MC34675 datasheet(8/24 Pages) FREESCALE

No de pièce	MC34675

Description	28V-Input-Voltage Single-Cell Li-Ion Battery Charger with 10mA Regulator

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Fabricant	FREESCALE [Freescale Semiconductor, Inc]

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Analog Integrated Circuit Device Data

8

Freescale Semiconductor

34675

ELECTRICAL CHARACTERISTICS

ELECTRICAL PERFORMANCE CURVES

Figure 4. Complete Charge Cycle

VIN = 5.0V, ICHG=400mA, 740mAh Li-Ion Battery, TA=25°C

Figure 5. Charger Output Voltage vs VIN

IBAT = 0mA, TA = 25°C

Figure 6. VIN Pin Supply Current vs VIN

IBAT = 0mA, TA = 25°C

Figure 7. BAT Pin Current vs Battery Voltage in OVP

VIN = 7.0V, TA = 25°C

Figure 8. Constant Charge Current vs VIN

VBAT = 3.7V, TA = 25°C

Figure 9. Trickle Charge Current vs VIN

VBAT = 2.0V, TA = 25°C

0

30

60

90 120 150 180 210 240

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

0

50

100

150

200

250

300

350

400

450

Charge Current

Battery Voltage

Time (min)

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

3.6

3.7

3.8

3.9

4.0

4.1

4.2

4.3

Input Voltage (V)

3

4

567

0

300

600

900

1200

1500

1800

2100

Charger Disabled

Charger Enabled

Input Voltage (V)

01

23

45

-4

0

4

8

12

16

V

BAT

(V)

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

0

200

400

600

800

1000

1200

R

ISET

=3.95 kΩ

R

ISET

=15.8 kΩ

R

ISET

=7.9 kΩ

Input Voltage (V)

3456

7

0

50

100

150

200

250

R

ISET

=15.8 kΩ

R

ISET

=7.9 kΩ

R

ISET

=3.95 kΩ

Input Voltage (V)

Numéro de pièce similaire - MC34675

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