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EN5310 Fiches technique(PDF) 1 Page - Enpirion, Inc.

No de pièce EN5310
Description  1A Voltage Mode Synchronous Buck PWM DC-DC Converter
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Fabricant  ENPIRION [Enpirion, Inc.]
Site Internet  http://www.enpirion.com
Logo ENPIRION - Enpirion, Inc.

EN5310 Fiches technique(HTML) 1 Page - Enpirion, Inc.

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Rev 0.95 – March 2005
www.enpirion.com
1
ENPIRION
EN5310
1A Voltage Mode Synchronous Buck PWM
DC-DC Converter
Description
The EN5310 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 EN5310 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.
Typical Application Circuit
VID Output
Voltage Select
V
OUT
V
IN
VSENSE
22µF
10µF
15nF
VOUT
VS0
VS1
VS2
POK
PGND
AGND
SS
PVIN
AVIN
Features
• 1000mA output current capacity
• External inductor is NOT required
• Lead-Free packaging
• 5MHz operating frequency
• More than 90% efficient
• VOUT accuracy of 2% over line, load and
temperature
• 1/2 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
programming output voltages from 0.9V to 4.0V
• Output enable pin and Power OK signal
• Programmable soft-start time
• Programmable over-current protection
• Thermal shutdown, short circuit, over-voltage and
under-voltage protection
Applications
• VOIP phones, video telephones
• 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
Ordering Information
Part Number
Temp Rating (°C)
Package
EN5310DC
0 to 70
36-pin DFN
EN5310DC-T
0 to 70
36-pin DFN T&R
EN5310DI
-40 to +85
36-pin DFN
EN5310DI-T
-40 to +85
36-pin DFN T&R
EN5310DC-E
DFN Evaluation Board


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