UC3842AN PWM Controller IC
₹39.00
UC3842AN is a current mode PWM controller IC used for SMPS, flyback converters, DC-DC converters, and inverter applications. It provides accurate PWM control, MOSFET drive output, current protection, and stable switching performance.
Description
UC3842AN is a high-performance current mode PWM controller IC designed for switch mode power supply (SMPS), DC-DC converters, battery chargers, and power inverter applications. It provides complete PWM control with an internal oscillator, error amplifier, current sensing circuit, voltage reference, and high-current output driver for controlling external MOSFETs.
UC3842AN is widely used in offline flyback converters and switching power supply designs because of its fast response, accurate current control, and built-in protection features. The IC helps improve power supply efficiency and provides reliable switching operation with fewer external components.
Features
- Current mode PWM control
- Fixed frequency operation
- Operating frequency up to 500kHz
- Internal 5V precision voltage reference
- Low startup current
- High current totem-pole output driver
- Direct MOSFET gate drive capability
- Cycle-by-cycle current limiting
- Undervoltage lockout (UVLO) protection
- Fast switching response
- Excellent load regulation
- Available in 8-pin DIP package
Specifications
Specifications |
Value |
|---|---|
| IC Type | PWM Controller |
| Model | UC3842AN |
| Package | DIP-8 |
| Control Mode | Current Mode PWM |
| Supply Voltage | 12V to 28V |
| Reference Voltage | 5V |
| Maximum Frequency | 500kHz |
| Output Drive Current | High Current Gate Drive |
| Duty Cycle | Up to 100% |
| Switching Type | Fixed Frequency |
| Operating Temperature | 0°C to +70°C |
| Mounting Type | Through Hole |
Applications
- SMPS power supplies
- AC-DC adapters
- Flyback converters
- DC-DC converters
- Battery chargers
- LED drivers
- UPS systems
- Inverter circuits
- Industrial power supplies
- Switching regulators
Advantages
- High efficiency power conversion
- Simple SMPS circuit design
- Reliable MOSFET control
- Built-in protection features
- Fast transient response
- Low external component requirement
- Widely used and easy to replace
Reviews
There are no reviews yet.