AS1355 datasheet(2/12 Pages) AMSCO

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AS1355

Datasheet - Pin Assignm ents

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

1EN1

Active-High Enable Input 1. Pull this pin to GND to disable the regulated output voltage VOUT1.

2VDDA

Analog Power Supply Voltage

3VDD1

Unregulated Input Voltage 1

4VDD2

Unregulated Input Voltage 2

5VOUT1

Regulated Output Voltage 1

6VOUT2

Regulated Output Voltage 2

7VOUT3

Regulated Output Voltage 3

8NC

Not Connected

9VDD3

Unregulated Input Voltage 3

Not Connected

11, 12

GND

Ground.

Note:

All GND pins must be connected together externally.

REF

Reference Voltage.

Note:

Connect to a 100nF capacitor during normal operation.

Not Connected

EN3

Active-High Enable Input 3. Pull this pin to GND to disable the regulated output voltage VOUT3.

EN2

Active-High Enable Input 2. Pull this pin to GND to disable the regulated output voltage VOUT2.

Exposed Pad. This pad is not connected internally, it can be connected to GND.

GND

VOUT2

VOUT1

EN3

REF

EN1 1

VDDA

VDD2

AS1355

VDD1

VOUT3

VDD3

GND

EN2

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