Description
LD7904 PWM Power IC DIP-6
The LD7904JGP7 is a PWM (Pulse Width Modulation) Power Controller IC mainly used in SMPS (Switch Mode Power Supply) circuits.
👉 This IC controls the switching of power MOSFETs to regulate output voltage efficiently.
👉 If your LED TV, power adapter, or SMPS board is dead or not starting, this IC is often one of the main faulty components.
💡 In simple words:
It acts like the “brain” of the power supply, controlling how electricity flows and ensuring stable output.
🔥 Key Features & Highlights
- ⚡ High-Performance PWM Controller IC – Designed for efficient SMPS power regulation
- 🔌 Widely Used in Power Supply Circuits – Ideal for LED TVs, adapters, chargers & SMPS boards
- 🛠️ Perfect for Repairing Work – Best choice for technicians fixing dead power or no-output issues
- 📦 DIP-6 Package – Easy to solder and replace (through-hole type)
- 🔄 Stable Switching Operation – Ensures consistent voltage output and protection
- 💡 Energy Efficient Design – Reduces power loss and improves overall efficiency
- 🔧 Common Replacement IC – Compatible with many generic PWM controller applications
📊 Technical Specifications
| 🔧 Parameter | 📌 Details |
|---|---|
| IC Name | LD7904JGP7 |
| Type | PWM Power Controller IC |
| Package | DIP-6 (Through Hole) |
| Marking | LD7904JGP7, 124946 |
| Function | SMPS PWM Control |
| Application Voltage | Typically used in AC-DC SMPS |
| Mounting Type | Through Hole |
| Usage | Power Supply Circuits |
| Condition | New / Tested |
🛠️ Applications
- 📺 LED TV Power Supply Board Repair
- 🔌 AC-DC Adapters & Chargers
- 💻 SMPS (Switch Mode Power Supply) Circuits
- 🔋 Set-Top Box Power Supply
- 🖥️ Monitor Power Boards
- ⚙️ DIY Electronics Projects
🎯 Why Buy This IC?
- ✅ Trusted component for technicians & repair engineers
- ✅ Helps fix no power / dead / blinking issues
- ✅ Cost-effective solution instead of replacing full board
- ✅ Easy availability & replacement








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