UC2842B / 2842B / UC2842AD8TR / UC2842BD1R2G / UC2842 High Performance Current Mode Controllers

The UC2842B is a high performance fixed frequency current mode controller. Specifically designed for offline and DC-DC converter applications, these integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, a high gain error amplifier, a current sense comparator, and a high-speed IC ideal for driving power MOSFETs. Protection features are also included, including input and reference undervoltage lockout, each with hysteresis, cycle-by-cycle current limit, programmable output deadtime, and latches for single-pulse metering.

The UC2842B has UVLO thresholds of 16 V (on) and 10 V (off), making it ideal for offline converters.