uP1727R
1.0MHz, 3.0A, High-Efficiency
Synchronous-Rectified Buck Converter
Features
General Description
The uP1727R 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 uP1727R is ideally suitable for
portable devices and USB/PCIE-based interface cards,
where PCB area is especially concerned.
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
With internal low RDS(ON) switches, the uP1727R is capable
of delivering 3.0Aoutput 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.
Integrated Low RDS(ON) Upper and Lower MOSFET
Switches: 70mΩ and 50mΩ
Current Mode PWM Operation
Other features include internal soft-start, chip enable, over-
voltage, under-voltage, over-temperature and over-current
protections. The uP1727R is available in a space-saving
WDFN3x3-10L package.
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
Ordering Information
Order Number
uP1727RDDA
Package Type
WDFN3x3-10L
Top Marking
uP1727R
RoHS Compliant and Halogen Free
Note:
Applications
(1) Please check the sample/production availability with
uPI representatives.
(2) 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.
Battery-Powered Portable Devices
MP3 Players
Notebook Computers
Wireless and DSL Modems
Personal Information Appliances
IP Phones
Pin Configuration
Digital Cameras
LX
LX
1
2
3
4
5
10 VIN
802.11 WLAN Power Supplies
FPGA/ASIC Power Supplies
9
8
7
6
VIN
VDD
NC
LX
GND
Dynamically Adjustable Power Supply for
CDMA/WCDMA Power Amplifiers
POK
EN
FB
USB-Based xDSL Modems and Other Network
Interface Cards
WDFN3x3-10L
Point-of-Load Regulation
uP1727R-DS-F00A0, Mar. 2018
www.upi-semi.com
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