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Revision 1.09

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AS1341

Datasheet - P i n A s s i g n m e n t s

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

1

FB

Feedback Input. For the fixed 5V output connect this pin to GND. For adjustable output, connect to a

2

GND

Ground

3

POK

Power OK. Active-low open-drain reset output.

Note:

Connect pin POK to GND when the Power-Ok feature is not used.

4

LX

Inductor Connection. Connect this pin to an external inductor.

5

IN

4.5V to 20V Input Supply Voltage

6

ILIMIT

Peak Current Control Input. Connect this pin to IN or GND to set peak current limit

(see Setting

Current Limit on page 11).

7

SHDNN

Shutdown Input. A low on this pin puts the AS1341 into shutdown mode. Supply current is reduced to

0.8µA and LX goes high-impedance.

8

OUT

Regulated Output Voltage High-Impedance Sense Input. For the fixed 5V output connect this pin to

9

NC

Exposed Pad. This pad is not connected internally. Connect to GND or do not connect.

5 IN

3

POK

2

GND

1

FB

8 OUT

AS1341

4

LX

7 SHDNN

6 ILIMIT

9