LT3791 datasheet(5/26 Pages) LINER

Part #	LT3791

Description	60V 4-Switch Synchronous Buck-Boost Controller

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3791-1

5

37911fa

For more information www.linear.com/LT3791-1

Typical perForMance characTerisTics

INTVCC Load Regulation

VREF Voltage vs Temperature

VREF Load Regulation

INTVCC Dropout Voltage

vs Current, Temperature

INTVCC Voltage vs Temperature

TA = 25°C, unless otherwise noted.

INTVCC Current Limit

vs Temperature

LDO CURRENT (mA)

0

1.0

1.5

40

37911 G01

0.5

0

10

20

30

2.5

2.0

TA = 150°C

TA = 25°C

TA = –50°C

TEMPERATURE (°C)

–50

5.00

5.10

150

37911 G02

4.90

4.80

0

50

100

–25

25

75

125

5.20

4.95

5.05

4.85

5.15

VIN = 60V

VIN = 12V

TEMPERATURE (°C)

–50

0

10

30

40

50

70

0

50

75

37911 G03

20

80

90

60

–25

25

100 125 150

ILOAD (mA)

0

5.75

30

37911 G04

5.00

4.50

10

20

40

4.25

4.00

6.00

5.50

5.25

4.75

50

60

70

TEMPERATURE (°C)

–50

2.00

2.02

150

37911 G05

1.98

1.96

0

50

100

–25

25

75

125

2.04

1.99

2.01

1.97

2.03

VIN = 60V

VIN = 12V

VIN = 4.7V

IREF (µA)

0

2.00

2.10

400

37911 G06

1.90

1.80

100

200

300

50

150

250

350

2.20

1.95

2.05

1.85

2.15

V(ISP-ISN) Threshold vs VCTRL

V(ISP-ISN) Threshold vs VISP

V(ISP-ISN) Threshold

vs Temperature

VCTRL (V)

0

30

90

100

110

0.4 0.6

1.0 1.2 1.4

37911 G07

10

70

50

20

80

0

60

40

0.2

0.8

1.8

1.6

2.0

VISP (V)

0

98

100

102

30

50

37911 G08

96

94

92

10

20

40

104

106

108

60

TEMPERATURE (°C)

–50

100

104

150

37911 G09

96

92

0

50

100

–25

25

75

125

108

VIN = 12V

98

102

94

106

VISP = 60V

VISP = 12V

VISP = 0V

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