www.austriamicrosystems.com

Revision 1.03

9 - 17

AS1322

Data Sheet

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

Figure 17. Single Lithium Cell to 5V, 250mA

AS1322

4.7µF

604k

Ω

1%

On

Off

Q1

L1

4.7µH

AA

Battery

4.7µF

510k

Ω

510k

Ω

3.3V, 150mA

D1

1.02M

Ω

1%

GND

2

SW

1

4

SHDNN

3

FB

6

5

AS1322

4.7µF

332k

Ω 1%

1.02M

Ω 1%

On

Off

L1

4.7µH

Lithium

Battery

4.7µF

D1

100pF

100nF

2

Ω

Optional

Snubber

GND

2

SW

1

4

SHDNN

3

FB

6

5