LTC3860IUHPBF datasheet(5/36 Pages) LINER

Part #	LTC3860IUHPBF

Description	Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC3860

3860f

Typical perFormance characTerisTics

Load Step Transient Response

(2-Phase with 50% Inductor

Mismatch)

Efficiency and Power Loss

vs Load Current

Short-Circuit Protection

Regulated VFB vs Supply Voltage

Oscillator Frequency vs RFREQ

Efficiency and Power Loss

vs Supply Voltage

LOAD CURRENT (A)

0.001

40

50

60

70

80

0.01

0.1

1

10

100

3860 G06

30

20

10

0

90

100

1

2

3

4

5

0

6

7

VIN = 6V

VOUT = 1.2V

SUPPLY VOLTAGE (V)

6

70

72

76

78

80

90

84

8

10

11

3860 G07

74

86

88

82

1.0

1.5

2.5

3.0

3.5

6.0

4.5

2.0

5.0

5.5

4.0

7

9

12

13

14

VOUT = 1.2V

IOUT = 15A

10ms/DIV

3860 G08

VIN = 12V

VOUT = 1.2V

ILOAD = SHORTED

SW NODE

5V/DIV

VOUT

1V/DIV

SUPPLY VOLTAGE (V)

3

0.596

0.598

0.600

0.602

0.604

4

5

3860 G10

6

RFREQ (k)

0

0.7

0.9

1.1

60

100

3860 G11

0.5

0.3

0.1

20

40

80

1.3

1.5

1.7

120

VOUT(AC)

100mV/DIV

50µs/DIV

3860 G05

VIN = 12V

VOUT = 1.2V

ILOAD = 0A TO 25A

IL1 = 320nH

10A/DIV

ILOAD

20A/DIV

IL2 = 220nH

10A/DIV

Oscillator Frequency

vs Temperature

TEMPERATURE (°C)

–50

595

600

605

25

50

75 100 125

3860 G12

590

585

–25

0

150

580

575

610

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LTC3860IUHPBF Datasheet(PDF) 5 Page - Linear Technology

LTC3860IUHPBF Datasheet(HTML) 5 Page - Linear Technology

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