Dual-Input Linear Charger, Smart Power Selector

with Advanced Battery Temperature Monitoring

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

indicates charging.)

SYS OUTPUT VOLTAGE

vs. SYS OUTPUT CURRENT (DC)

SYS CURRENT (A)

2.5

2.0

1.5

1.0

0.5

3.9

4.3

4.7

5.1

5.5

3.5

0.0

3.0

PEN1 = 1, PEN2 = X

CEN = 1

BATTERY REGULATION VOLTAGE

vs. TEMPERATURE

BATTERY VOLTAGE (V)

60

35

10

-15

4.175

4.180

4.185

4.190

4.195

4.200

4.205

4.210

4.215

4.220

4.170

-40

85

SYS OUTPUT VOLTAGE

vs. DC VOLTAGE

DC VOLTAGE (V)

12

10

8

6

4

2

0

14

4.2

4.4

4.6

4.8

4.0

NO SYS LOAD

NORMALIZED CHARGE CURRENT

vs. AMBIENT TEMPERATURE

(LOW IC POWER DISSIPATION)

AMBIENT TEMPERATURE (°C)

60

35

-15

10

0.9925

0.9950

0.9975

1.0000

1.0050

1.0025

1.0075

1.0100

0.9900

-40

85

SYS OUTPUT VOLTAGE

vs. USB VOLTAGE

USB VOLTAGE (V)

7

6

5

4

3

2

1

4.2

4.4

4.6

4.8

4.0

0

8

NO SYS LOAD

SYS OUTPUT VOLTAGE vs. SYS OUTPUT

CURRENT (USB AND DC DISCONNECTED)

SYS OUTPUT CURRENT (A)

1.5

1.0

0.5

3.7

3.8

3.9

4.0

4.1

4.2

4.3

4.4

4.5

3.6

0

2.0

THE SLOPE OF THIS LINE

SHOWS THAT THE BATT-TO-SYS

RESISTANCE IS 40mI.