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UP1784PSW8

更新时间： 2024-01-29 12:10:47
品牌 Logo 应用领域
力智 - UPI /
页数 文件大小 规格书
14页 185K
描述
Dual 1.5MHz, 1.3A, High-Efficiency Synchronous-Rectified Buck Converter

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UP1784PSW8 数据手册

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uP1784  
Dual 1.5MHz, 1.3A, High-Efficiency  
Synchronous-Rectified Buck Converter  
Features  
General Description  
The uP1784 is a dual high efficiency synchronous-rectified  
buck converter with internal power switches. Fixed 1.5MHz  
PWM operation allows possible smallest output ripple and  
external component size. With high conversion efficiency  
and small package, the uP1784 is ideally suitable for  
portable devices and USB/PCIE-based interface cards  
where PCB area is especially concerned. The uP1784 can  
run at 100% duty cycle, maximizing the battery life.  
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2.6V to 5.5V Input Voltage Range  
Adjustable Output from 0.6V to VIN  
1.3A Peak Output Current on Each Channel  
Accurate Reference: 0.6V (+/- 2%)  
Up to 95% Conversion Efficiency  
Low Quiescent Current: 60uA for Each Channel  
Integrated Low RDS(ON) Upper and Lower  
With internal low RDS(ON) switches, each converter is  
capable of delivering 1.3Apeak 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, under-  
voltage, over-temperature and over-current protections. The  
uP1784 is available in a space-saving VDFN3x3-10L and  
WDFN3x3-12L and PSOP-8L package.  
MOSFET Switches: 300mΩ and 250mΩ  
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Current Mode PWM Operation  
Constant 1.5MHz Out of Phase Operation  
100% Maximum Duty Cycle for Lowest Dropout  
Internal Soft-Start  
Under-Voltage Protection  
Over-Temperature and Over-Current Protection  
Space Saving VDFN3x3 - 10L, WDFN3x3 - 12L  
and PSOP - 8L Package  
Applications  
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Battery-Powered Portable Devices  
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RoHS Compliant and Halogen Free  
„ MP3 Players  
Ordering Information  
„ Digital Still Cameras  
„ Wireless and DSL Modems  
„ Personal Information Appliances  
„ Cellular Telephones  
Order Number  
uP1784PDAA  
uP1784PDGB  
uP1784PSW8  
Package Type  
VDFN3x3 - 10L  
WDFN3x3 - 12L  
PSOP - 8L  
Top Marking  
uP1784P  
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802.11 WLAN Power Supplies  
FPGA/ASIC Power Supplies  
Status:  
In Production: uP1784PDAA  
Others: Please check the sample/production availability  
with uPI representatives.  
Dynamically Adjustable Power Supply for  
CDMA/WCSMA Power Amplifiers  
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USB-Based xDSL Modems and Other Network  
Interface Cards  
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  
12  
11  
VIN2  
LX2  
1
2
3
4
5
6
EN2  
NC  
10  
9
EN1  
FB1  
1
2
3
4
5
LX1  
LX1  
EN1  
FB2  
1
2
3
4
8
7
6
5
VIN1  
FB1  
EN2  
LX2  
GND1  
VIN1  
FB2  
GND1  
FB1  
10 FB2  
GND  
VIN2  
GND2  
LX2  
GND  
8
GND  
9
8
7
GND2  
7
NC  
LX1  
6
EN2  
VIN2  
EN1  
VIN1  
PSOP-8L  
WDFN3x3 - 12L  
VDFN3x3 – 10L  
uP1784-DS-F0000, Oct. 2013  
www.upi-semi.com  
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