FP6329A

fitipower integrated technology lnc. Preliminary FP6329/A Synchronous Buck PWM DC-DC Controller Description The FP6329/A is designed to drive two N-channel MOSFETs in a synchronous rectified buck topology. It provides the output adjustment, internal soft-start, frequency compensation networks, monitoring and protection functions into a single package. The FP6329/A operating at fixed 300/600kHz frequency provides simple, single feedback loop, voltage mode control with fast transient response. The resulting PWM duty ratio ranges from 0-100%. The FP6329/A features over current protection. The output current is monitored by sensing the voltage drop across the RDS-ON of the low side MOSFET which eliminates the need for a current sensing resistor. This device is available in SOP-8 package. Features ● Operates from +5V or +12V ● High Output Current ● Drives Two Low Cost N-Channel MOSFETs ● Fast Transient Response ● Simple Single-Loop Control Design ( Voltage-Mode PWM Control) ● Internal Soft-Start ● Over-Current Protection ● Over-Voltage Protection ● Under-Voltage Protection ● SOP-8 Package ● RoHS Compliant Applications ● Motherboard ● Graphic Card ● Telecomm Equipments ● High Power DC-DC Regulators ● Switching Power Supply (SPS) Pin Assignment SO Package (SOP-8) Ordering Information FP6329□□□□ TR: Tape / Reel G: Green Package Type SO: SOP-8 SP: SOP-8(Exposed Pad) Switching Frequency Blank: 300kHz A: 600kHz SP Package (SOP-8) Figure 1. Pin Assignment of FP6329/...