The IC UC3843 ST is a high-performance current mode PWM controller designed for off-line and DC-DC fixed-frequency control applications. It offers precise frequency control, low start-up current, and integrated protection features, making it ideal for efficient and reliable power supply designs.
Key Features:
- Trimmed Oscillator: Ensures precise frequency control for stable operation.
- Low Start-Up Current: Features a start-up current of less than 0.5mA, enhancing energy efficiency.
- UVLO: Provides under-voltage lockout (UVLO) with hysteresis to prevent erratic operation.
- Current Mode Operation: Supports operation up to 500kHz, suitable for high-frequency applications.
- Integrated Protection: Includes automatic feed-forward compensation, pulse-by-pulse limiting, and latching PWM.
Package Includes:
- 1 x IC UC3843 ST High-Performance Current Mode PWM Controller
Specifications:
- Input Voltage Range: 7.6V to 30V
- Operating Frequency: Up to 500kHz
- UVLO Thresholds: 8.5V (on), 7.9V (off)
- Output Current: 1A peak
- Package Type: 8-DIP (0.300″, 7.62mm)
- Operating Temperature: 0C to +70C
Applications:
- Off-line converters
- DC-DC converters
- Switch-mode power supplies (SMPS)
- Industrial power control systems
- Battery chargers
Datasheet:
Click here to view the datasheet
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