TPS54339E_15 datasheet(9/22 Pages) TI

Part #	TPS54339E

Description	4.5V to 23V Input, 3-A Synchronous Step-Down SWIFT??Converter with Eco-Mode?

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Manufacturer	TI [Texas Instruments]

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9 / 22 page

0.750

0.755

0.760

0.765

0.770

0.775

0.780

±50

0

50

100

150

T

j - Junction Temperature (ƒC)

C010

I

O = 1 A

0

100

200

300

400

500

600

700

800

0.01

0.10

1.00

10.00

I

O - Output Current (A)

C009

V

O = 1.8 V

V

O = 3.3 V

V

O = 1.05 V

0

10

20

30

40

50

60

70

80

90

100

0.001

0.01

0.1

I

OUT - Output Current (A)

C007

V

O = 5 V

V

O = 3.3 V

V

O = 1.8 V

400

450

500

550

600

650

700

750

800

850

900

0

5

10

15

20

25

V

IN - Input Voltage (V)

C008

V

O = 3.3 V

V

O = 5.0 V

V

O = 1.8 V

V

O = 1.5 V

V

O = 1.05 V

40

50

60

70

80

90

100

0.0

0.5

1.0

1.5

2.0

2.5

3.0

I

OUT - Output Current (A)

C006

V

O = 5 V

V

O = 3.3 V

V

O = 1.8 V

EN (10 V/div)

VREG5 (5 V/div)

400 us/div

Vout (0.5 V/div)

TPS54339E

www.ti.com

SLVSBM0A – DECEMBER 2012 – REVISED DECEMBER 2012

TYPICAL CHARACTERISTICS

VIN = 12 V, TA = 25°C (unless otherwise noted).

Figure 7. START-UP WAVE FORM

Figure 8. EFFICIENCY vs OUTPUT CURRENT

Figure 9. LIGHT LOAD EFFICIENCY vs OUTPUT CURRENT

Figure 10. SWITCHING FREQUENCY vs

INPUT VOLTAGE (IO = 1 A)

Figure 11. SWITCHING FREQUENCY vs OUTPUT CURRENT

Figure 12. VFB VOLTAGE vs JUNCTION

TEMPERATURE (IO = 1 A)

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