LM3224_15 datasheet(6/27 Pages) TI

No de pièce	LM3224

Description	LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter

Download	27 Pages

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Fabricant	TI [Texas Instruments]

Site Internet	http://www.ti.com

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2.6

3.4 3.8

5.4

7.0

0.05

0.07

0.11

0.13

0.15

0.17

0.19

0.21

0.23

INPUT VOLTAGE (V)

0.09

3.0

4.2 4.6 5.0

5.8 6.2 6.6

TA = 85

oC

ISW = 1.5A

TA = -40

oC

TA = 25

oC

2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

INPUT VOLTAGE (V)

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

2.0

TJ = -40

oC

TJ = 25

oC

TJ = 125

oC

0

1

2

3

4

5

6

7

8

2.6 3.0 3.4 3.8 4.2 4.6 5.0 5.4 5.8 6.2 6.6 7.0

FSLCT VOLTAGE (V)

TJ = 125

oC

FSLCT = VIN

TJ = -40

oC

TJ =

25

o C

-40 -25 -10 5 20 35 50 65 80 95 110

0

10

20

30

40

50

60

70

TEMPERATURE (

oC)

125

VIN = 2.7V

VIN = 7.0V

FB = 1.265V

10.2

10.4

10.6

10.8

11.0

11.2

11.4

11.6

11.8

-40 -25 -10

5

20

35

50

65

80

95 110 125

TEMPERATURE (

oC)

VIN = 7.0V

VIN = 2.7V

0.0

2.0

4.0

6.0

7.0

0

1

2

3

4

5

6

7

SHDN PIN VOLTAGE (V)

1.0

3.0

5.0

TJ = -40

oC

T J

= 2

5

o

C

TJ = 125

oC

LM3224

SNVS277C – DECEMBER 2004 – REVISED MARCH 2013

www.ti.com

Typical Performance Characteristics

SHDN Pin Current vs. SHDN Pin Voltage

SS Pin Current vs. Temperature

Figure 2.

Figure 3.

FSLCT Pin Current vs. FSLCT Pin Voltage

FB Pin Current vs. Temperature

Figure 4.

Figure 5.

NMOS RDSON vs. Input Voltage

615kHz Non-switching IQ vs. Input Voltage

Figure 6.

Figure 7.

6

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