Datasheet
Table Of Contents
- Table 1. Device summary
- 1 Application circuit
- 2 Pin configuration
- 3 Maximum ratings
- 4 Electrical characteristics
- 5 Application information
- 5.1 Description
- 5.2 External components selection
- 5.3 Output capacitor (VOUT > 2.5 V)
- 5.4 Output capacitor (0.8 V < VOUT < 2.5 V)
- 5.5 Output voltage selection
- 5.6 Inductor (VOUT > 2.5 V)
- 5.7 Inductor (0.8 V < VOUT < 2.5 V)
- 5.8 Function operation
- 6 Layout considerations
- 7 Diagram
- 8 Typical performance characteristics
- Figure 9. Voltage feedback vs. temperature
- Figure 10. Oscillator frequency vs. temperature
- Figure 11. Max duty cycle vs. temperature
- Figure 12. Inhibit threshold vs. temperature
- Figure 13. Reference line regulation vs. temperature
- Figure 14. Reference load regulation vs. temperature
- Figure 15. ON mode quiescent current vs. temperature
- Figure 16. Shutdown mode quiescent current vs. temperature
- Figure 17. PMOS ON resistance vs. temperature
- Figure 18. NMOS ON resistance vs. temperature
- Figure 19. Efficiency vs. temperature
- Figure 20. Efficiency vs. output current@Vout = 5 V
- Figure 21. Efficiency vs. output current@Vout = 3.3 V
- Figure 22. Efficiency vs. output current@Vout = 12 V
- 9 Package mechanical data
- Table 6. Power SO-8 (exposed pad) mechanical data
- Figure 23. Power SO-8 (exposed pad) dimensions
- Figure 24. Power SO-8 (exposed pad) recommended footprint
- Table 7. Power SO-8 (exposed pad) tape and reel mechanical data
- Figure 25. Power SO-8 (exposed pad) tape and reel dimensions
- Table 8. DFN8 (4X4) mechanical data
- Figure 26. DFN8 (4x4) dimensions
- Table 9. DFN8 (4x4)tape and reel mechanical data
- Figure 27. DFN8 (4x4)tape and reel dimensions
- 10 Revision history

ST1S10 Typical performance characteristics
Doc ID 13844 Rev 5 21/29
Figure 19. Efficiency vs. temperature Figure 20. Efficiency vs. output
current@V
out
= 5 V
50
60
70
80
90
100
-50 -25 0 25 50 75 100 125
TEMPERATURE [°C]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=12V, V
OUT
=5V, I
OUT
=3A
50
60
70
80
90
100
-50 -25 0 25 50 75 100 125
TEMPERATURE [°C]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=12V, V
OUT
=5V, I
OUT
=3A
50
60
70
80
90
100
00.511.522.53
OUTPUT CURRENT [A]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=12V, V
OUT
=5V, T
J
=25°C
50
60
70
80
90
100
00.511.522.53
OUTPUT CURRENT [A]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=12V, V
OUT
=5V, T
J
=25°C
Figure 21. Efficiency vs. output
current@V
out
= 3.3 V
Figure 22. Efficiency vs. output
current@V
out
= 12 V
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3
OUTPUT CURRENT [A]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=5V, V
OUT
=3.3V, T
J
=25°C
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3
OUTPUT CURRENT [A]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=5V, V
OUT
=3.3V, T
J
=25°C
50
60
70
80
90
100
00.511.522.53
OUTPUT CURRENT [A]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=16V, V
OUT
=12V, T
J
=25°C
50
60
70
80
90
100
00.511.522.53
OUTPUT CURRENT [A]
EFFICIENCY [%]
V
IN-A
=V
IN-SW
=V
INH
=16V, V
OUT
=12V, T
J
=25°C