LTC3586 datasheet(9/36 Pages) LINER

Part #	LTC3586

Description	High Effi ciency USB Power Manager with Boost, Buck-Boost and Dual Bucks

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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9 / 36 page

LTC3586/LTC3586-1

9

3586fa

TYPICAL PERFORMANCE CHARACTERISTICS

Switching Regulators 1, 2 Pulse-

Skip Mode Quiescent Currents

TEMPERATURE (°C)

–40

275

300

325

60

3586 G22

250

225

200

1.85

1.90

1.95

1.80

1.75

1.70

–15

10

35

85

VOUT1,2 = 2.5V

(CONSTANT FREQUENCY)

VOUT1,2 = 1.25V

(PULSE SKIPPING)

VIN1,2 = 3.8V

Switching Regulators 1, 2

Pulse-Skip Mode Efﬁciency

Switching Regulators 1, 2

Burst Mode Efﬁciency

Switching Regulators 1, 2 Load

Regulation at VOUT1, 2 = 1.2V

Switching Regulators 1, 2 Load

Regulation at VOUT1, 2 = 1.8V

Switching Regulators 1, 2 Load

Regulation at VOUT1, 2 = 2.5V

OUTPUT CURRENT (mA)

1

40

50

60

70

80

10

100

1000

3586 G23

30

20

10

0

90

100

VOUT1,2 = 2.5V

VOUT1,2 = 1.2V

VOUT1,2 = 1.8V

VIN1,2 = 3.8V

OUTPUT CURRENT (mA)

30

90

100

20

10

80

50

70

60

40

0.1

10

100

1000

3586 G24

0

1

VOUT1,2 = 2.5V

VOUT1,2 = 1.2V

VOUT1,2 = 1.8V

VIN1,2 = 3.8V

OUTPUT CURRENT (mA)

1.185

1.200

1.215

1.230

0.1

10

100

1000

3586 G25

1.170

1

VBUS = 3.8V

Burst Mode

OPERATION

PULSE-SKIP

MODE

OUTPUT CURRENT (mA)

1.778

1.800

1.823

1.845

0.1

10

100

1000

3586 G26

1.755

1

VBUS = 3.8V

Burst Mode OPERATION

PULSE-SKIP MODE

OUTPUT CURRENT (mA)

2.47

2.50

2.53

2.56

0.1

10

100

1000

3586 G27

2.44

1

VBUS = 3.8V

Burst Mode OPERATION

PULSE-SKIP MODE

ILOAD (mA)

30

90

100

20

10

80

50

70

60

40

0.1

10

100

1000

3586 G28

0

1

VOUT3 = 3.3V

TYPE 3 COMPENSATION

Burst Mode

OPERATION

CURVES

PWM MODE

CURVES

VIN3 = 3V

VIN3 = 3.6V

VIN3 = 4.5V

VIN3 = 3V

VIN3 = 3.6V

VIN3 = 4.5V

TEMPERATURE (°C)

–55

0

0.05

0.15

0.20

0.25

–15

25

45

125

3586 G29

0.10

–35

5

65

85 105

0.30

0.10

0.15

0.25

0.30

0.35

0.20

0.40

PMOS VIN3 = 3V

PMOS VIN3 = 3.6V

PMOS VIN3 = 4.5V

NMOS VIN3 = 3V

NMOS VIN3 = 3.6V

NMOS VIN3 = 4.5V

TEMPERATURE (°C)

–55

2300

2350

2450

2500

2550

–15

25

45

125

3586 G30

2400

–35

5

65

85 105

2600

VIN3 = 3V

VIN3 = 3.6V

VIN3 = 4.5V

Buck-Boost Regulator Forward

Current Limit

Buck-Boost Regulator Efﬁciency

vs ILOAD

RDS(ON) For Buck-Boost Regulator

(TA = 25°C unless otherwise noted)

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