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Revision 1.09

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AS1334

Datasheet - Pin Assignm ents

4 Pin Assignments

Figure 2. Pin Configuration

4.1 Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

1

FB

Feedback Pin. Connect to the output at the output filter capacitor.

2

POK

Power-OK.

3

EN

Enable Input. Set this digital input high for normal operation. For shutdown, set low.

4

VDD

+2.7V to +5.5V Power Supply Voltage. Analog Supply Input.

5, 9

SGND

Analog and Control Ground. Connect these pins with low resistance to PGND.

6

PVIN

+2.7V to +5.5V Power Supply Voltage. Input to the internal PFET switch.

7SW

Switch Pin. Switch node connection to the internal PFET switch and NFET synchronous rectifier.

Connect to an inductor with a saturation current rating that exceeds the maximum switch peak

current limit specification of the AS1334.

8PGND

Power Ground. Connect this pin with low resistance to SGND.

5SGND

3

EN

2

POK

1

FB

8PGND

AS1334

4

VDD

7 SW

6PVIN

9

SGND