SP6645EU datasheet(5/15 Pages) EXAR

Part #	SP6645EU

Description	Single/Dual Alkaline Cell, High Efficiency

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Manufacturer	EXAR [Exar Corporation]

Direct Link	http://www.exar.com

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5

Date: 11/30/04

SP6644/6645 High Efficiency Boost Regulator

Refer to the circuit in

Figure 28, T

AMB = +25

oC unless otherwise noted.

Figure 11. Maximum Load Current vs. Vbatt

(Vout=3.3V), Li=22uH Sumida CD43

Figure 13. No Load Battery Current vs. Vbatt

(Vout=3.3V), Li=22uH Sumida CD43

Figure 14. Output Voltage vs. Temperature,

Rlim=2.5k, Rload=3k, (Vout=3.3V),Li=22uH Sumida CD43

Figure 16. Ibatt Pin Quiescent Current vs. Temperature,

(Vout=3.3V), Vbatt=1.0V

Figure 15. Io Pin Quiescent Current vs. Temperature,

(Vout=3.3V)

Figure 9. Line/Load vs. Output Current (Vout=5V),

Rlim=2.5k, Li=22uH Sumida CD43, Refer to figure 29,

R1=499k, R2=169k

Figure 10. Line/Load vs. Output Current (Vout=5V),

Rlim=5k, Li=22uH Sumida CD43, Refer to figure 29,

R1=499k, R2=169k

Figure 12. Maximum Load Current vs. Vbatt (Vout=5V),

Li=22uH Sumida CD43, Refer to Figure 29,

R1=499k, R2=169k

5.00

5.01

5.02

5.03

5.04

5.05

5.06

5.07

5.08

010 20

304050607080 90 100

Iload (mA)

Vb=1.3V

Vb=2.6V

5.00

5.01

5.02

5.03

5.04

5.05

5.06

5.07

5.08

010

20

3040

50

Iload (mA)

Vb=1.3V

Vb=2.6V

0

20

40

60

80

100

120

140

160

180

200

220

240

0.0

1.0

2.0

3.0

4.0

Vbatt (V)

Rlim=2.5K

Rlim=5K

0

20

40

60

80

100

120

140

160

180

200

220

240

0.0

1.0

2.0

3.0

4.0

Vbatt (V)

Rlim=2.5K

Rlim=5K

10

100

1000

10000

0.0

1.0

2.0

3.0

4.0

Vbatt (V)

Rlim=2.5k

Rlim=5k

3.27

3.28

3.29

3.30

3.31

3.32

3.33

-40

-20

0

20

40

60

80

100

Temperature (degC)

30

35

40

45

50

55

60

-40

-20

0

20

40

60

80

100

Temperature (degC)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

-40

-20

0

20

40

60

80

100

Temperature (degC)

PERFORMANCE CHARACTERISTICS

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