ADM9264

–4–

REV. 0

PIN FUNCTION DESCRIPTIONS

Pin No.

Mnemonic

Function

1

GND

Ground.

2

SU1

Supply to Be Monitored. 12 V

± 6%.

3

SU2

Supply to Be Monitored. 5 V

± 7%.

4

SU3

Supply to Be Monitored. 3.3 V

± 7%.

5

SU4

Supply to Be Monitored. 2.8 V

± 5%.

6

NC

No Connect.

7

ERRX

Digital Input. Auxiliary error input (active high). When High it forces PWROK to be Low.

Supply Monitor IC Power Supply. Can be powered off any power supply between 2.5 V and 6 V

including one of the supplies being monitored (except for SU1).

9

SU4DET

Digital Input. Disable SU4. When High it causes

ERR4 to pull high through 10 k

Ω external resistor to

a positive power supply.

10

ERRY

Digital Input. Auxiliary error input (active low). When Low it forces PWROK to be Low.

11

DIS

Digital Input. When High it forces PWROK to be High.

12

ERR4

Open Drain Output. Pulls high through 10 k

Ω external resistor to a positive power supply when

SU4DET is high or SU4 is within its required tolerance of 2.8 V

± 5%. Pulls Low otherwise.

13

ERR3

Open Drain Output. Low when SU3 is outside its required tolerance of 3.3 V

± 7%. Pulls High other-

wise through 10 k

Ω external resistor to a positive power supply.

14

PWROK

Open Drain Output. Pulls High through external 10 k

Ω resistor to a positive power supply when SU1,

SU2, SU3 and SU4 are all within their required tolerances and when

ERRY is High and when ERRX

is Low. Pulls Low otherwise.

15

ERR2

Open Drain Output. Low when SU2 is outside its required tolerance of 5 V

± 7%. Pulls High other-

wise through 10 k

Ω external resistor to a positive power supply.

16

ERR1

Open Drain Output. Low when SU1 is outside its required tolerance of 12 V

± 6%. Pulls High other-

wise through 10 k

Ω external resistor to a positive power supply.

PIN CONFIGURATION

14

13

12

11

16

15

10

9

8

1

2

3

4

7

6

5

TOP VIEW

(Not to Scale)

ADM9264

NC = NO CONNECT

GND

ERR3

PWROK

ERR2

ERR1

SU1

SU2

SU3

ERRY

DIS

ERR4

SU4

NC

ERRX

SU4DET