Enpirion
®
Power Datasheet
Low Profile Synchronous Buck DC-DC
Converter with Integrated Inductor
Description
The EN5319QI is a highly integrated, low profile,
highly efficient, 1.5A synchronous buck power system
on a chip (PowerSoC
TM
). The device features an
advance integrated inductor, integrated MOSFETs, a
PWM voltage-mode controller,
and internal
compensation providing the smallest possible solution
size.
The EN5319QI is a member of the EN53x9QI family
of pin compatible and interchangeable devices. The
pin compatibility enables an easy to use scalable
family of products covering the load range from 1.5A
up to 3A in a low profile 4mm x 6mm x 1.1mm QFN
package.
The EN5319QI 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.
Altera’s 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. Altera’s Enpirion
products are RoHS compliant and lead-free
manufacturing environment compatible.
Features
•
Integrated Inductor
•
Solution Footprint as Small as 50 mm
2
•
Low Profile, 1.1mm
•
High Reliability Solution: 42,000 Years MTBF
•
High Efficiency, up to 95 %
•
Low Output Ripple Voltage; <4mV
P-P
Typical
•
2.4 V to 5.5 V Input Voltage Range
•
1.5A Continuous Output Current Capability
•
Output Enable and Power OK Signal
•
Pin Compatible w/ EN5329QI 2A and EN5339QI 3A
•
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 Appliances
•
FPGA, ASSP, PLD, ASIC, and Processors
•
Noise Sensitive Applications
Efficiency vs. Output Current
100
100k
POK
90
V
IN
C
IN
10µF
1µF
EFFICIENCY (%)
ENABLE POK
PVIN
TST0
TST1
TST2
PGND
AVIN
AGND
V
OUT
C
OUT
VOUT
80
70
60
50
40
30
20
10
0
0
0.25
0.5
0.75
1
OUTPUT CURRENT (A)
1.25
1.5
CONDITIONS
VIN = 3.3V
VOUT = 2.5V
VOUT = 1.2V
Actual Solution Size
50mm
2
Ca
VFB
PGND
Ra
Rb
2x22µF
(0603)
or
1x22µF
(0805)
Figure 1.
Simplified Applications Circuit
Figure 2.
Highest Efficiency in Smallest Solution Size
1
08325
October 16, 2015
Rev D
ALTERA [ ALTERA CORPORATION ]
