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Revision 1.12

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AS1312

Datasheet - P i n A s s i g n m e n t s

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

WL-CSP

TDFN

A1

1

LBI

Low Battery Comparator Input. 0.6V Threshold. May not be left floating. If connected to

GND, LBO is working as Power Output OK.

A2

2

GND

Ground

A3

3

LX

External Inductor Connector.

A4

4

VOUT

Output Voltage. Decouple VOUT with a ceramic capacitor as close as possible to VOUT

and GND.

B4

5

REF

Reference Pin. Connect a 100nF ceramic capacitor to this pin.

B3

6

LBO

Low Battery Comparator Output. Open-drain output.

B2

7

EN

Enable Pin. Logic controlled shutdown input.

1 = Normal operation;

0 = Shutdown; shutdown current <100nA.

B1

8

VIN

Battery Voltage Input. Decouple VIN with a ceramic capacitor as close as possible to VIN

and GND.

-

9

NC

Exposed Pad. This pad is not connected internally. Can be left floating or connect to GND

to achieve an optimal thermal performance.

AS1312

GND 2

VOUT 4

LBI 1

LX 3

REF

5

LBO

6

EN

7

VIN

8

9

8-pin (2x2) TDFN

8-pin WL-CSP