EP5388QI Datasheet, PDF (7/14 Pages) Enpirion, Inc. – 800mA Synchronous Buck Regulator With Integrated Inductor 3mm x 3mm x 1.1mm Package

July 2008
EP5388QI
Transient, V_IN =3.3V, V_OUT = 1.2V, Load = 0-800mA.
Transient, V_IN = 3.3V, V_OUT = 1.8V, Load = 0-800mA.
Startup, V_IN = 3.6V, V_OUT = 1.5V, Load = 500mA.
Enable in light blue; V_OUT in Dark blue.
Shutdown, V_IN = 3.6V, V_OUT = 1.5V, Load = 500mA.
Enable in light blue; V_OUT in Dark blue.
Detailed Description
Functional Overview
The EP5388QI is a complete DCDC converter
solution requiring only two low cost MLCC
capacitors.
MOSFET switches, PWM
controller, Gate-drive, compensation, and
inductor are integrated into the tiny 3mm x
3mm x 1.1mm package to provide the smallest
footprint possible while maintaining high
efficiency, low ripple, and high performance.
The converter uses voltage mode control to
provide the simplest implementation and high
noise immunity. The device operates at a
4MHz switching frequency. The high switching
frequency allows for a wide control loop
bandwidth providing excellent transient
performance. The high switching frequency
further enables the use of very small
components making possible this
unprecedented level of integration.
Enpirion’s proprietary power MOSFET
technology provides very low switching loss at
frequencies of 4 MHz and higher, allowing for
the use of very small internal components, and
high performance. Integration of the magnetics
virtually eliminates the design/layout issues
normally associated with switch-mode DCDC
converters. All of this enables much easier
and faster incorporation into various
applications to meet demanding requirements.
©Enpirion 2008 all rights reserved, E&OE
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