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Battery Protect
 


 

 
Power Management


uP1711 4MHz, 2A, High-Efficiency Synchronous-Rectified Buck Converter
Feature Application Description Pinout Application Circuit

Feature
  • 2.6V to 6.0V Input Voltage Range
  • Adjustable Output from 0.8V to VIN
  • Guaranteed 2A Output Current
  • Accurate Reference: 0.8V (+/- 1.5%)
  • Up to 95% Conversion Efficiency
  • Typical Quiescent Current: 90uA
  • Integrated Low RDS(ON) Upper and Lower MOSFET Switches: 120mΩ and 100mΩ
  • Current Mode PWM Operation
  • Programmable Operation Frequency
  • 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
  • MSOP-10L or VDFN3x3 -10L Package
  • RoHS Compliant and Halogen Free


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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
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Description

The uP1711 is a high-efficiency synchronous-rectified buck converter with internal power switches. User programmable up to 4MHz PWM operation allows possible smallest output ripple and external component size. With high conversion efficiency and small package, the uP1711 is ideally suitable for portable devices and USB/PCIEbased interface cards where PCB area is especially concerned.

With internal low RDS(ON) switches, the uP1711 is capable of delivering 2A output current over a wide input voltage ranging from 2.6V to 6.0V. The output voltage is adjustable from 0.8V to VIN by a voltage divider. Other features include internal soft-start, chip enable, over-voltage, undervoltage, over-temperature and over-current protections. The uP1711 is available in a space-saving MSOP-10L or VDFN3x3-10L package.


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Pinout

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Application Circuit



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