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ONSEMI UC3844BVD1R2G PWM Controller
The UC3844BVD1R2G is a high-performance, fixed-frequency current-mode PWM controller designed for off-line and DC-to-DC converter applications. It offers a cost-effective solution with minimal external components, featuring an oscillator, 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. The controller includes protective features such as input and reference undervoltage lockouts with hysteresis, cycle-by-cycle current limiting, a latch for single pulse metering, and a flip-flop that blanks the output every other oscillator cycle to enable programmable deadtimes ranging from 50% to 70%. Additional features include a trimmed oscillator for precise frequency control, automatic feed-forward compensation, internally trimmed reference, high-current output, undervoltage lockout with hysteresis, and low startup and operating current. It is primarily used in power management and industrial applications. Note: Due to high market demand, lead times may be extended, and delivery dates can fluctuate. The product is exempt from discounts.
ONSEMI UC3844BVD1R2G PWM Controller Specifications:
- Maximum Power Dissipation @ Ta = 25°C: 862 mW (SOIC-14), 702 mW (SOIC-8), 1.25 W (PDIP-8)
- Operating Junction Temperature: +150°C
- Undervoltage Lockout Thresholds: 16V (on) and 10V (off) for UC3844B, 8.5V (on) and 7.6V (off) for UC3845B
- Oscillator Frequency: Guaranteed at 250 kHz, adjustable up to 500 kHz
- Output Deadtime: Programmable from 50% to 70%
- Output Peak Current: Up to 1.0 A
- Thermal Resistance Junction-to-Air: 145°C (SOIC-14), 178°C (SOIC-8), 100°C (PDIP-8)
- Input Voltage Range: Up to 36 V (UVLO thresholds as specified)
- Low Startup and Operating Current
- Pb-Free and RoHS compliant
- Packaging: SOIC-14, SOIC-8, PDIP-8, with optional tape and reel for automation industries
Buy the ON Semiconductor UC3844BVD1R2G – Reliable PWM Controller for Industrial Applications
Purchase the ON Semiconductor UC3844BVD1R2G PWM controller online today and enjoy a high-performance, cost-effective solution for off-line and industrial DC-DC converter applications. It features an oscillator with precise frequency control, adjustable deadtime from 50% to 70%, undervoltage lockout with hysteresis, cycle-by-cycle current limiting, and a high-current totem pole output suitable for driving power MOSFETs. Designed for minimal external components, it ensures robust power management, reliable operation, and flexibility, making it ideal for power supplies, industrial automation, and power conversion systems. Order now for fast delivery.
Buy ON Semiconductor UC3844BVD1R2G now and experience unmatched reliability, integrated protections, and precise PWM control for industrial power management.
Frequently Asked Questions
Where can I buy ONSEMI UC3844BVD1R2G?
You can click on the BUY or RFQ button to purchase UC3844BVD1R2G from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC3844BVD1R2G?
You can download the UC3844BVD1R2G datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC3844BVD1R2G?
ONSEMI