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EN5339QI

3A PowerSoC Low Profile Synchronous Buck DC-DC Converter with Integrated Inductor

Altera Corporation 

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; <5mVP-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

VIN

CIN

22µF

1µF

100k

ENABLE POK VOUT

PVIN

TST0

TST1

EN5339QI

Ca

TST2

PGND

AVIN

VFB

AGND PGND

POK

Ra

Rb

VOUT

COUT

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

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