EN5330
3A Voltage Mode Synchronous Buck PWM
DC-DC Converter
Description
The EN5330 is a Power System on a Chip 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
three external components that include small value
input and output ceramic capacitors and a soft-start
capacitor.
The EN5330 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.
Features
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Up to 10W output power (at V
OUT
=3.3V)
External inductor is NOT required
Lead-Free packaging
5MHz operating frequency
More than 90% efficient
V
OUT
accuracy of 2% over line, load and
temperature
1/3 the board area of discrete component solutions
Very fast transient response
All high speed switching signals contained inside
the part
Wide input voltage range of 2.375V to 5.5V
Digital voltage selector with options for common
output voltages from 0.8V to 3.3V
External resistor divider and OVP option for
output voltages from 0.8V to V
IN
-600mV
Output enable pin and Power OK signal
Programmable soft-start time
Over-current protection
Thermal shutdown, short circuit, output over-
voltage and input under-voltage protection
Applications
Typical Application Circuit
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V
IN
22µF
PVIN
AVIN
VS0
VS1
VS2
VID Output
Voltage Select
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POK
SS
Servers, workstations and PCs
Broadband, networking, LAN/WAN, optical
telecommunications equipment
Point of load regulation for low-power processors,
network processors, DSPs, FPGAs, and ASICs
Low voltage, distributed power architectures with
2.5V, 3.3V or 5V rails
VSENSE
VOUT
V
OUT
47µF
Ordering Information
Part Number
EN5330DC
EN5330DC-T
EN5330DI
EN5330DI-T
EN5330DC-E
Temp Rating (°C)
Package
0 to 70
36-pin DFN
0 to 70
36-pin DFN T&R
-40 to +85
36-pin DFN
-40 to +85
36-pin DFN T&R
DFN Evaluation Board
15nF
AGND
PGND
Rev 1.0 – July 2005
1
www.enpirion.com
ENPIRION [ ENPIRION, INC. ]
