资 源 简 介
The UC2825A pulse-width modulaTIon (PWM) controller is an improved versions of the standard UC3825. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is specified to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead-TIme control. Frequency accuracy is improved to 6%. Startup supply current, typically 100 µA, is ideal for off-line applicaTIons. The output drivers are redesigned to acTIvely sink current during undervoltage lockout (UVLO) at no expense to the startup current specification. In addition, each output is capable of 2-A peak currents during transitions.
