General Description:
The CN5120 is a current mode fixed-frequency PWM controller for both flyback and step-up DC-DC converters. The device operates from an input supply between 4.5V and 32V and provides to drive an external N-channel MOSFET. The CN5120 contains all the necessary building blocks including a bandgap reference, a 330KHz oscillator, current-mode control circuitry, chip shutdown block, softstart block and gate driver, etc.

FEATUREs:
● Peak Current Mode DC-DC Boost/ Flyback
   Controller
● 4.5V to 32V Input Range
● 330kHz Switching Frequency
● ± 2% Output Voltage Accuracy
● Cycle-by-Cycle Peak Inductor Current Limit
● On-Chip Slope Compensation
● Internal Soft-start
● Built-in 5V regulator
● Low Shutdown Current
● Operating Temperature Range:
   － 40℃ to 85℃
● Available in 10-pin SSOP package.
● Lead-free, Rohs-compliant and Halogen-free

APPLICATIONs:
● TFT-LCD Bias Supplies
● XDSL Power Supplies
● Medical Equipments
● Digital Video Cameras
● Portable Devices