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EN5339QI-E

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

Enpirion, Inc. 

EN5339QI

Electrical Characteristics

NOTE: VIN = 5V, Minimum and Maximum values are over operating ambient temperature range unless otherwise noted.

Typical values are at TA = 25°C.

PARAMETER

Operating Input Voltage

Feedback Node Initial

Accuracy

Output Variation (Note 3)

(Line, Load, Temperature)

VFB, ENABLE, TST0/1/2

Pin Input Current (Note 4)

Shutdown Current

Under Voltage Lock-out –

VIN Rising

Under Voltage Lock-out –

tVIN Falling

Soft-start Time

SYMBOL

VIN

VVFB

VOUT

VUVLOR

VUVLOF

TEST CONDITIONS

TA = 25°C; VIN = 5V

ILOAD = 100 mA

2.4V ≤ VIN ≤ 5.5V

0 ≤ ILOAD ≤ 3A

ENABLE Low

Voltage Above Which UVLO is

Not Asserted

Voltage Below Which UVLO is

Asserted

Time from Enable High (Note 4)

MIN

2.4

0.588

TYP MAX

5.5

0.600 0.612

UNITS

V

V

-3

+3

%

+/-40

nA

20

µA

2.2

V

2.1

V

0.91 1.40 1.89

ms

Dropout Resistance

150 300

mΩ

ENABLE Voltage

Threshold

POK Threshold

POK Threshold

POK Low Voltage

POK Pin VOH Leakage

Current

Current Limit Threshold

Operating Frequency

Output Ripple Voltage

FOSC

VRIPPLE

Logic Low

Logic High

VOUT Rising

VOUT Falling

ISINK = 1 mA

POK High

2.4V ≤ VIN ≤ 5.5V

COUT = 3 x 22 µF 0805 X5R

MLCC, VOUT = 3.3 V, ILOAD = 3A

COUT = 3 x 22 µF 0805 X5R

MLCC, VOUT = 1.8 V, ILOAD = 3A

0.0

0.4

1.4

VIN

92

90

0.15 0.4

0.5

2

3.5

5

3.2

4.2

5.5

V

%

%

V

µA

A

MHz

mVP-P

mVP-P

Note 3: Output voltage variation is based on using 0.1% accuracy resistor values.

Note 4: Parameter not production tested but is guaranteed by design.

©Enpirion 2012 all rights reserved, E&OE

06903

September 12, 2012

www.enpirion.com, Page 5

Rev: B

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