EP5357LUI/EP5357HUI
600mA Synchronous Buck Regulator
with Integrated Inductor
RoHS Compliant; Halogen Free
Description
The EP5357xUI (x = L or H) is a 600mA
PowerSOC. The EP5357xUI integrates MOSFET
switches, control, compensation, and the
magnetics in an advanced 2.5mm x 2.25mm
QFN Package.
Integrated magnetics enables a tiny solution
footprint, low output ripple, low part-count, and
high reliability, while maintaining high efficiency.
The complete solution can be implemented in as
little as 10mm
2
.
A proprietary light load mode (LLM) provides high
efficiency in light load conditions.
The EP5357xUI uses a 3-pin VID to easily select
the output voltage setting.
Output voltage
settings are available in 2 optimized ranges
providing coverage for typical V
OUT
settings.
The VID pins can be changed on the fly for fast
dynamic voltage scaling. EP5357LUI further has
the option to use an external voltage divider.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Integrated Inductor Technology
2.5mm x 2.25mm x 1.1mm package
Total Solution Footprint 10mm
2
Low V
OUT
ripple for RF compatibility
High efficiency, up to 93%
600mA continuous output current
55µA quiescent current
Less than 1µA standby current
5 MHz switching frequency
3 pin VID for glitch free voltage scaling
V
OUT
Range 0.6V to V
IN
– 0.25V
Short circuit and over current protection
UVLO and thermal protection
IC level reliability in a PowerSOC solution
Wireless and RF applications
Wireless broad band data cards
Smart phone and portable media players
Advanced Low Power Processors, DSP, IO,
Memory, Video, Multimedia Engines
AVIN
10uF
Application
4.7uF
PVIN
4.7uF
VSO
VS1
VS2
VOUT
2.25mm
EP5357xUI
EP5357LUI
VSENSE
VFB
AGND
PGND
10uF
ENABLE
LLM
4.75mm
Figure 1: Total Solution Footprint.
Figure 2: Typical Application Schematic.
www.enpirion.com
03409
September 12, 2012
Rev:
D
ENPIRION [ ENPIRION, INC. ]
