DC-DC Converter
Single Output Buck Converter
uP1727Q
1.0MHz, 3.0A, High-Efficiency Synchronous-Rectified Buck Converter
Datasheets PDF
General Description
The uP1727Q is a high efficiency synchronous-rectified buck converter with internal power switches. Fixed 1.0MHz PWM operation allows possible smallest output ripple and external component size. With high conversion efficiency and small package, the uP1727Q 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 uP1727Q is capable of delivering 3.0A 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, overvoltage, under-voltage, over-temperature and over-current protections. The uP1727Q is available in a space-saving WDFN3x3-10L package.
Pin Configuration & Typical Application Circuit
Feature
- 2.6V to 5.5V Input Voltage Range
- Adjustable Output from 0.6V to VIN
- Guaranteed 3.0A Output Current
- Accurate Reference: 0.6V (± 1%)
- Up to 95% Conversion Efficiency
- Low Quiescent Current
- Integrated Low RDS(ON) Upper and Lower MOSFET Switches: 70mΩ and 50mΩ
- Current Mode PWM Operation
- Fixed Frequency : 1.0MHz
- 100% Maximum Duty Cycle for Lowest Dropout
- Internal Soft-Start
- Over Voltage and Under Voltage Protection
- Over Temperature and Over Current Protection
- WDFN3x3-10L Package
- RoHS Compliant and Halogen Free
Application
- Battery-Powered Portable Devices
- MP3 Players
- Notebook Computers
- Wireless and DSL Modems
- Personal Information Appliances
- IP Phones
- Digital Cameras
- 802.11 WLAN Power Supplies
- FPGA/ASIC Power Supplies
- Dynamically Adjustable Power Supply for CDMA/WCDMA Power Amplifiers
- USB-Based xDSL Modems and Other Network Interface Cards
- Point-of-Load Regulation