LTC4098EUDC-TRPBF View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC4098EUDC-TRPBF

USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection

Linear Technology 

LTC4098/LTC4098-1

TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.

Battery Drain Current

vs Battery Voltage

30

IVOUT = 0μA

25

VBUS = 0V

20

15

10

VBUS = 5V

(SUSPEND MODE)

5

0

2.7

3.0

3.3

3.6

3.9

4.2

BATTERY VOLTAGE (V)

40981 G10

VBUS Current vs VBUS Voltage

(Suspend)

50 BAT = 3.8V

IVOUT = 0mA

40

30

PowerPath Switching Regulator

Efficiency vs Output Current

100 BAT = 3.8V

1x MODE

90

5x, 10x MODE

80

70

60

50

40

0.01

0.1

OUTPUT CURRENT (A)

1

40981 G11

VOUT Voltage vs VOUT Current

in Suspend

5.0

SUSPEND HIGH

4.5

4.0

Battery Charging Efficiency vs

Battery Voltage with No External

Load (PBAT/PVBUS)

100

RCLPROG = 3.01k

RPROG = 1k

IVOUT = 0mA

90 LTC4098

5x CHARGING

EFFICIENCY

1x CHARGING

80

EFFICIENCY

70

60

2.7

3.0

3.3

3.6

3.9

4.2

BATTERY VOLTAGE (V)

40981 G12

VBUS Current vs VOUT Current

in Suspend

2.5

VBUS = 5V

BAT = 3.3V

2.0 RCLPROG = 3.01k

SUSPEND HIGH

1.5

20

10

0

1

2

3

4

5

6

VBUS VOLTAGE (V)

40981 G13

Automatic Battery Charge

Current Reduction

120

100

80

60

40

20

0

3.2

3.3

3.4

3.5

3.6

VOUT (V)

40981 G16

6

3.5

SUSPEND LOW

3.0 VBUS = 5V

BAT = 3.3V

RCLPROG = 3.01k

2.5

0

0.5

1

1.5

2

2.5

OUTPUT CURRENT (mA)

40981 G14

Battery Charge Current

vs Temperature

600

RPROG = 2k

500

400

THERMAL REGULATION

300

200

100

0

–40 –20 0 20 40 60 80 100 120

TEMPERATURE (°C)

40981 G17

1.0

0.5

0

0

SUSPEND LOW

0.5

1

1.5

2

2.5

OUTPUT CURRENT (mA)

40981 G15

Normalized Battery Charger Float

Voltage vs Temperature

1.003

1.002

1.001

1.000

0.999

0.998

0.997

–40

–15 10

35

60

85

TEMPERATURE (°C)

40981 G18

40981fc

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