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STBB1-APUR18

STMicroelectronics
Part Number STBB1-APUR18
Manufacturer STMicroelectronics
Description 1A high efficiency single inductor dual mode buck-boost DC-DC converter
Published May 30, 2014
Detailed Description STBB1-AXX 1 A, high efficiency single inductor dual mode buck-boost DC-DC converter Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Buck...
Datasheet PDF File STBB1-APUR18 PDF File

STBB1-APUR18
STBB1-APUR18

Overview
STBB1-AXX 1 A, high efficiency single inductor dual mode buck-boost DC-DC converter Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Buck-boost DC-DC converter Operating input voltage range from 2.
0 V to 5.
5 V 2% DC feedback voltage tolerance Synchronous rectification Shutdown function 1.
5 MHz switching frequency Power save mode at light load Typical efficiency: > 94% 1 A output current capability Shutdown current < 1 µA Available in DFN10 (3 x 3 mm) integrated low-RDSon N-channel and P-channel MOSFET switches contribute to its high efficiency.
The MODE pin allows selecting between auto mode and forced PWM mode thus taking benefit either of lower power consumption or best dynamic performance.
The device includes also soft-start control, thermal shutdown and current limit.
The STBB1-A is packaged in DFN10 (3 x 3 mm).
DFN10 (3 x 3 mm) Applications ■ ■ ■ ■ ■ Single cell Li-Ion and 3 cells alkaline, Ni-MH powered devices SD/MMC memory card supply Palmtop computers Cell phones Digital cameras Description The STBB1-A is a fixed frequency, high efficiency, buck-boost DC-DC converter able to provide output voltages ranging from 1.
2 V to 5.
5 V and input voltages from 2.
0 V to 5.
5 V.
The device can operate with input voltages higher than, equal to, or lower than the output voltage making the product suitable for single lithium-Ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range.
The Table 1.
Device summary Order code STBB1-APUR Marking BB1-A Output voltage ADJ October 2011 Doc ID 022197 Rev 2 1/22 www.
st.
com 22 http://www.
Datasheet4U.
com Contents STBB1-AXX Contents 1 2 3 4 5 6 Block diagram .
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3 Absolute maximum ratings .
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4 Pin configuration .
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5 Typical application .
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