading-edge blanking of the current sense, and an error amplifier for precise control. Additionally, its low startup current (typically 0.5 mA) and high efficiency operation make it an environmentally friendly choice for power supply design.
UC3843D Applications
- Power Supplies: The UC3843D is extensively used in the design of both isolated and non-isolated power supplies, ensuring stable performance even under variable load conditions.
- DC-DC Converters: This controller is ideal for step-up or step-down converters, facilitating efficient voltage regulation across a broad range of applications.
- Battery Chargers: With its precise control capabilities, the UC3843D is perfect for managing the charging cycles in battery-powered devices, optimizing battery health and longevity.
- LED Lighting Drivers: In LED lighting applications, the UC3843D helps in delivering consistent, flicker-free illumination while maximizing energy efficiency.
- Communication Equipment: Its robust design makes it suitable for powering communication infrastructure, ensuring reliable operation in various environmental conditions.
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