描述 Description

The uP9617 is a high efficiency synchronous-rectified buckconverter with internal power switches. Fixed 1MHz PWMoperation allows possible smallest output ripple andexternal component size. With high conversion efficiencyand small package, the uP9617 is ideally suitable forportable devices and USB/PCIE-based interface cardswhere PCB area is especially concerned.

With internal low RDS(ON) switches, the uP9617 is capableof delivering 2.0A output current over a wide input voltagerange from 2.6V to 5.5V. The output voltage is adjustablefrom 0.6V to VIN by a voltage divider. Other features includeinternal soft-start, chip enable, over-voltage, undervoltage,over-temperature and over-current protections.The uP9617 is available in a space-saving WQFN3x3-16Lpackage.

特性 Features

·2.6V to 5.5V Input Voltage Range
·Adjustable Output from 0.6V to VIN
·Guaranteed 2.0A Output Current
·Accurate Reference: 0.6V (±1.5%)
·Up to 95% Conversion Efficiency
·Low Quiescent Current
·Integrated Low RDS(ON) Upper and Lower MOSFET Switches: 100mΩ and 85mΩ
·Current Mode PWM Operation
·Fixed Frequency: 1MHz
·100% Maximum Duty Cycle for Lowest Dropout
·Internal Soft-Start
·No Schottky Diode Required
·Over-Voltage and Under-Voltage Protection
·Over-Temperature and Over-Current Protection
·WQFN3x3-16L Package
·RoHS Compliant and Halogen Free

應(yīng)用 Application

·Battery-Powered Portable Devices·MP3 Players
·Digital Still Cameras
·Wireless and DSL Modems
·Personal Information Appliances

·802.11 WLAN Power Supplies
·FPGA/ASIC Power Supplies
·Dynamically Adjustable Power Supply for CDMA/WCSMA Power Amplifiers
·USB-Based xDSL Modems and Other Network Interface Cards
·Point-of-Load Regulation