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ONSEMI UC2843BNG Current Mode PWM Controller
The UC2843BNG is a high-performance fixed-frequency current-mode PWM controller designed for off-line power supplies and DC-DC converter applications. It offers a cost-effective solution with minimal external components and features a precise, trimmed oscillator for accurate duty cycle control, a temperature-compensated reference, a high-gain error amplifier, a current sensing comparator, and a high-current totem pole output suitable for driving power MOSFETs. Additionally, it includes protection features such as undervoltage lockout with hysteresis, cycle-by-cycle current limiting, programmable deadtime, and a latch for single pulse metering. The device is suitable for power management and industrial applications.
ONSEMI UC2843BNG Current Mode PWM Controller Specifications:
- Reference Output Voltage: 5.0 V with +/- 1.0% tolerance at 25°C
- Oscillator Frequency: 250 kHz guaranteed, adjustable via RY/CR components
- Maximum Output Duty Cycle: Up to 96%
- Peak Output Drive Current: 1.0 A
- Undervoltage Lockout Thresholds: 8.4 V (on), 7.6 V (off)
- Maximum Power Dissipation: 862 mW (SOIC-14), 702 mW (SOIC-8), 1.25 W (CASE 626)
- Operating Temperature Range: -25°C to +105°C depending on variant
- Input Voltage Range: Up to 30 V bias and drive voltage
- Error Amplifier Gain: 90 dB, bandwidth 1.0 MHz
- Cycle-by-cycle current limit with adjustable deadtime
- Separate power ground and control ground pins for reduced switching noise
- Pin functions include error amplifier output, inverting input for feedback, current sense input, oscillator timing, and high-current output stage
- Package options include SOIC-14, SOIC-8, PDIP-8 with Pb-Free and Tape & Reel options
Buy the Buy ON Semiconductor UC2843BNG High Performance PWM Controller Online
Get the ON Semiconductor UC2843BNG current mode PWM controller online today. Designed for efficient off-line and DC-DC power supply applications, it offers precise oscillator control, low external component count, and robust protection features like undervoltage lockout and cycle-by-cycle current limiting. Its high-current totem pole output drives power MOSFETs effectively, making it ideal for power management solutions in industrial, consumer, and power supply systems. Purchase now for a cost-effective, reliable power regulation component.
Order your ON Semiconductor UC2843BNG high-performance fixed-frequency PWM controller today and ensure reliable power regulation in your industrial or power supply projects.
Frequently Asked Questions
Where can I buy ONSEMI UC2843BNG?
You can click on the BUY or RFQ button to purchase UC2843BNG from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC2843BNG?
You can download the UC2843BNG datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC2843BNG?
ONSEMI