The 5L0380R is an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switched-Mode Power Supplies (SMPS) with minimal external components. This IC is a powerhouse that combines a high-voltage power MOSFET with a control chip in a single 4-pin package. It is widely used in the Pakistani repair market to fix dead power supply boards in electronics.
All-in-One Design: Combines a rugged 800V SenseFET with a PWM controller to simplify circuit design.
Low Startup Current: Minimizes power loss during the initial power-on phase.
Precision Protection: Includes pulse-by-pulse current limiting, overload protection (OLP), and over-voltage protection (OVP).
Thermal Shutdown: Built-in internal thermal sensing to prevent the IC from burning out under extreme heat.
Auto-Restart Mode: The IC automatically tries to resume operation once a fault condition (like a short circuit) is cleared.
| Feature | Specification |
| Part Number | 5L0380R / KA5L0380R |
| Package Type | TO-220F-4L (Full Mold) |
| Drain-Source Voltage ($V_{DSS}$) | 800V |
| Output Power | Up to 30W (Adaptor) / 50W (Open Frame) |
| Fixed Operating Frequency | 50 kHz |
| Operating Current | 15mA (Max) |
| Startup Current | 0.1mA (Typical) |
Satellite Receivers: The most common IC found in receiver power boards.
DVD/Blu-ray Players: Used in internal AC-DC converters.
LED TV Power Boards: Often used in the standby power section.
Industrial Adapters: Reliable for 12V and 24V power brick repairs.
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