UC3853 Description
The UTC UC3853 is a high performance current mode PWM controller ideally suited for low standby power. Low VDD startup current make the power reliable on startup design and a large value resistor could be used to minimize the standby power. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at light load condition.
UC3853 Key Features
- Peak Current Mode Control
- Adjustable Switching Frequency
- Adjustable Soft-start Timer
- Adjustable Internal Ramp pensation
- Jittering Frequency ±6% of the Switching Frequency
- Power-saving mode for high standby efficiency
- Auto-recovery Primary OCP with 10ms Fixed Delay
- Auto-recovery Brown-Out Detection
- Delayed Operation Upon Start-up via an Internal Fixed Timer
- UC384X-like UVLO Thresholds