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Revision 1.10

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AS1346-49

Datasheet - Pin Assignments

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 2. Pin Descriptions

Pin Number

Pin Name

Description

1

SW1

Switch Node1 Connection to Inductor. This pin connects to the drains of the internal main and

synchronous power MOSFET switches.

2, 11

PVIN

Power Supply Connector. This pin must be closely decoupled to PGND with a

 4.7μF ceramic

capacitor.

3

EN1

shutdown mode. In shutdown mode all functions are disabled, drawing

1μA supply current.

This pin should not be left floating.

4

FB1

factory set from 1.2V to 3.6V. For further information see Ordering Information on page 15.

5

EN2

shutdown mode. In shutdown mode all functions are disabled, drawing

1μA supply current.

This pin should not be left floating.

6

LBO

Low Battery Comperator Output. This open-drain output is low when:

- the voltage on LBI is higher than 1.2V or

7

LBI

Low Battery Comperator Input. 1.2V Threshold. May not be left floating. If connected to GND, LBO is

8

AGND

Analog Ground.

9

FB2

factory set from 1.2V to 3.6V. For further information see Ordering Information on page 15.

10

VDD

Supply Connector. Connect this pin to PVIN

12

SW2

Switch Node2 Connection to Inductor. This pin connects to the drains of the internal main and

synchronous power MOSFET switches.

13

PGND

Exposed Pad. The exposed pad must be connected to AGND. Ensure a good electrical connection to the

PCB to achieve optimal thermal performance.

AS1346

PVIN 2

FB1 4

SW1 1

EN1 3

FB2

9

VDD

10

PVIN

11

SW2

12

13

EN2 5

AGND

8

LBO 6

LBI

7