onsemi DC DC Switching Controllers CS3843AGDR8

The CS3843AGDR8 is a DC-DC switching controller designed for off-line current mode PWM control applications. It features a precision temperature-controlled oscillator with an internally trimmed discharge current, which minimizes frequency variations. The device supports a maximum duty cycle clamp and ensures that the reference voltage (VREF) is stabilized before enabling the output stage. Key specifications include low startup current, pulse-by-pulse current limiting, and a high-current totem pole output suitable for driving capacitive loads such as power MOSFET gates. The output is low in the off state, making it compatible with N-channel devices. The CS3843AGDR8 is available in an SO-8 package and operates within a temperature range of 0¬8C to 70¬8C. Engineers considering this product will find it suitable for applications requiring efficient power management with minimal external components.