UC 3843 B SMD PWM Controller – High efficiency in SMPS supplies

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✅ Product Description:
The UC3843B is a high-performance PWM (Pulse Width Modulation) controller in SMD packaging, ideal for applications in switched-mode power supplies (SMPS), battery chargers, inverters, and brushless motor controllers . Designed to deliver precise and efficient current-mode control, this IC enables duty cycles up to 100% with undervoltage protection and fast-start capabilities.

📦 Technical specifications – UC3843B

• Type: Current mode PWM controller
• Operating voltage: 7.6 V to 8.4 V (UVLO)
• Reference voltage: 5 V ±2%
• Oscillator frequency: Up to 500 kHz
• Starting current: < 0.5 mA
• Output: Totem-pole, capable of handling up to 1 A
• Encapsulation: SMD SO-8

💡 Ideal for:
✔️ Switching power supplies
✔️ Lithium or lead-acid SMPS chargers
✔️ Brushless motor controllers
✔️ DC-DC inverters and converters
✔️ Industrial and power electronics

📄 See official data sheet (PDF)

🚚 Shipping to all of Latin America and the US. 🛡️Working Guarantee