UCD9080RHBR datasheet(7/38 Pages) TI1

Part #	UCD9080RHBR

Description	8-CHANNEL POWER-SUPPLY SEQUENCER AND MONITOR

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Manufacturer	TI1 [Texas Instruments]

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UCD9080

www.ti.com................................................................................................................................................... SLVS692E – SEPTEMBER 2006 – REVISED MAY 2008

Table 1. TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

ADDR2/GPO2

26

I/O

I2C address select 2, general-purpose digital output 2

ADDR3/GPO3

27

I/O

I2C address select 3, general-purpose digital output 3

ADDR4/GPO4

28

I/O

I2C address select 4, general-purpose digital output 4

EN1

23

I/O

Voltage rail 1 enable (digital output)

EN2

24

I/O

Voltage rail 2 enable (digital output)

EN3

11

I/O

Voltage rail 3 enable (digital output)

EN4

10

I/O

Voltage rail 4 enable (digital output)

EN5

12

I/O

Voltage rail 5 enable (digital output)

EN6

13

I/O

Voltage rail 6 enable (digital output)

EN7

14

I/O

Voltage rail 7 enable (digital output)

EN8/ADDR1/

25

I/O

Voltage rail 8 enable (digital output), I2C address select 1, general-purpose digital output 1

GPO1

MON1

6

I

Analog input for voltage rail 1

MON2

7

I

Analog input for voltage rail 2

MON3

8

I

Analog input for voltage rail 3

MON4

18

I

Analog input for voltage rail 4

MON5

19

I

Analog input for voltage rail 5

MON6

9

I

Analog input for voltage rail 6

MON7

15

I

Analog input for voltage rail 7

MON8

16

I

Analog input for voltage rail 8

NC

2

Do not connect.

4,17,

NC

Not connected internally. Connect to VSS.

20, 31

Internal oscillator frequency adjust. Must use 100-k

Ω pullup to VCC for minimum drift and maximum

ROSC

32

frequency when sampling voltage rails.

RST

5

I

Reset input

SCL

22

I/O

I2C clock. A pullup rwesistor to 3.3 V is required.

SDA

21

I/O

I2C data (bidirectional). A pullup resistor to 3.3 V is required.

TEST

29

I

Connect to VSS

VCC

30

Supply voltage

VSS

1

Ground reference

XIN

3

Connect to VCC

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