www.austriamicrosystems.com/Power-Management/AS1390

Revision 1.04

3 - 20

AS1390A, AS1390B

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

4 Pin Assignments

Figure 3. Pin Assignments (Top View)

4.1 Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Pin Typ

Description

AS1390A

AS1390B

13

5

VDDH

P

Supply Voltage

3

10

UVLO

A I/O

Undervoltage Lockout

6

12

COMP_2D

A I/O

Compensation Network 2D. default

8

COMP_3D

A I/O

Compensation Network 3D

19

6

VBIAS

A I/O

High Side Regulator Output. Connect this pin to the Supply rail via a capacitor.

14

1, 16

VDDL

A I/O

Internal Regulator Output

17

4

VDDM

A I/O

Drive Voltage Regulator Output

5

11

FB_2D

A I/O

FB Input 2D. default

4

FB_3D

A I/O

FB Input 3D

15

2

GATE

A I/O

Gate Driver Output

7

13

SENSE_2D

A I/O

Current Sense Input 2D. default

9

SENSE_3D

A I/O

Current Sense Input 3D

10

-

SENSE_GND

A I/O

Current Sense Input GND. (only for AS1390A)

1

8

LX

A I/O

Inductor Connector. Connect an inductor from LX to the output of the buck

converter

2

9

FB_BUCK

A I/O

Feedback Buck Pin. Connect this pin to the output of the buck converter

20

7

VDDHP

P

Supply for DCDC Buck-Converter

16

3

PGND

P

Power Ground

11

14

AGND

P

Analog Ground

12

15

EN_BOOST

D IN

Enable. Enables the Boost-Controller.

1 = Normal operation;

0 = Shutdown;

13

-

MODE_3D

D IN

Selection for 3D Mode. (only for AS1390A)

1 = 3D;

0 = 2D;

-

Exposed Pad

n.c.

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

GND to achieve an optimal thermal performance.