EP53A7LQI Datasheet, PDF (1/19 Pages) Altera Corporation – 1A PowerSoC Light Load Mode Buck Regulator with Integrated Inductor

Enpirion^® Power Datasheet
EP53A7LQI/EP53A7HQI 1A PowerSoC
Light Load Mode Buck Regulator
with Integrated Inductor
Description
The EP53A7xQI (x = L or H) is a 1000mA
PowerSOC. The EP53A7xQI integrates MOSFET
switches, control, compensation, and the
magnetics in an advanced 3mm x 3mm 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 21mm².
A proprietary light load mode (LLM) provides high
efficiency in light load conditions.
The EP53A7xQI 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. EP53A7LQI further has
the option to use an external voltage divider.
The EP53A7xQI offers the optimal combination
of very small solution footprint and advanced
performance features.
3.5mm
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
• 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 – 0.5V
• Short circuit and over current protection
• UVLO and thermal protection
• IC level reliability in a PowerSOC solution
Application
• Portable wireless and RF applications
• Solid state storage applications
• Space constrained applications requiring high
efficiency and very small solution size
4.7uF
100 Ohm
6mm
EP53A7xQI
100 ohm
V_IN
4.7µF
PVIN
V_OUT
AVIN
V_SENSE
ENABLE
LLM
VS0
V_FB
VS1
VS2
PGND AGND
V_OUT
10µF
10uF
Figure 1: Total Solution Footprint
Figure 2: Typical Application Schematic
01543
October 11, 2013
www.altera.com/enpirion
Rev D