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AS1333

Data Sheet - P i n A s s i g n m e n t s

4 Pin Assignments

Figure 2. Pin Configuration

Pin Descriptions

Table 1. Pin Descriptions

Pin Name

Pin Number

Description

PVIN

A1

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

VDD

B1

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

EN

C1

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

set low.

NC

C2

May be connected to VDD, SGND or floating.

FB

C3

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

AGND

B3

Analog and Control Ground.

PGND

A3

Power Ground.

SW

A2

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

AS1333.

A3

B3

C3

A1

B1

C1

PGND

AGND

FB

PVIN

VDD

EN

C2

NC

A2

SW

A1

B1

C1

A3

B3

C3

PVIN

VDD

EN

PGND

AGND

FB

C2

NC

A2

SW

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