STBB1-APUR Datasheet, PDF (7/22 Pages) STMicroelectronics – 1 A, high efficiency single inductor dual mode buck-boost DC-DC converter

STBB1-AXX
Typical application
Table 5. List of external components ⁽¹⁾
Component
Manufacturer
Part number
Value
Size
CIN
COUT
L
R1
R2
Murata
Murata
TDK
Coilcraft
GRM21BR71A106KE51L
GRM21BR60J226ME39L
VLCF4020T-2R2N1R7
XFL4020-222ME
560 kΩ (V_O = 3.3 V)
100 kΩ
10 µF
22 µF
2.2 µH
(2)
0805
0805
4 x 4 x 2 mm
4 x 4 x 2 mm
0402
0402
1. Above listed components refer to typical application. Operation of the STBB1-A is not limited to the choice of these external
components.
2. R1 and R2 are calculated according to the following formula:
R1 = R2 x (V_OUT/V_FB - 1)
Suggested value for R2 is 100 kΩ. In order to reduce the quiescent current a maximum value of 500 kΩ is possible.
Doc ID 022197 Rev 2
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