A Premier B2B Part Search
ONSEMI UC3843BDR2G Current Mode Controller
The UC3843BDR2G is a high-performance fixed-frequency current mode controller used predominantly in off-line and DC-DC converter applications. It features an internal oscillator, a temperature compensated reference, and a high-current totem pole output designed to directly drive MOSFETs. The device includes undervoltage lockout thresholds, cycle-by-cycle current limiting, programmable deadtime, soft-start circuitry, and separation of power and control grounds to minimize switching noise.
ONSEMI UC3843BDR2G Current Mode Controller Specifications:
- Oscillator frequency: 250 kHz guaranteed, temperature compensated
- Maximum output drive current: 1.0 A
- Output saturation voltage: approximately 2 V
- Undervoltage lockout thresholds: UC3843B UVLO on at 8.4 V, off at 7.6 V
- Reference voltage: 5.0 V ±2% with short-circuit protection
- Maximum power dissipation in SOIC-14 package: 862 mW at 25°C
- Operating junction temperature: -40°C to +105°C
- Separate power (Vcc) and control ground (GND) pins
- Package options include SOIC-8 and SOIC-14
Buy the ON Semiconductor UC3843BDR2G – Reliable Current Mode Controller for Industrial Applications
Upgrade your power conversion systems with the UC3843BDR2G, a high-performance, fixed-frequency current mode controller. Designed for off-line and DC-DC converters, it features an internal oscillator, undervoltage lockout, cycle-by-cycle current limiting, and separate power ground to reduce switching noise. Its high-current totem pole output directly drives power MOSFETs, ensuring efficient operation. The device’s precise control, soft-start features, and robust thermal characteristics make it an ideal choice for reliable, energy-efficient power management in industrial, telecommunications, and electronics applications.
Order your ON Semiconductor UC3843BDR2G today and enhance your power supply designs with a precision, high-performance current mode control solution.
Frequently Asked Questions
Where can I buy ONSEMI UC3843BDR2G?
You can click on the BUY or RFQ button to purchase UC3843BDR2G from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC3843BDR2G?
You can download the UC3843BDR2G datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC3843BDR2G?
ONSEMI