sp6641b Exar Corporation, sp6641b Datasheet - Page 5

• Manufacturer Part Number: sp6641b
• Description: Sp6641b -500ma Alkaline Dc/dc Boost Regulator
• Manufacturer: Exar Corporation

PERFORMANCE CHARACTERISTICS
Refer to the circuit in Figure 1, T
Figure 9. SP6641AEK-5.0 Line/Load Rejection Vs Load
Current
Figure 11. SP6641AEK-3.3 & SP6641AEK-5.0 No Load
Battery Current
Figure 13. SP6641AEK-3.3 & SP6641AEK-5.0
Maximum Resistive Load Current in Startup
Rev. 5/26/05, *Patent Pending
5.200
5.180
5.160
5.140
5.120
5.100
5.080
5.060
5.040
5.020
5.000
250
200
150
100
250
200
150
100
50
50
0
0
0.5
0.5
0
1.0
1.0
50
Vi=4.2V
Vi=3.6V
Vi=3.3V
Vi=2.0V
Vi=1.3V
1.5
1.5
2.0
2.0
100
Iload (mA)
Vin (V)
Vin (V)
SP6641A/6641B 500mA Alkaline DC/DC Boost Regulator in SOT-23
2.5
2.5
AMB
150
3.0
SP6641AEK-5.0
SP6641AEK-3.3
3.0
= +25°C
SP6641AEK-3.3, 22µH
SP6641AEK-3.3, 10µH
SP6641AEK-5.0, 22µH
SP6641AEK-5.0, 10µH
3.5
3.5
200
4.0
4.0
250
4.5
4.5
5
Figure 10. SP6641BEK-5.0 Line/Load Rejection Vs
Load Current
Figure 12. SP6641BEK-3.3 & SP6641AEK-5.0 No Load
Battery Current
Figure 14. SP6641BEK-3.3 & SP6641BEK-5.0
Maximum Resistive Load Current in Startup
5.100
5.080
5.060
5.040
5.020
5.000
4.980
4.960
4.940
4.920
4.900
700
600
500
400
300
200
100
500
450
400
350
300
250
200
150
100
50
0
0
0.5
0.5
0
1.0
1.0
1.5
200
1.5
2.0
2.0
© Copyright 2002 Sipex Corporation
Vin (V)
Iload (mA)
Vin (V)
400
2.5
2.5
Vi=4.2V
Vi=3.6V
Vi=3.3V
Vi=2.0V
Vi=1.3V
3.0
3.0
SP6641BEK-3.3, 22µH
SP6641BEK-3.3, 10µH
SP6641BEK-5.0, 22µH
SP6641BEK-5.0, 10µH
SP6641B-5.0
SP6641B-3.3
600
3.5
3.5
4.0
4.0
800
4.5
4.5