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CS52845
CS52845
Current Mode PWM Control Circuit with 50% Max Duty Cycle
Description
The CS52845 provides all the necessary features to implement offline fixed frequency current-mode control with a minimum number of external components. The CS52845 incorporates a new precision temperature-controlled oscillator to minimize variations in frequency. An internal toggle flipflop, which blanks the output every other clock cycle, limits the duty-cycle range to less than 50%. An undervoltage lockout ensures that VREF is stabilized before the output stage is enabled. In the CS52845 turn on is at 8.4V and turn off at 7.6V. Other features include low start-up current, pulse-by-pulse current limiting, and a high-current totem pole output for driving capacitive loads, such as gate of a power MOSFET.
CS52845 Datasheet
