EP5348UI
400mA Synchronous Buck Regulator
with Integrated Inductor
RoHS Compliant; Halogen Free
Description
The EP5348UI delivers the optimal trade-off
between footprint and efficiency. It is a perfect
alternative to replace less efficient LDOs in space
constrained applications that require improved
efficiency.
The EP5348UI is a 400mA PowerSoC which
integrates
MOSFET
switches,
control,
compensation, and the magnetics in a micro-
QFN Package. This highly integrated DCDC
solution offers up to 46-points better efficiency
than the comparable LDO.
A significant
reduction in power loss and improved thermals
are achieved. It enables extended battery life
and helps Meet Energy Star requirements.
Features
•
•
•
•
•
•
•
•
•
Integrated Inductor Technology
400mA continuous output current
2.0mm x 1.75mm x 0.9mm uQFN package
Small Solution Footprint
Efficiency, up to 90%
V
OUT
Range 0.6V to V
IN
– V
DROP_OUT
Short circuit and over current protection
UVLO and thermal protection
IC level reliability in a PowerSoC solution
Applications
95
85
75
Efficiency (%)
VIN = 5.0V
VOUT = 1.2V
EP5348UI
LDO
•
65
55
45
35
25
15
0.0
0.1
0.2
Load Current (A)
0.3
Δ
= 46-points
Applications where poor LDO efficiency
creates:
o
Thermal challenges
o
Battery Life challenges
o
Failure to meet Energy Star
requirements
Space-constrained applications
Portable media players and USB peripherals
•
•
PVIN
V
IN
VOUT
AVIN
V
OUT
C
A
R
A
C
OUT
10µF
0603
Integrated magnetics enables a tiny solution
footprint, low output ripple, and high reliability,
while maintaining high efficiency. The complete
solution size is similar to an LDO and much
smaller than a comparable DCDC.
C
IN
2.2µF
0603
0.1µF
C
AVIN
EP5348
ENABLE
AGND
VFB
PGND
R
B
Figure 1: Typical Application Schematic
www.enpirion.com
05721
September 12, 2012
Rev:
C
ENPIRION [ ENPIRION, INC. ]
