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ONSEMI UC3843BVDR2G Current Mode Controller
The UC3843BVDR2G is a high-performance fixed-frequency current mode controller designed for use in off-line and DC-DC converter applications. It features a trimmed oscillator for precise duty cycle control, a temperature-compensated reference, high-gain error amplifier, and a high-current totem pole output capable of driving power MOSFETs up to 1.0 A peak. The device includes undervoltage lockout with hysteresis, cycle-by-cycle current limiting, programmable deadtime, and a latch for single pulse metering. Its separation of power and ground pins reduces switching transient noise, making it ideal for efficient power regulation systems in industrial and consumer electronics.
ONSEMI UC3843BVDR2G Current Mode Controller Specifications:
- Oscillator Frequency: 250 kHz guaranteed
- Maximum Output Duty Cycle: 94-96%
- Peak Output Current: 1.0 A
- Undervoltage Lockout (UVLO) Thresholds: 8.4 V (on), 7.6 V (off)
- Reference Output Voltage: 5.0 V ± 1%
- Voltage Feedback Input: -20 μA bias current
- Power Dissipation for SOIC-14: 862 mW at 25°C
- Operating Junction Temperature: -40°C to +105°C
- Package Types: SOIC-14, SOIC-8
- Thermal Resistance (Junction-to-Air): 100°C/W (SOIC-14)
- Maximum Bias Voltage: 30 V
- Output Saturation Voltage: Typical 1.0 V at 1.0 A peak drive
- Device contains ESD protection exceeding 4000 V Human Body Model
- Switching Regulator application suitable for high-efficiency power supplies
- Maximum Power Dissipation: 862 mW (SOIC-14)
Buy the ON Semiconductor Series High Performance Current Mode Controller: UC3843BVDR2G
Experience reliable power management with the ON Semiconductor UC3843BVDR2G, a high-performance current mode controller ideal for off-line and DC-DC converters. It offers precise duty cycle control thanks to a dedicated oscillator, a temperature-stable reference, high-gain error amplifier, and a robust high-current output capable of driving power MOSFETs up to 1.0 A. The device features undervoltage lockout with hysteresis, cycle-by-cycle current limiting, programmable deadtime, and separate power and ground pins to minimize switching noise, ensuring optimal performance in industrial, consumer, and computing power supplies. Durable and efficient, it is designed for demanding power regulation needs.
Get ON Semiconductor UC3843BVDR2G today—built for precision and long-lasting durability in power regulation applications.
Frequently Asked Questions
Where can I buy ONSEMI UC3843BVDR2G?
You can click on the BUY or RFQ button to purchase UC3843BVDR2G from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC3843BVDR2G?
You can download the UC3843BVDR2G datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC3843BVDR2G?
ONSEMI