NCS37005

http://onsemi.com

3

Table 1. PIN FUNCTION DESCRIPTION − QFN

Pin #

Name

Pad Description

0

Ground

QFN center slug

1

MLD

Mains Level Detect (Zero Cross)

2

CTtest

Test port (Must be tied to CTbias in functional mode).

3

CTbias

2 V reference that is connected to the external CT sensor

4

CTstim

Differential current measurement port for external CT

5

CTresD

Determines IV converter gain for detection threshold / matched to CT turns ratio (Differential Current)

6

IDF

Front end noise filter capacitor

7

NC

Tie to Ground or leave floating

8

NC

Tie to Ground or leave floating

9

NC

Tie to Ground or leave floating

10

NC

Tie to Ground or leave floating

11

NC

Tie to Ground or leave floating

12

NC

Tie to Ground or leave floating

13

NC

Float

14

NC

Float

15

SCRdrv

Used to trigger the solenoid at a fault detection

16

Supply

Power supply

Table 2. PIN FUNCTION DESCRIPTION − TSSOP

Pin #

Name

Pad Description

1

CTstim

Differential current measurement port for external CT

2

Ground

Main ground connection for IC.

3

CTresD

Determines IV converter gain for detection threshold / matched to CT turns ratio (Differential Current)

4

IDF

Front end noise filter capacitor

5

TE

Test enable

6

NC

Tie to Ground or leave floating

7

NC

Tie to Ground or leave floating

8

NC

Tie to Ground or leave floating

9

NC

Tie to Ground or leave floating

10

NC

Tie to Ground or leave floating

11

NC

Float

12

NC

Float

13

SCRdrv

Used to trigger the solenoid at a fault detection

14

Supply

Power supply

15

MLD

Mains Level Detect (Zero Cross)

16

CTbias

2 V reference that is connected to the external CT sensor