STBB2 Datasheet, PDF (12/25 Pages) STMicroelectronics – 800 mA 2.5 MHz, high efficiency dual mode buck-boost DC-DC converter

Typical performance characteristics
STBB2
Figure 10. Efficiency vs. output current (power save mode disabled V_OUT = 2.9 V)
100
AM10439v1
90
80
70
60
V_OUT = 2.9 V
50
40
30
20
10
0
1
Power save mode disabled
10
100
Vin=2.5V
Vin=3.6V
Vin=4.5V
1000
I_OUT [mA]
Figure 11. Efficiency vs. input voltage (power save enabled, V_OUT = 3.4 V)
100
AM10440v1
90
80
70
V_OUT = 3.4 V
60
50
40
Iout = 10 mA
30
Iout = 50 mA
20
10 Power save mode
Iout = 150 mA
Iout = 500 mA
Iout = 800 mA
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V_IN [V]
Figure 12. Efficiency vs. input voltage (power save disabled, V_OUT = 3.4 V)
100
AM10441v1
90
80
V_OUT = 3.4 V
70
60
50
40
Iout=10 mA
Iout=50 mA
30
Iout =150 mA
20
Iout=500 mA
10
Iout=800 mA
Power save mode
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V_IN [V]
12/25
DocID022745 Rev 9