LM3370 datasheet(9/33 Pages) TI1

No. de pieza	LM3370

Descripción Electrónicos	Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function

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Fabricante Electrónico	TI1 [Texas Instruments]

Página de inicio	http://www.ti.com

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9 / 33 page

0.10

1.00

10.00

100.00

1000.00

LOAD (mA)

0

10

20

30

40

50

60

70

80

90

100

4.5V

5.5V

2.7V

3.6V

0.10

1.00

10.00

100.00

1000.00

LOAD (mA)

0

10

20

30

40

50

60

70

80

90

100

4.5V

5.5V

3.6V

2.7V

2.7

3.4

4.1

4.8

5.5

1.8

1.89

1.98

2.07

2.16

2.25

VIN (V)

Buck1 = Buck2

100

200

300

400

500

600

LOAD (mA)

1

1.05

1.1

1.15

1.2

1.25

1.3

1.35

1.4

0

1.8V

1.5

1.6

1.7

1.8

1.9

1.2V

2.7

3.4

4.1

4.8

5.5

VIN (V)

0

50

100

150

200

250

300

350

400

450

500

NFET

PFET

3.2

3.7

4.2

4.7

5.2

5.5

VIN (V)

700

800

900

1000

1100

1200

2.7

1150

1050

950

850

750

85°C

25°C

-40°C

LM3370

www.ti.com

SNVS406M – NOVEMBER 2005 – REVISED AUGUST 2011

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

LM3370SD/TL, Circuit of Typical Application Circuit (page 1), VIN = 3.6V, VOUT1 = 1.5V & VOUT2 = 2.5V, L = 2.2 µH

(NR3015T2R2M), CIN = 4.7 µF (0805) and COUT = 10 µF (0805) & TA = 25°C, unless otherwise noted.

RDS_ON (LLP)

Current Limit

vs.

VIN

Output Voltage

Switching Frequency

vs.

Output Current

VIN

VIN = 3.6V (Forced PWM)

Efficiency

vs.

Output Current

Forced PWM Mode, VOUT1 = 1.2V

Forced PWM Mode, VOUT1 = 1.8V

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