EN5336QI
3A Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
External Feedback Output Voltage Programming
Description
Features
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The EN5336QI is a Power System on Silicon DCDC converter. It is specifically designed to meet
the precise voltage and fast transient
requirements of present and future highperformance, 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 highquality, 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.
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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.
Applications
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All Enpirion products are RoHS compliant and
lead-free manufacturing environment compatible.
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Typical Application Circuit
VIN
PVIN
POK
VOUT
VOUT
XOV
SS
15 nF
XFB
AGND
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
Ordering Information
AVIN
22µF
Integrated INDUCTOR, MOSFETS, Controller
Footprint 1/3rd that of competing solutions.
Minimum external components.
Up to 10W continuous output power.
5MHz operating frequency.
High efficiency, up to 93%.
VOUT accuracy 3% over line, load and temp.
Wide input voltage range of 2.375V to 6.6V.
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.
47µF
PGND
Part Number
EN5336QI
EN5336QI-E
Temp Rating
(°C)
Package
-40 to +85
44-pin QFN T&R
QFN Evaluation Board
Figure 1. Simple Layout.
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04212
06/01/2010
www.enpirion.com
Rev: B
