AS1322 データシートの表示（PDF） - austriamicrosystems AG
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AS1322 Datasheet PDF : 17 Pages
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AS1322
Data Sheet
austriamicrosystems
Powersave Operation (AS1322A)
9 Application Information
The AS1322 is perfectly suited for LED matrix displays, bar-graph displays, instrument-panel meters, dot matrix dis-
plays, set-top boxes, white goods, professional audio equipment, medical equipment, industrial controllers to name a
few applications.
Along with Figure 1 on page 1, Figures 16-19 depict a few of the many applications for which the AS1322 converters
are perfectly suited.
Figure 16. Single AA Cell to 3.3V Synchronous Boost Converter with Load Disconnect in Shutdown
L1
4.7µH
D1
AA
Battery
On
Off
C1
4.7µF
1 SW
6
5
VIN
VOUT
C2
AS1322 4.7µF
4
SHDNN
3
FB
2 GND
R3
510kΩ
R3
510kΩ
Q1
VOUT
3.3V, 150mA
R1
1.02MΩ
1%
R2
604kΩ
1%
Figure 17. Single Lithium Cell to 5V, 250mA
L1
4.7µH
2Ω
100nF
Optional
Snubber
D1
Lithium
Battery
C1
4.7µF
1 SW
6
5
VIN
VOUT
C2
AS1322 4.7µF
On
4
3
Off
SHDNN
FB
2 GND
R1
1.02MΩ 1%
C3
100pF
R2
332kΩ 1%
www.austriamicrosystems.com
Revision 1.03
9 - 17
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