LT1579CS-3.3 datasheet(6/20 Pages) LINER

Part #	LT1579CS-3.3

Description	300mA Dual Input Smart Battery Backup Regulator

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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6

LT1579

TYPICAL PERFORMANCE CHARACTERISTICS

Input and Ground Pin Current

VIN1 – VOUT (V)

0

4

8

12

2

6

10

0

200

400

600

100

300

500

0

0.2

0.4

0.6

1579 G09

0.8

–0.1

–0.2

0.1

0.3

0.5

0.7

IIN2

IIN1

VOUT = 5V

VIN2 = 6V

ILOAD = 10mA

IGND

Input and Ground Pin Current

VIN1 – VOUT (V)

0

0.4

0.8

1.2

0.2

0.6

1.0

0

100

200

300

50

150

250

0

0.2

0.4

0.6

1579 G08

0.8

–0.1

–0.2

0.1

0.3

0.5

0.7

IIN2

IIN1

VOUT = 5V

VIN2 = 6V

ILOAD = 1mA

IGND

VIN1 – VOUT (V)

0

20

40

60

10

30

50

0

0.4

0.8

1.2

0.2

0.6

1.0

0

0.2

0.4

0.6

1579 G10

0.8

–0.1

–0.2

0.1

0.3

0.5

0.7

IIN2

IIN1

VOUT = 5V

VIN2 = 6V

ILOAD = 50mA

IGND

VIN1 – VOUT (V)

0

40

80

120

20

60

100

0

1.0

2.0

3.0

0.5

1.5

2.5

0

0.2

0.4

0.6

1579 G11

0.8

–0.1

–0.2

0.1

0.3

0.5

0.7

IIN2

IIN1

VOUT = 5V

VIN2 = 6V

ILOAD = 100mA

IGND

Input and Ground Pin Current

VIN1 – VOUT (V)

0

40

80

60

120

160

20

100

140

0

1.0

2.0

4.0

3.5

0.5

1.5

3.0

2.5

0

0.2

0.4

0.6

1579 G12

0.8

–0.1

–0.2

0.1

0.3

0.5

0.7

VOUT = 5V

VIN2 = 6V

ILOAD = 150mA

IGND

IIN2

IIN1

VIN1 – VOUT (V)

0

100

200

150

300

350

50

250

0

4

8

14

2

6

12

10

0

0.2

0.4

0.6

1579 G13

0.8

–0.1

–0.2

0.1

0.3

0.5

0.7

VOUT = 5V

VIN2 = 6V

ILOAD = 300mA

IGND

IIN2

IIN1

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LT1579CS-3.3 Datasheet(PDF) 6 Page - Linear Technology

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Similar Part No. - LT1579CS-3.3

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