www.ams.com/DC-DC_Step-Up/AS1341

Revision 1.09

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AS1341

Datasheet - A p p l i c a t i o n I n f o r m a t i o n

9 Application Information

9.1 Adjusting Output Voltage

The AS1341 feedback input features dual-mode operation. Connect FB to GND for the 5.0V preset output voltage (see Figure 21 on page 8).

Adjust the output voltage by connecting a voltage-divider from the output to GND (see Figure 22).

Figure 22. Adjustable Output Voltage Circuit

Ω.

(EQ 2)

Where:

9.2 Negative Output Voltage

Figure 23. Adjustable Negative Output Voltage Circuit

4.5V to 20V

5

IN

7

SHDNN

8

OUT

2

GND

6

ILIMIT

1

FB

D1

+

Indicates High-Power Trace

AS1341

3

POK

4

LX

L1

R

1

R

2

V

OUT

V

FB

-------------

1

–









⋅

=

5

IN

7

SHDNN

4

LX

8

OUT

2

GND

6

ILIMIT

1

FB

D1

L1

Indicates High-Power Trace

AS1341

3

POK

+