AS1333 datasheet(2/16 Pages) AMSCO

tên linh kiện	AS1333

Giải thích chi tiết về linh kiện	650mA, Step Down DC/DC Converter for Portable Applications

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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

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

Note: for guaranteed VOUT = 3.09V set VIN = 3.25V to 5.5V;

VDD

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

Note: for guaranteed VOUT = 3.09V set VIN = 3.25V to 5.5V;

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

set low.

May be connected to VDD, SGND or floating.

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

AGND

Analog and Control Ground.

PGND

Power Ground.

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.

PGND

AGND

PVIN

VDD

PVIN

VDD

PGND

AGND

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