EN5336QI
3A Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
External Feedback Output Voltage Programmin
g
Description
The EN5336QI is a Power System on Silicon DC-
DC converter. It is specifically designed to meet
the precise voltage and fast transient
requirements of present and future high-
performance, low-power processor, DSP, FPGA,
memory boards and system level applications in
a distributed power architecture. Advanced circuit
techniques, ultra high switching frequency, and
very advanced, high-density, integrated circuit
and proprietary inductor technology deliver high-
quality, ultra compact, non-isolated DC-DC
conversion. Operating this converter requires
only small value input and output ceramic
capacitors, a soft-start capacitor and a resistor
divider for voltage feedback to set the output
voltage to the desired value.
The Enpirion solution significantly helps in
system design and productivity by offering greatly
simplified
board
design,
layout
and
manufacturing requirements. In addition, a
reduction in the number of vendors required for
the complete power solution helps to enable an
overall system cost savings.
All Enpirion products are RoHS compliant and
lead-free manufacturing environment compatible.
Typical Application Circuit
Features
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Integrated INDUCTOR, MOSFETS, Controller
Footprint 1/3
rd
that of competing solutions.
Minimum external components.
Up to 10W continuous output power.
5MHz operating frequency.
High efficiency, up to 93%.
V
OUT
accuracy 3% over line, load and temp.
Wide input voltage range of 2.375V to 5.5V.
External resistor divider for voltage feedback
and output voltage selection.
Output enable pin and Power OK signal.
Programmable soft-start time.
Programmable over-current protection.
Thermal shutdown, short circuit, and UVLO
RoHS compliant, MSL level 3, 260C reflow.
Applications
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Point of load regulation for low-power
processors, network processors, DSPs,
FPGAs, and ASICs
Notebook computers, servers, workstations
Broadband, networking, LAN/WAN, optical
Low voltage, distributed power architectures
with 2.5V, 3.3V or 5V rails
DSL, STB, DVR, DTV, iPC
Ripple sensitive applications
V
IN
22µF
PVIN
AVIN
POK
VOUT
V
OUT
Ordering Information
XOV
SS
AGND
47µF
XFB
PGND
15 nF
Part Number
EN5336QI-T
EN5336QI-E
Temp Rating
(°
C)
Package
-40 to +85
44-pin QFN T&R
QFN Evaluation Board
Figure 1. Simple Layout.
1
www.enpirion.com
ENPIRION [ ENPIRION, INC. ]
