CN5120

CONSONANCE 4.5V to 32V Input Current Mode Boost DC-DC Controller CN5120 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. Current mode control provides improved transient response and simplified loop compensation. On-chip soft start reduces the inrush current on power up. The other features include chip shutdown, over voltage protection, built-in 5V regulator and slope compensation, etc. The CN5120 is available in 10-pin SSOP package. Applications:  TFT-LCD Bias Supplies  XDSL Power Supplies  Medical Equipments  Digital Video Cameras  Portable Devices Features:  Peak Current Mode DC...