General Description
The FP5453 is a single chip composed of a 2.5V precision voltage reference regulator, totem-pole output stages, two pulse width modulation control circuits each with one error amplifier and duty comparator (DTC). Its built-in functions includes under-voltage lockout circuit (UVLO) and programmable auto-restart timer for short circuit protection (SCSAR). With above features, it offers space and low cost solutions in many applications such as the DC / DC converter.
FP5453, a high performance IC, is designed to complete a control circuit with few external components. The circuit diagram of the typical application example is shown in below.

FEATUREs
➢ Wide Operating Voltage Range: 3.6~25V
➢ Feedback Reference Voltage: 2.5V
➢ Oscillator Frequency: Max. 1.2MHz
➢ Reference Voltage Precision: 2%
➢ Low Quiescent Supply Current Under 4mA
➢ Totem-pole Output Stage
➢ Variable Duty Control (DTC)
➢ Short Circuit Shutdown / Auto Re-start Function (SCSAR)
➢ UVLO Protection Function
➢ Package: SOP-16L / SOP-16L (EP) / SSOP-16L

APPLICATIONs
➢ HUB / Router
➢ Set Top Box
➢ HDD Server
➢ CATV