TPS54122RHLT datasheet(10/30 Pages) TI1

No. de pieza	TPS54122RHLT

Descripción Electrónicos	Dual-Output 3-A Quiet Supply with Integrated DC-DC Converter and Low-Noise LDO

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Fabricante Electrónico	TI1 [Texas Instruments]

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1.05V

1.2V

1.5V

1.8V

2.5V

50

55

60

65

70

75

80

85

90

95

100

0

0.5

1

1.5

2

2.5

3

I

-OutputCurrent- A

O

0

25

50

75

100

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

V

(SENSE) (V)

V(sense) Falling

V(sense) Rising

C013

300

400

500

600

700

800

900

1,000

100

200

300

400

500

600

700

800

900

R

RT (k)

C011

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

50

70

90

110

130

150

170

190

R

RT (k)

C012

2.1

2.2

2.3

2.4

2.5

-40

-20

0

20

40

60

80

100

120

140

Temperature (

SC)

C007

90

92

94

96

98

100

102

104

106

108

110

-40

-20

0

20

40

60

80

100

120

140

Temperature (

SC)

PG Threshold Low Rising

PG Threshold High Rising

PG Threshold High Falling

PG Threshold Low Falling

C008

TPS54122

SBVS221A – NOVEMBER 2013 – REVISED NOVEMBER 2013

www.ti.com

TYPICAL CHARACTERISTICS (continued)

At V(VIN) = V(BIAS)= V(LDOEN)= 5 V, V(LDOIN) = DC-DC_OUT = 2.1 V, V(OUT) = 1.8 V, I(OUT) = 50 mA, V(EN) = floating,

COUT = 100 μF, and CSS = CNR = 0.01 µF (see Figure 25), unless otherwise noted.

Figure 19. DC-DC SOFT-START CURRENT vs

Figure 20. PG THRESHOLD vs TEMPERATURE

TEMPERATURE

Figure 21. DC-DC SWITCHING FREQUENCY vs RRT

Figure 22. DC-DC SWITCHING FREQUENCY vs RRT

Figure 23. SWITCHING FREQUENCY vs VSENSE

Figure 24. DC-DC Efficiency vs Output Current

10

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TPS54122RHLT Datasheet(PDF) 10 Page - Texas Instruments

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