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STBB1PUR Datasheet(PDF) 11 Page - STMicroelectronics

Part # STBB1PUR
Description  1 A, high efficiency single inductor
PDF  21 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STBB1PUR Datasheet(HTML) 11 Page - STMicroelectronics

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STBB1XX
Typical performance characteristics
Doc ID 15474 Rev 5
11/21
7
Typical performance characteristics
L = 2.2 µH, VO = 3.3 V, all measurements done with circuit shown in Figure 3 and external
components listed in Table 5.
Figure 5.
Efficiency vs. IOUT in auto mode
Figure 6.
Efficiency vs. IOUT in PWM mode
Figure 7.
Efficiency vs. VIN, IOUT = 500 mA
Figure 8.
PS to PWM transition
Figure 9.
Max IOUT vs. VIN
Figure 10.
Boost region operation
VIN = 2.5 V VO = 3.3 V IO = 50 mA, pulse skipping
50
60
70
80
90
100
1
10
100
1000
Output Current [mA]
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]
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]
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]
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]
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]
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]
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]
200
300
400
500
600
700
800
900
1000
1100
1200
22.5
33.5
44.5
5
5.5
Input Voltage
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
22.5
33.5
44.5
5
5.5
Input Voltage
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
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



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