STBB1XX STMicroelectronics, STBB1XX Datasheet - Page 6

• Manufacturer Part Number: STBB1XX
• Description: 1 A, high efficiency single inductor dual mode buck-boost DC-DC converter
• Manufacturer: STMicroelectronics

Specifications of STBB1XX

• Typical Efficiency: > 94 %

Typical application
4
Figure 3.
Figure 4.
Table 5.
1. Above listed components refer to typical application. Operation of the STBB1 is not limited to the choice of these external
2. R1 and R2 are calculated according to the following formula:
R1 = R2 x (VOUT/VFB - 1)
Suggested value for R2 is 100 kΩ. In order to reduce the quiescent current a maximum value of 500 kΩ is possible.
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components.
Component
COUT
CIN
R1
R2
L
Typical application
Application circuit - adjustable output version
Application circuit - fixed output version
List of external components
Manufacturer
VIN
VIN
VIN
VIN
CIN
CIN
CIN
CIN
Murata
Murata
TDK
VIN
VIN
VINA
VINA
EN
EN
MODE/SYN
MODE/SYN
VIN
VIN
VINA
VINA
EN
EN
MODE/SYN
MODE/SYN
SW1
SW1
SW1
SW1
STBB1PUR33
STBB1PUR33
Doc ID 15474 Rev 5
STBB1PUR
STBB1PUR
(1)
GRM188R60J106ME47D
GRM188R60J106ME47D
GND
GND
GND
GND
VLCF4020T-2R2N1R7
560 kΩ (V
L
L
L
L
Part number
PGND
PGND
PGND
PGND
100 kΩ
SW2
SW2
SW2
SW2
VOUT
VOUT
VOUT
VOUT
O
FB
FB
FB
FB
= 3.3 V)
R1
R1
R2
R2
VOUT
VOUT
VOUT
VOUT
COUT
COUT
COUT
COUT
2.2 µH
Value
10 µF
10 µF
(2)
4 x 4 x 2 mm
0603
0603
0402
0402
Size
STBB1XX