DC-DC Converter
Single Output Buck Converter
uP9617P
1MHz, 2.0A, High-Efficiency Synchronous-Rectified Buck Converter
Datasheets PDF
General Description
The uP9617 is a high efficiency synchronous-rectified buck converter with internal power switches. Fixed 1MHz PWM operation allows possible smallest output ripple and external component size. With high conversion efficiency and small package, the uP9617 is ideally suitable for portable devices and USB/PCIE-based interface cards where PCB area is especially concerned.
With internal low RDS(ON) switches, the uP9617 is capable of delivering 2.0A output current over a wide input voltage range from 2.6V to 5.5V. The output voltage is adjustable from 0.6V to VIN by a voltage divider. Other features include internal soft-start, chip enable, over-voltage, undervoltage, over-temperature and over-current protections. The uP9617 is available in a space-saving WQFN3x3-16L package.
Pin Configuration & Typical Application Circuit
Feature
- 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
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