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uPI Semiconductor - High-Efficiency Synchronous-Rectified Buck Converter

Numéro de référence uP1722P
Description High-Efficiency Synchronous-Rectified Buck Converter
Fabricant uPI Semiconductor 
Logo uPI Semiconductor 





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uP1722P fiche technique
uP1722P/Q
1.5MHz, 1.3A, High-Efficiency
Synchronous-Rectified Buck Converter
General Description
Features
The uP1722 is a high efficiency synchronous-rectified buck † 2.6V to 5.5V Input Voltage Range
converter with internal power switches. Fixed 1.5MHz PWM † 1.3A Peak Output Current
operation allows possible smallest output ripple and
external component size. With high conversion efficiency † Accurate Reference with +/- 2% Accuracy
and small package, the uP1722 is ideally suitable for
„ 0.6V (uP1722P)
portable devices and USB/PCIE-based interface cards
„ 0.5V (uP1722Q)
where PCB area is especially concerned.
† Up to 95% Conversion Efficiency
With internal low RDS(ON) switches, the uP1722 is capable
of delivering 1.3A peak output current over a wide input
†
Typical Quiescent Current: 60uA
voltage range from 2.6V to 5.5V. The output voltage is † Integrated Low RDS(ON) Upper and Lower MOSFET
adjustable from 0.6V/0.5V (uP1722P/uP1722Q) to VIN by
Switches: 300mΩ and 250mΩ
a voltage divider. Other features include internal soft-start, † Current Mode PWM Operation
chip enable, under-voltage, over-temperature and over-
current protections. The uP1722 is available in space-saving
†
Fixed Frequency: 1.5MHz
WDFN2x2-6L and TSOT23-5L packages with fixed or † 100% Maximum Duty Cycle for Lowest Dropout
adjustable output voltage options.
† Internal Soft-Start
Ordering Information † Under-Voltage Protection
Order Number
uP1722PMT5-XX
uP1722QMT5-XX
Package
TSOT23-5L
TopMarking
N45PXX
N45QXX
† Over-Temperature and Over-Current Protection
† Space-Saving WDFN2x2-6L and TSOT23-5L
packages
† RoHS Compliant and Halogen Free
uP1722PDE6-XX WDFN2x2-6L
XX: Output Voltage
Applications
00: adjustable
† Battery-Powered Portable Devices
10: 1.0V; 12: 1.2V; 15: 1.5V; 18: 1.8V;
25: 2.5V; 33: 3.3V
„ MP3 Players
„ Digital Still Cameras
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 requirement. They are halogen-free,
„ Wireless and DSL Modems
RoHS compliant and 100% matte tin (Sn) plating that are
„ Personal Information Appliances
suitable for use in SnPb or Pb-free soldering processes.
„ Cellular Telephones
† 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
uP1722PQ-DS-P0000, May 2012
www.upi-semi.com
1

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