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Enpirion Power Datasheet ES1022SI Adjustable Quad Sequencer

May 2014

Altera Corporation

Pinout

ES1022SI

(14 LD SOIC)

TOP VIEW

Pin Descriptions

Pin

Number

PIN NAME

FUNCTION DESCRIPTION

1

EN_D

EN output D. Active high open drain sequenced output. Sequenced on after EN_C and first output to sequence off. Pulls low

2

EN_C

EN output C. Active high open drain sequenced output. Sequenced on after EN_B and sequenced off after EN_D. Pulls low

3

EN_B

EN output B. Active high open drain sequenced output. Sequenced on after EN_A and sequenced off after EN_C. Pulls low

4

EN_A

EN output A. Active high open drain sequenced output. Sequenced on after CTIME period and sequenced off after EN_B. Pulls

5

OV

The voltage on this pin must be under its 1.22V Vth or the four EN outputs will be immediately pulled down.

6

UV

The voltage on this pin must be over its 1.22V Vth or the four EN outputs will be immediately pulled down.

7

GND

IC ground.

8

FAULT

9

SEQ_EN

This pin provides a sequence on signal input with a high input. Internally pulled high to ~2.4V.

10

TIME

with a capacitor to ground.

11

TDLY_AB

A resistor connected from this pin to ground determines the time delay from EN_A being active to EN _B being active on turn-

on and also going inactive on turn-off via the SEQ_EN input.

12

TDLY_BC

A resistor connected from this pin to ground determines the time delay from EN_B being active to EN _C being active on turn-

on and also going inactive on turn-off via the SEQ_EN input.

13

TDLY_CD

A resistor connected from this pin to ground determines the time delay from EN_C being active to EN _D being active on turn-

on and also going inactive on turn-off via the SEQ_EN input.

14

IC Bias Pin Nominally 3.3V to 24V

This pin requires a 1

μF decoupling capacitor close to IC pin.

EN_D

EN_C

EN_B

EN_A

1

2

3

4

5

VIN

TDLY_CD

TDLY_BC

TDLY_AB

6

7

8

9

14

TIME

SEQ_EN

FAULT

OV

UV

GND

13

12

11

10

10037

May 28, 2014

Rev A