PSB2120 データシートの表示（PDF） - Infineon Technologies

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PSB2120

ISDN Remote Power Controller (IRPC)

Infineon Technologies 

PSB 2120

Pin Definitions and Functions (cont’d)

Pin Pin Symbol Input (I) Definition

No. No.

Output (O)

P-DSO P-DIP

Function

15

13

ENA

I

Enable

A high input voltage at this pin will

stop the IRPC-function.

16

14

CO

O

Comparator

output

17

15

CN

I

Comparator

neg. input

Connections of the universal usable

comparator.

18

16

CP

I

Comparator

pos. input

19

17

GND I

Ground

All analog and digital signals are

referred to this pin.

20

18

VEXT

I/O

External supply

Output of the internal CMOS-supply.

Via VEXT the internal CMOS-circuits

can be supplied from an external

DC-supply in order to reduce chip

power dissipation.

21

19

IN

I

22

20

IP

I

Negative current

sense

Positive current

sense

When the voltage difference

between these two pins exceeds

100 mV, the digital current limiting

becomes active.

23

21

VREF

O

Reference

voltage

Output of the 4.0 V reference

voltage.

24

22

VS

I

Supply voltage VBAT is the positive input voltage.

Semiconductor Group

4

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