FR9889 - Fiti

FR9889 340KHz Synchronous Step-Down DC/DC Converter

SOP8 DESCRIPTION 1 High Side Gate Drive Boost 2 Power Supply Input Pin 3 Power Switching Output 4,9 Ground 5 Voltage Feedback Input 6 Power Good Output 7 Enable Input 8 Soft-Start TYPICAL APPLICATION STB (Set-Top-Box) LCD Displays, TV Distributed Power System Networking, XDSL Modem PACKAGE SOP-8 (EP) 3 、、 FR9887/9 Light Load Efficiency is Convin.

Features

High Efficiency up to 95% Low Rds(on) Integrated Power MOSFET Internal Compensation Function Internal Power Good Function Wide Input Voltage Range: 4.5V to 23V Adjustable Output Voltage Down to 0.925V 3A Output Current Fixed 340KHz Switching Frequency External Programmable Soft-Start or Internal 600µs Soft-Start PSM (High Efficiency at Light Load) Hiccup Short Circuit Protect TYPICAL APPLICATION CIRCUIT NAME BST VIN LX GND FB PG SHDN SS PIN DESCRIPTION SOP8 DESCRIPTION 1 High Side Gate Drive Boost 2 Power Supply Input Pin 3 Power Switching Output 4,9 Ground 5 Voltage Feedback Input 6 .