EP53A8LQI Datasheet, PDF (1/14 Pages) Enpirion, Inc. – 1000mA Synchronous Buck Regulator with Integrated Inductor

EP53A8LQI/EP53A8HQI
1000mA Synchronous Buck Regulator
with Integrated Inductor
RoHS Compliant; Halogen Free
Description
The EP53A8LQI and EP53A8HQI are a 1000mA
PowerSOC. The device integrates MOSFET
switches, control, compensation, and the
Inductor in an advanced 3mm x 3mm QFN
Package.
Integrated inductor ensures the complete power
solution is fully characterized with the inductor
carefully matched to the silicon and
compensation network. . It 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 21mm².
The EP53A8xQI 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. EP53A8LQI further has
the option to use an external voltage divider.
3.5mm
4.7uF
100 Ohm
6mm
EP53A8xQI
Features
• Integrated Inductor Technology
• 3mm x 3mm x 1.1mm QFN package
• Total Solution Footprint ~ 21mm²
• Low V_OUT ripple for RF compatibility
• High efficiency, up to 94%
• 1000mA continuous output 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 – 0.5V
• Short circuit and over current protection
• UVLO and thermal protection
• IC level reliability in a PowerSOC solution
Application
• Portable wireless and RF applications
• Wireless broad band data cards
• Solid state storage applications
• Noise and space sensitive applications
100 ohm
V_IN
4.7µF
0603
PVIN
V_OUT
AVIN
V_SENSE
ENABLE
V_FB
VS0
VS1
VS2
PGND AGND
V_OUT
10µF
0805
10uF
Figure 1: Total Solution Footprint.
Figure 2: Typical Application Circuit.
03651
12/16/2009
www.enpirion.com
Rev:B