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ONSEMI UC3845BDR2G Power Controller
The UC3844B series are high-performance fixed-frequency current mode controllers designed for Off-Line and DC-DC converter applications. They feature an integrated oscillator with programmable deadtime from 50% to 70%, a temperature-compensated reference, high gain error amplifier, and a high-current totem pole output suitable for MOSFET driving. Offering undervoltage lockout, cycle-by-cycle current limiting, and synchronization capabilities, these devices come in both 8-pin and 14-pin packages with separate power grounds for enhanced noise immunity, making them ideal for power regulation and switch-mode power supplies.
ONSEMI UC3845BDR2G Power Controller Specifications:
- Oscillator frequency guaranteed at 250 kHz, adjustable deadtime from 50% to 70%
- High current totem pole output capable of 1.0 A peak current
- Undervoltage lockout thresholds of 16V (on) and 10V (off) for UC3844B, 8.5V (on) and 7.6V (off) for UC3845B
- Operating temperature ranges: UC3844B/UC3845B from 0°C to +70°C, UC2844B/UC2845B from -25°C to +85°C, up to +105°C for BV variants
- Power dissipation: 862mW (SOIC-14), 702mW (SOIC-8), 1.25W (PDIP-8), thermal resistance: Rja 145°C, 178°C, 100°C respectively
- Voltage ratings: up to 36V (Veo), output peak drive current: 1.0 A, reference voltage: 5.0 V with ±1.0% trimming
- Electrical ratings include reference output voltage, line/load regulation, oscillator frequency variation, and sink/source output currents
- Device includes internal protections like UVLO with hysteresis, latch, and cycle-by-cycle current limit
- Designed to meet RoHS and Pb-Free standards, with automotive-grade options (NCV prefix) for durability
- Package options: SOIC-14, SOIC-8, PDIP-8 with detailed dimensions and soldering guidelines
Buy the ON Semiconductor UC3845B – Reliable Power Controller for Industrial Applications
Purchase the ON Semiconductor UC3845B power controller today online to ensure high-efficiency power regulation in your switching power supplies. Its fixed-frequency operation, programmable deadtime, and high-current output make it ideal for Off-Line and DC-DC converter applications. Designed with robust protections like undervoltage lockout and cycle-by-cycle current limiting, this device delivers dependable performance and simplifies your power management circuitry. Order now to enhance your project’s reliability and efficiency with this essential power control component.
Order your ON Semiconductor UC3845B current mode controller today and optimize your power switching designs with reliable, efficient performance.
Frequently Asked Questions
Where can I buy ONSEMI UC3845BDR2G?
You can click on the BUY or RFQ button to purchase UC3845BDR2G from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC3845BDR2G?
You can download the UC3845BDR2G datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC3845BDR2G?
ONSEMI