General Description
The FP5452 is a dual channel PWM buck controller with short circuit protection (SCP) and adjustable maximum duty control (DTC) function. It includes one 2.5V precision voltage reference regulator, two error amplifiers, PWM control circuits, totem-pole output stages and the under voltage lockout circuit (UVLO). It offers space and low cost solutions in many applications such as the DC / DC converters and backlight inverters.
Using FP5452, it is easy to complete a power conversion regulator design with few external components. The circuit diagram of the typical application example is as below.

FEATUREs
➢ Wide Operating Voltage range: 3.6~40V
➢ Fixed Reference Voltage: 2.5V
➢ Reference Voltage Precision: 2%
➢ Oscillator Frequency: Max. 500KHz
➢ Totem-pole Output stage
➢ Low Quiescent Supply Current Under 3.5mA
➢ Variable dead-time Control (DTC)
➢ UVLO Protection Function
➢ SCP Protection Function (Threshold Voltage: 1.3V)
➢ Package: SOP-16L / SSOP-16L

APPLICATIONs
➢ DC / DC Converters for Video Camera
➢ TFT LCD Monitor
➢ Back Light CCFL Inverter