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STBB1PUR Datasheet, PDF (12/21 Pages) STMicroelectronics – 1 A, high efficiency single inductor
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Typical performance characteristics
STBB1XX
Figure 11. Boost region operation
SW1
3 V/div
SW2
3 V/div
IL
0.2 A/div
VO
20 mV/div
AC Coupled
TIMEBASE: 0.5µs/div
VIN = 2.5 V VO = 3.3 V IO = 200 mA, PWM mode
Figure 13. Buck-boost region operation
Figure 12. Buck-boost region operation
SW1
3 V/div
SW2
3 V/div
IL
0.2 A/div
VO
100 mV/div
AC Coupled
TIMEBASE: 1µs/div
VIN = 3.6 V VO = 3.3 V IO = 100 mA, pulse skipping mode
Figure 14. Buck-boost region operation
SW1
3 V/div
SW2
3 V/div
IL
0.3 A/div
VO
30 mV/div
AC Coupled
TIMEBASE: 0.5 µs/div
VIN = 3.6 V VO = 3.3 V IO = 500 mA, PWM mode
Figure 15. Buck region operation
SW1
3 V/div
SW2
3 V/div
IL
0.1 A/div
VO
20 mV/div
AC Coupled
TIMEBASE: 1 µs/div
VIN = 3.6 V VO = 3.3 V IO = 50 mA, PWM mode
Figure 16. Buck region operation
SW1
3 V/div
SW2
3 V/div
IL
0.4 A/div
VO
300 mV/div
AC Coupled
TIMEBASE: 2 µs/div
VIN = 4.2 V VO = 3.3 V IO = 100 mA, pulse skipping mode
SW1
3 V/div
SW2
3 V/div
IL
0.4 A/div
VO
20 mV/div
AC Coupled
TIMEBASE: 0.2 µs/div
VIN = 4.2 V VO = 3.3 V IO = 500 mA, PWM mode
12/21
Doc ID 15474 Rev 5
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