Datasheet

Typical performance characteristics STBB1-AXX
12/22 Doc ID 022197 Rev 2
7 Typical performance characteristics
L = 2.2 µH, V
O
= 3.3 V, all measurements done with circuit shown in Figure 3 and external
components listed in Tabl e 5.
Figure 5. Efficiency vs. I
OUT
in auto mode Figure 6. Efficiency vs. I
OUT
in PWM mode
Figure 7. Efficiency vs. V
IN
, I
OUT
= 500 mA Figure 8. PS to PWM transition
Figure 9. Max I
OUT
vs. V
IN
Figure 10. Boost region operation
V
IN
= 2.5 V V
O
= 3.3 V I
O
= 50 mA, pulse skipping
50
60
70
80
90
100
1 10 100 1000
Output Current [mA]
Efficiency [%]
V
IN
= 3.6 V
V
IN
= 2.2 V
V
IN
= 5.0 V
50
60
70
80
90
100
1 10 100 1000
Output Current [mA]
Efficiency [%]
V
IN
= 3.6 V
V
IN
= 2.2 V
V
IN
= 5.0 V
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Output Current [mA]
Efficiency [%]
V
IN
= 3.6 V
V
IN
= 5.0 V
V
IN
= 2.2 V
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Output Current [mA]
Efficiency [%]
V
IN
= 3.6 V
V
IN
= 5.0 V
V
IN
= 2.2 V
50
60
70
80
90
100
2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50
Input Voltage [V]
Efficiency [%]
V
O
= 2.5 V
V
O
= 5.0 V
V
O
= 3.3 V
50
60
70
80
90
100
2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50
Input Voltage [V]
Efficiency [%]
V
O
= 2.5 V
V
O
= 5.0 V
V
O
= 3.3 V
100
200
300
400
500
600
700
800
2.1 2.4 2.7 3 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
VIN [V]
I
OUT
[mA]
200
300
400
500
600
700
800
900
1000
1100
1200
2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage
Output Current [mA]
V
O
= 2.5 V
V
O
= 3.3 V
V
O
= 5.0 V
200
300
400
500
600
700
800
900
1000
1100
1200
2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage
Output Current [mA]
V
O
= 2.5 V
V
O
= 3.3 V
V
O
= 5.0 V
SW1
3 V/div
SW2
3 V/div
I
L
0.2 A/div
V
O
70 mV/div
AC Coupled
TIMEBASE: 2 µs/div