Description
UC3842 Current-Mode PWM Controller IC DIP-8 | High-Performance Switching Regulator IC
The UC3842 is a high-performance current-mode PWM controller IC designed for switching power supply applications. It provides accurate output voltage regulation, fast transient response, and high efficiency, making it ideal for various power conversion circuits. With its internal oscillator, error amplifier, and current sense comparator, the UC3842 ensures stable and reliable operation in DC-DC and AC-DC converter circuits.
Features:
Wide Operating Voltage Range: 7V to 40V Fixed Frequency Oscillator: Adjustable frequency up to 500kHz Current Mode Control: Ensures stable operation and fast transient response Low Startup Current: Reduces power consumption High Gain Error Amplifier: Provides accurate voltage regulation Undervoltage Lockout (UVLO): Prevents operation at low voltages Short-Circuit Protection: Ensures circuit safety Internal Thermal Shutdown: Protects against overheating High-Speed Operation: Suitable for high-frequency switching applications
Technical Specifications:
| Parameter | Value |
|---|---|
| Operating Voltage | 7V – 40V |
| Oscillation Frequency | Up to 500kHz (adjustable) |
| Startup Current | <1mA |
| Operating Current | 11mA (typical) |
| Output Voltage | 5V |
| Duty Cycle | 0% – 100% |
| Switching Mode | Current Mode |
| Package Type | DIP-8 |
Applications:
Switch Mode Power Supplies (SMPS) DC-DC Converters AC-DC Power Supplies Battery Chargers LED Drivers Industrial Power Electronics Motor Control Circuits Telecommunication Equipment
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