EV1340QI Datasheet, PDF (1/20 Pages) Enpirion, Inc. – 5A Synchronous Highly Integrated DC-DC DDR2/3/QDRTM Memory Termination and Low VIN Power SoC

EV1340QI
5A Synchronous Highly Integrated DC-DC
DDR2/3/QDR^TM Memory Termination and Low VIN
Power SoC
Description
The EV1340 is a Power System on a Chip
(PowerSoC) DC to DC converter in a 54 pin QFN
that is optimized for DDR2, DDR3, and QDR^TM
VTT applications. It requires a nominal 3.3V
power supply (AVIN) for the controller, and an
input supply (VDDQ) voltage range of 1.0V to
1.8V. It provides a tightly regulated and very
stable output voltage (VTT) which tracks VDDQ
while sinking and sourcing up to 5A of output
current. In addition, the EV1340 is an excellent
solution for general low V_IN applications where
high efficiency is critical.
The EV1340 utilizes innovative circuit
techniques, high-density circuit integrations and
optimized switching frequency along with
Enpirion’s proprietary inductor technology to
deliver high-quality, ultra compact, non-isolated
DC-DC conversion.
The complete power converter solution enhances
productivity by offering greatly simplified board
design, layout and manufacturing requirements.
Features
• High Efficiency, Up to 91%
• Output Voltage Can Track VDDQ to within
+/- 1.5%
• Source and Sink Capability up to 5A
• 125mm² Total Solution Size
• VDDQ Range (1.0V to 1.8V )
• Monotonic Startup With Pre-bias
• Programmable Soft-Start Time
• Thermal Shutdown Protection
• Over Current and Short Circuit Protection
• Under-Voltage Protection
• RoHS Compliant, MSL level 3, 260°C reflow
Applications
• Bus Termination: DDR2, DDR3, & QDR™
Memory
• General Low V_IN Applications
0402
0402
0402
0402
0402
0402
0402
0402
0402
EV1340QI
10 mm x 5.5 mm
100µF
1206
47µF
0805
100µF
1206
Figure 1: EV1340 Total Solution Size ~ 125mm²
(not to scale)
Figure 2: Typical V_TT Application Schematic (V_DDQ is
the memory core voltage; V_TT is memory
termination voltage that tracks V_DDQ)
06218
10/19/2011
www.enpirion.com
Rev: A