UC3846G-S16W-R (SOP16) Current-Mode PWM Power Controller

Model: UC3846G-S16W-RBrand: UTC (Unisonic Technologies)Package: SOP-16W (Wide-body SOP16)Type: Current-Mode PWM Power Controller (Core IC for Switching Power Supplies)

What is it?

UC3846G-S16W-R is a high-performance fixed-frequency current-mode PWM controller. It adopts SOP-16W surface-mount package. The wide-body package features easier soldering and better heat dissipation, ideal for mass production and industrial power supply design.

Integrated modules: Oscillator, error amplifier, current sense comparator, PWM latch, under-voltage lockout, soft-start, over-current protection and other circuits.

Operating Frequency: Up to 500kHz, enabling high-frequency and miniaturized power supplies.Output Drive: Peak current 400mA, capable of directly driving MOSFETs.Reference Accuracy: ±1% precision bandgap reference.Temperature Range: -40℃ ~ +125℃, offering excellent stability for industrial applications.

Functions

Core function: Ensure stable, efficient and safe operation of switching power supplies, and realize AC-DC / DC-DC voltage conversion.

• Current-mode control: Fast dynamic response, high voltage regulation accuracy and simple loop design.

• Cycle-by-cycle current limiting: Limits current in each cycle to prevent device burnout and resist current surges.

• Soft-start: Gradually boosts voltage at power-on to reduce inrush current and protect post-stage components.

• Under-Voltage Lockout (UVLO): Automatically shuts down when the supply voltage is insufficient to avoid abnormal operation.

• Automatic symmetry correction for push-pull and half-bridge topologies: Prevents transformer flux imbalance and saturation.

• Parallel operation support: Multiple ICs can be synchronized to expand power for high-power applications.

Application Scope

• Industrial Power Supplies: Industrial computers, PLCs, servo power supplies, industrial adapters

• Consumer Electronics: Laptop chargers, TV / set-top box power supplies, LED drivers

• New Energy: Solar inverters, energy storage power supplies, vehicle-mounted power supplies

• Communication Equipment: Base station power supplies, router / switch power modules

Compatible topologies: Flyback, forward, push-pull, half-bridge, Boost and other mainstream architectures.

Spot Supply Advantages

• 100% Original: Genuine UTC products with latest 26+ lot numbers, guaranteed authentic.

• Sufficient Stock: Over 100K units in stock at Shenzhen warehouse, same-day delivery available.

• Competitive Price: Preferential price for large orders. Tax invoices and sample testing are supported.

• Stable Supply: Long-term available stock for sustainable cooperation.

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