UC2843AQD8RVS Texas Instruments In Stock
UC2843AQD8RVS is a current-mode PWM controller IC by Texas Instruments with 500 kHz max frequency, 1 A gate drive output, and 8-pin SOIC package for flyback, forward, and boost converter designs. Key specs: fixed-frequency current-mode control, 8 V to 30 V input, -40°C to +85°C. Available in stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC2843AQD8RVS?
- Current-mode PWM control architecture enabling inherent cycle-by-cycle current limiting for improved short-circuit protection
- Maximum oscillator frequency up to 500 kHz enabling compact transformer and inductor designs
- 1 A peak totem-pole gate drive output minimizing MOSFET switching losses at high frequencies
- Input voltage range of 8 V to 30 V covering wide-input offline and DC/DC converter supply rails
- Integrated leading-edge blanking and slope compensation reducing susceptibility to switching noise
- 8-pin SOIC package allowing dense PCB layouts in power supply modules and adapter designs
What is UC2843AQD8RVS used for?
The UC2843AQD8RVS is widely used as the primary control IC in isolated flyback converters, forward converters, and non-isolated boost regulators for power supplies in industrial equipment, telecom DC/DC modules, and AC/DC adapters. Its current-mode control loop simplifies compensation network design and provides inherent over-current protection, making it a standard choice for designing SMPS circuits in the 5 W to 100 W range. The device is also popular in motor-drive auxiliary power supplies and battery-charger controllers where tight voltage regulation and fast transient response are required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for UC2843AQD8RVS?
Compatible alternatives and drop-in replacements for UC2843AQD8RVS:
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Frequently Asked Questions
Which verified parameters matter most when designing with UC2843AQD8RVS?
UC2843AQD8RVS is identified as a current-mode PWM controller supporting up to 500 kHz, 1 A gate drive, and an 8 V to 30 V input range. Engineers should confirm these ratings and adjacent operating limits against the current manufacturer datasheet before releasing the design.
How can UC2843AQD8RVS fit an engineering application?
It fits flyback, forward, and boost converter control designs requiring fixed-frequency peak-current-mode regulation. Its 500 kHz switching and 1 A drive provides a concrete selection point for evaluating electrical performance, thermal margin, and compatibility with the surrounding circuit.
Before a production purchase, what should buyers check for UC2843AQD8RVS?
Procurement teams should match the complete UC2843AQD8RVS order code and the 8-pin SOIC footprint, temperature grade, and tape-and-reel suffix. They should also verify 500 kHz switching and 1 A drive, lot traceability, lifecycle status, and authorized-source documentation.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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