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uP1712 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 uP1712
部品説明 High-Efficiency Synchronous-Rectified Buck Converter
メーカ uPI Semiconductor
ロゴ uPI Semiconductor ロゴ 



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uP1712 Datasheet, uP1712 PDF,ピン配置, 機能
uP1712
1MHz, 3.0A, High-Efficiency
Synchronous-Rectified Buck Converter
General Description
Features
The uP1712 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 uP1712 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 uP1712 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 V by a voltage divider. Other features include
IN
internal soft-start, chip enable, over-voltage, under-
voltage, over-temperature and over-current protections.
The uP1712 is available in a space-saving WQFN3x3-
16L or PSOP-8L packages.
Applications
† 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
† 2.6V to 5.5V Input Voltage Range
† Adjustable Output from 0.6V to VIN
† Guaranteed 3.0A Output Current
† Accurate Reference: 0.6V (+ 1.5%)
† Up to 95% Conversion Efficiency
† Low Quiescent Current
† Integrated Low RDS(ON) Upper and Lower
MOSFET Switches: 85mΩ and 75mΩ
† Current Mode PWM Operation
† Fixed Frequency: 1MHz
† 100% Maximum Duty Cycle for Lowest Dropout
† Internal Soft-Start
† No Schottky Diode Required
† Over-Voltage Protection
† Under-Voltage Protection for uP1712PQDD and
uP1712PSU8 only
† Over-Temperature and Over-Current Protection
† WQFN3x3-16L or PSOP-8L Packages
† RoHS Compliant and Halogen Free
Ordering Information
Order Number Package Type
Top Marking
uP1712PQDD WQFN3x3-16L
uP1712P
uP1712PSU8
uP1712QSU8
PSOP-8L
uP1712P
uP1712Q
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 requirement. They are halogen-free,
RoHS compliant and 100% matte tin (Sn) plating that are
suitable for use in SnPb or Pb-free soldering processes.
Pin Configuration
PGND 1
PGND 2
PGND 3
FB 4
PGND
12 VIN
11 VIN
10 VIN
9 VCC
WQFN3x3-16L
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. P01, File Name: uP1712-DS-P0100
AGND
NC
EN
POK
18
27
PGND
36
45
PSOP - 8
FB
PGND
LX
VIN
1

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