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DK1203 AC-DC Switch Mode Power Controlling IC DIP-8 is a high-performance PWM controller designed for low-power off-line switch-mode power supplies. It integrates a PWM controller and power MOSFET into a single DIP-8 package, making it ideal for compact and efficient AC-DC conversion circuits. This IC is commonly used in battery chargers, LED drivers, adapters, and small appliances.
Key Features:
- Highly Integrated: Combines power MOSFET and PWM controller in one DIP-8 package
- Low Standby Power: Optimized for energy-efficient operation and minimal idle consumption
- Cycle-by-Cycle Current Limiting: Built-in protection against overcurrent conditions
- Internal Start-Up Circuit: Eliminates the need for external start-up resistors
- Auto Restart Protection: Recovers automatically from fault conditions
Technical Specifications:
- Input Voltage: 85V – 265V AC
- Output Power: Up to 12W (typical, depending on application)
- Switching Frequency: ~60kHz
- Start-up Current: <10μA
- Operating Current: ~1.5mA
- Maximum Drain Current: 800mA
Mechanical Specifications:
- Package Type: DIP-8 (Dual Inline Package)
- Material: Plastic epoxy body, tin-plated leads
- Mounting: Through-hole PCB mount
Dimensions:
- Body Width: ~6.35mm
- Pin Pitch: 2.54mm
- Lead Span: ~7.62mm
Pinout and Wiring:
- Pin 1 (VCC): Supply voltage input
- Pin 2 (FB): Feedback input from opto-isolator
- Pin 3 (GND): Ground
- Pin 4 (NC): Not connected internally
- Pin 5 (Drain): Internal MOSFET drain (connected to transformer primary)
- Pin 6 (Drain): Same as Pin 5
- Pin 7 (Drain): Same as Pin 5
- Pin 8 (Drain): Same as Pin 5
Datasheet Reference:
- Search online for “DK1203 PWM Controller IC Datasheet by DK Semiconductor”
Applications:
- Mobile Chargers: Widely used in compact phone and device chargers
- LED Power Supplies: Suitable for low-power LED driver circuits
- AC-DC Converters: For powering small electronics from mains
- Battery Chargers: Used in low-wattage charging circuits
- Adapters: Efficient solution for small wall plug power supplies
Equivalent Models:
- DK1201: Similar PWM control IC with different power handling
- VIPer12A: STMicroelectronics switch-mode controller with integrated MOSFET
- TOPSwitch-TN (TOP245): Power Integrations IC with comparable functionality
- OB2263: Highly integrated offline PWM switch with similar applications
Package Includes:
- 1 x DK1203 AC-DC Switch Mode Power Controlling IC DIP-8
Additional information
Weight | 1 g |
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by mojahid mondal
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