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EP53A7LQ Datasheet(PDF) 1 Page - Enpirion, Inc.

Part No. EP53A7LQ
Description  1000mA Synchronous Buck Regulator with Integrated Inductor
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Maker  ENPIRION [Enpirion, Inc.]
Homepage  http://www.enpirion.com
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EP53A7LQ Datasheet(HTML) 1 Page - Enpirion, Inc.

 
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01543
11/11/2009
Rev:B
EP53A7LQI/EP53A7HQI
1000mA Synchronous Buck Regulator
with Integrated Inductor
RoHS Compliant; Halogen Free
www.enpirion.com
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 VOUT 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.
EP53A7xQI
4.7uF
10uF
6mm
3.5mm
100 Ohm
Figure 1: Total Solution Footprint
Features
• Integrated Inductor Technology
• 3mm x 3mm x 1.1mm QFN package
• Total Solution Footprint < 21mm2
• Low VOUT 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
• VOUT Range 0.6V to VIN – 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
VIN
VSENSE
PVIN
VS1
VS2
VS0
10
μF
4.7
μF
VOUT
VOUT
AGND
ENABLE
VFB
PGND
AVIN
LLM
100 ohm
Figure 2: Typical Application Schematic


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