LT3652EMSETRPBF datasheet(6/26 Pages) LINER

Part #	LT3652EMSETRPBF

Description	Power Tracking 2A Battery Charger for Solar Power

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3652

6

3652fb

TYPICAL PERFORMANCE CHARACTERISTICS

Maximum Charge Current

(VSENSE–VBAT) vs Temperature

Thermal Foldback – Maximum

Charge Current (VSENSE–VBAT)

vs Temperature

CC/CV Charging; BAT Pin Bias

Current vs VBAT

TA = 25°C, unless otherwise noted.

TEMPERATURE (°C)

–50

99.0

99.2

99.6

99.8

100.0

101.0

100.4

0

50

75

3652 G07

99.4

100.6

100.8

100.2

–25

25

100

125

VFB = 3V

TEMPERATURE (°C)

0

40

80

20

60

100

120

45

65

85

105

125

35

135

25

55

75

95

115

3652 G08

VBAT (V)

0

–0.4

0.0

0.4

0.8

2.2

1.6

1

2

2.5

2.0

1.2

–0.2

0.2

0.6

1.0

1.8

1.4

0.5

1.5

3

3652 G09

VBAT(FLT)

VIN_REG (V)

2.65

0

20

80

60

40

2.67

2.69 2.7

3652 G10

100

2.66

2.68

2.72

2.71

2.73 2.74 2.75

VBAT(FLT) (V)

02

0

8

6

10

12

16

3652 G11

4

2

6

4

8

10

12

14

TIME (MINUTES)

0

0.5

2.0

2.5

1.5

1.0

40

80 100

3652 G12

3.0

35

45

75

65

55

95

85

20

60

140

120

160 180 200

CHARGE

CURRENT

EFFICIENCY

POWER

LOSS

VIN = 20V

Maximum Charge Current

(VSENSE–VBAT) vs VIN_REG Voltage

VFLOAT Programming Resistor

Current vs VFLOAT for 2-Resistor

Network

Charge Current, Efﬁciency, and

Power Loss vs Time

(ICHG(MAX) = 2A; VFLOAT = 8.2V)

Charger Efﬁciency vs Battery

Voltage (ICHG = 2A)

VBAT (V)

70

76

80

82

84

86

88

74

72

78

90

57

9

11

13

414 15

36

8

10

12

3652 G13

VIN = 20V WITH INPUT BLOCKING DIODE

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LT3652EMSETRPBF Datasheet(PDF) 6 Page - Linear Technology

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