SP6650 Datasheet, PDF (9/17 Pages) Sipex Corporation – High Efficiency 600mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery

TYPICAL PERFORMANCE CHARACTERISTICS
100
95
90
85
80
75
70
65
60
55
50
1.0
V_IN = 3.0V
V_IN = 3.6V
V_IN = 4.2V
V_IN = 5.0V
V_IN = 6.5V
10.0
100.0
Iload (mA)
600.0
Figure 7. Efficiency vs. Output Current, V_OUT = 1.25V,
L1 = 22µH (Sumida CDRH6D28), I_LIM = V_IN
1.292
1.287
1.282
1.277
1.272
1.267
0
V_IN = 3.0V
V_IN = 3.6V
V_IN = 4.2V
V_IN = 5.0V
V_IN = 6.5V
100 200
300
400
Iload (mA)
500
600
Figure 8. Line/Load Rejection, V_OUT = 1.25V, L1 = 22µH
(Sumida CDRH6D28), I_LIM = V_IN
200
180
160
140
120
100
80
60
40
20
0
3.0
4.0
5.0
6.0
7.0
V_IN
Figure 9. No Load Battery Current, V_OUT = 1.25V,
L1 = 22µH (Sumida CDRH6D28), I_LIM = V_IN
100
90
80
70
60
50
I_IN
40
30
I_OUT
20
10
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (°C)
Figure 10. Quiescent Current vs. Temperature.
V_IN = 3.6V, SHDN = V_IN (Enabled)
50
40
I_IN
I_OUT
30
20
10
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (°C)
Figure 11. Quiescent Current vs. Temperature.
V_IN = 3.6V, SHDN = GND (Shutdown)
Figure 12. Load Step Transient Response, V_OUT = 2.5V,
10mA to 500mA. L1 = 22µH (Sumida CDRH6D28),
I =V
LIM
IN
Date: 5/25/04
SP6650 High Efficiency 600mA Synchronous Buck Regulator
9
© Copyright 2004 Sipex Corporation