EN5339QI Datasheet, PDF (1/20 Pages) Enpirion, Inc. – 3A Low Profile Synchronous Buck DC-DC Converter with Integrated Inductor

Enpirion^® Power Datasheet
EN5339QI 3A PowerSoC
Low Profile Synchronous Buck DC-DC
Converter with Integrated Inductor
Description
The EN5339QI is a highly integrated, low profile,
highly efficient, 3A synchronous buck power system
on a chip (PowerSoC). The device features an
advance integrated inductor, integrated MOSFETs, a
PWM voltage-mode controller, and internal
compensation providing the smallest possible solution
size.
The EN5339QI PowerSoC is designed specifically to
meet the driving demand for higher power density by
providing a fully integrated buck converter into a tiny
4x6x1.1mm 24-pin QFN package. It features high
efficiency, excellent line and load regulation and
guarantees the full 3A output current over
temperature.
The EN5339QI operates at high switching frequency
and allows for the use of tiny MLCC capacitors. It also
enables a very wide control loop bandwidth providing
excellent transient performance and reduced output
impedance. The internal compensation is designed
for unconditional stability across all operating
conditions.
The Altera Enpirion integrated inductor solution
significantly helps to reduce noise. The complete
power converter solution enhances productivity by
offering greatly simplified board design, layout and
manufacturing requirements. All Altera Enpirion
products are RoHS compliant and lead-free
manufacturing environment compatible.
Features
• Integrated Inductor
• Solution Footprint as Small as 55 mm²
• Low Profile, 1.1mm
• High Reliability Solution: 280k Years MTBF
• High Efficiency, up to 95%
• Low Output Ripple Voltage; <5mV_P-P Typical
• ±3% Output Variation Over Line, Load, Temp
• 2.4 V to 5.5 V Input Voltage Range
• 3A Continuous Output Current Capability
• Output Enable and Power OK Signal
• Under Voltage Lockout, Over Current, Short Circuit,
and Thermal Protection
• RoHS Compliant; Halogen Free; 260°C Reflow
Applications
• Applications with Low Profile Requirement such as
SSD and Embedded Computing
• SAN/NAS Accelerator Appliance
• Controllers, Raid, Processors, Network Processors,
DSPs’ FPGAs, and ASICs
• Noise Sensitive Applications
V_IN
C_IN
22µF
1µF
100k
ENABLE POK VOUT
PVIN
TST0
TST1
EN5339QI
Ca
TST2
PGND
AVIN
VFB
AGND PGND
POK
Ra
Rb
V_OUT
C_OUT
3x 22µF
or
2x 47µF
Figure 1. Simplified Applications Circuit
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs. Output Current
CONDITIONS
VIN = 3.3V
VOUT = 2.5V
VOUT = 1.2V
Actual Solution Size
55mm²
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT (A)
Figure 2. Highest Efficiency in Smallest Solution Size
06903
June 26, 2015
www.altera.com/enpirion Page 1
Rev E