UC3843N Switching Controllers by HGSEMI – High-Speed PWM for Power-Efficient Systems
The Switching Controllers UC3843N by HGSEMI are high-performance current-mode PWM controllers designed to deliver fast and precise voltage regulation. These controllers are perfect for a wide range of power management IC applications, including switch-mode power supplies (SMPS), DC-DC converters, and more.
With a compact DIP-8 package and superior efficiency, the UC3843N stands out among Switching Controllers used in industrial, telecom, and consumer power systems.
Technical Specifications of UC3843N
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Manufacturer: HGSEMI
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Part Number: UC3843N
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Function: Current-Mode PWM Switching Controller
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Input Voltage Range: 7.6V – 30V
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Start-Up Current: <1 mA
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Output Type: Totem-Pole
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Oscillator Frequency: Up to 500kHz
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Package: DIP-8
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Category: Semiconductors, Integrated Circuits - ICs, Power Management ICs, Voltage Regulators & Voltage Controllers, Switching Controllers
The UC3843N is designed for efficient and accurate control in compact designs.
Key Features of UC3843N Switching Controllers
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Fast current-mode PWM control with enhanced loop response
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Low start-up and operating current for energy savings
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Trimmed internal 5V reference (±1%)
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Totem-pole output stage for fast switching
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Undervoltage lockout (UVLO) with hysteresis
With its robust feature set, the UC3843N Switching Controllers enable high-performance voltage regulation in demanding environments.
Applications of UC3843N
A dependable solution in the realm of Power Management ICs and Voltage Regulators & Voltage Controllers.
Wiring and Connection Overview
Pin Configuration (DIP-8):
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Pin 1: Compensation
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Pin 2: Voltage Feedback
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Pin 3: Current Sense
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Pin 4: RT/CT (Timing)
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Pin 5: Ground
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Pin 6: Output
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Pin 7: VCC
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Pin 8: Reference (VREF)
This IC is easy to implement in standard SMPS topologies with minimal external components.
Use Case Scenario: Industrial Automation Power Supply
Challenge: A manufacturer of automation equipment needed a reliable switching controller for a compact and efficient 24V power supply.
Solution: The UC3843N Switching Controllers from HGSEMI delivered consistent PWM control, reduced heat, and helped meet strict efficiency standards.
Result: Improved system uptime and reduced power losses — all using one robust switching controller.
Also Available from Other Manufacturers
You can also find compatible Switching Controllers from:
Browse and compare to find the best fit for your design needs.
Download Datasheet for UC3843N
[Download the UC3843N Datasheet from Xon Electronics]
Why Buy from Xon Electronics?
When you order from Xon Electronics, you get:
- Original HGSEMI ICs
- Global shipping to USA, India, Australia, Europe & beyond
- Bulk order support & OEM pricing
- Instant datasheet access
- Secure and easy checkout
We specialize in Semiconductors, Switching Controllers, and Voltage Regulators & Controllers.
FAQs – UC3843N Switching Controllers
Q1. What is the main difference between UC3842 and UC3843?
UC3843 has a lower UVLO threshold, making it suitable for lower start-up voltages.
Q2. Is UC3843N suitable for high-frequency switching?
Yes, it supports up to 500kHz switching frequency.
Q3. Can I use this IC in LED lighting circuits?
Absolutely. It is commonly used in LED drivers and lighting SMPS systems.
Q4. What package is UC3843N available in?
DIP-8 through-hole.
Q5. Does Xon Electronics offer international delivery?
Yes! We ship to USA, India, Australia, Europe, and worldwide.
Conclusion
The UC3843N Switching Controllers by HGSEMI provide high-speed, current-mode PWM control ideal for energy-efficient SMPS and power supplies. With excellent line/load regulation and thermal performance, it's a preferred solution for industrial and consumer designs.
Order now from Xon Electronics and enjoy fast global delivery to USA, India, Australia, Europe, and more.