ISL8702AIBZ Intersil, ISL8702AIBZ Datasheet

ISL8702AIBZ

Manufacturer Part Number

ISL8702AIBZ

Description

IC SEQUENCER QUAD ADJ 14-SOIC

Manufacturer

Intersil

Type

Sequencerr

Datasheet

1.ISL8702AIBZ.pdf (12 pages)

Specifications of ISL8702AIBZ

Number Of Voltages Monitored

Output

Open Drain or Open Collector

Reset

Active High/Active Low

Reset Timeout

Adjustable/Selectable

Voltage - Threshold

Adjustable/Selectable

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

14-SOIC (3.9mm Width), 14-SOL

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL8702AIBZ

Manufacturer:

HARRIS

Quantity:

20 000

Current page: 1 of 12
Download datasheet (285Kb)

Adjustable Quad Sequencer

The ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A,

ISL8705A family of ICs provide four delay adjustable

sequenced outputs while monitoring an input voltage all with

a minimum of external components.

High performance DSP, FPGA, µP and various sub-systems

require input power sequencing for proper functionality at

initial power up and the ISL870XA provides this function

while monitoring the distributed voltage for over and

undervoltage compliance.

These ICs operate over the +3.3V to +24V nominal voltage

range. All have a user adjustable time from UV and OV

voltage compliance to sequencing start via an external

capacitor when in auto start mode and adjustable time delay

to subsequent ENABLE output signal via external resistors.

Additionally, the ISL8702A, ISL8703A, ISL8704A and

ISL8705A provide I/O for sequencing on and off operation

(SEQ_EN) and for voltage window compliance reporting

(FAULT) over the +3.3V to +24V nominal voltage range.

Easily daisy chained for more than 4 sequenced signals.

Altogether, the ISL870XA provides these adjustable features

with a minimum of external BOM. See Figure 1 for typical

implementation.

Ordering Information

ISL8700AIBZ*

ISL8701AIBZ*

ISL8702AIBZ*

ISL8703AIBZ*

ISL8704AIBZ*

ISL8705AIBZ*

ISL870XAEVAL1 Evaluation Platform

*Add “-T” suffix for tape and reel.

NOTES:

PART NUMBER

1. Intersil Pb-free plus anneal products employ special Pb-free material

(Note 1)

sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

ISL8700AIBZ

ISL8701AIBZ

ISL8702AIBZ

ISL8703AIBZ

ISL8704AIBZ

ISL8705AIBZ

MARKING

PART

RANGE (°C)

-40 to +85

TEMP.

Data Sheet

14 Ld SOIC

PACKAGE

(Pb-free)

1-888-INTERSIL or 1-888-468-3774

M14.15

DWG. #

PKG.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

ISL8701A, ISL8703A, ISL8705A PINS 1-4 ARE ENABLE# FUNCTION

ISL8704A, ISL8705A PIN 9 IS SEQ_EN# FUNCTION

ISL8700A, ISL8701A, ISL8702A,

ISL8703A, ISL8704A, ISL8705A

* SEQ_EN and FAULT are not available on ISL8700A and ISL8701A

Features

• Adjustable Delay to Subsequent Enable Signal

• Adjustable Delay to Sequence Auto Start

• Adjustable Distributed Voltage Monitoring

• Under and Overvoltage Adjustable Delay to Auto Start

• I/O Options

• Voltage Compliance Fault Output

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Power Supply Sequencing

• System Timing Function

Pinout

Sequence

ENABLE (ISL8700A, ISL8702A, ISL8704A) and

ENABLE# (ISL8701A, ISL8703A, ISL8705A)

SEQ_EN (ISL8702A, ISL8703A) and

SEQ_EN# (ISL8704A, ISL8705A)

3.3-24V

October 12, 2006

All other trademarks mentioned are the property of their respective owners.

ENABLE_D

ENABLE_C

ENABLE_B

ENABLE_A

SEQ_EN *

FIGURE 1. ISL870XA IMPLEMENTATION

Intersil (and design) is a registered trademark of Intersil Americas Inc.

GND TB TC TD TIME

VIN

GND

ENABLE_A

ENABLE_B

ENABLE_C

ENABLE_D

(14 LD SOIC)

TOP VIEW

ISL870XA

FAULT *

VIN

TIME

SEQ_EN (NC on ISL8700A/01A)

FAULT (NC on ISL8700A/01A)

DC/DC

FN6381.0

Vo2

Vo1

Vo3

V04

Related parts for ISL8702AIBZ

ISL8702AIBZ Summary of contents

Page 1

... Ordering Information PART NUMBER PART TEMP. (Note 1) MARKING RANGE (°C) ISL8700AIBZ* ISL8700AIBZ -40 to +85 ISL8701AIBZ* ISL8701AIBZ -40 to +85 ISL8702AIBZ* ISL8702AIBZ -40 to +85 ISL8703AIBZ* ISL8703AIBZ -40 to +85 ISL8704AIBZ* ISL8704AIBZ -40 to +85 ISL8705AIBZ* ISL8705AIBZ -40 to +85 ISL870XAEVAL1 Evaluation Platform *Add “-T” suffix for tape and reel. NOTES: 1. Intersil Pb-free plus anneal products employ special Pb-free material sets ...

Page 2

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A Absolute Maximum Ratings V , ENABLE(#), FAULT . . . . . . . . . . . . . . . . . . . . . . . 27V, to -0.3V IN ...

Page 3

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A Pin Descriptions PINS 8700A 8701A 8702A 8703A 8704A 8705A ...

Page 4

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A Functional Block Diagram VIN VREF 1.17V SEQ_EN + FAULT 30μs GND V TIME_VTH TIME Functional Description The ISL870XA family of ICs provides four delay adjustable sequenced outputs while ...

Page 5

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A On the ISL8702A, ISL8703A, ISL8704A and ISL8705A, enabling off sequencing can also be signaled via the SEQ_EN or SEQ_EN# input pin once voltage compliance is met. Initially, the SEQ_EN pin should ...

Page 6

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A An Advanced Tutorial on Setting UV and OV Levels This section discusses in additional detail the nuances of setting the UV and OV levels, providing more insight into the ISL870XA than the earlier text. ...

Page 7

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A OVERVOLTAGE LIMIT UNDERVOLTAGE LIMIT t FLTL MONITORED VOLTAGE RAMPING UP AND DOWN FAULT OUTPUT FIGURE 3. ISL8702A, ISL8703A, ISL8704A, ISL8705A FAULT OPERATIONAL DIAGRAM Typical Performance Curves 1.208 1.207 1.206 1.205 1.204 V = 2.5V ...

Page 8

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A VMON > UV LEVEL FAULT OUTPUT FIGURE 6. VMONITOR RISING TO FAULT DELAY = 5ms R = 51k TC DELAY = 86ms R = 120k TD DELAY = 196ms FIGURE ...

Page 9

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A SEQ_EN# ENABLE_A# ENABLE_B# ENABLE_C# ENABLE_D# FIGURE 12. ISL8705A ENABLE_X# TO ENABLE_X# FIGURE 14. OV AND UV TRANSIENT IMMUNITY 9 SEQ_EN TIME 0.5V/DIV FIGURE 13. SEQ_EN TO ENABLE_A VMONITOR OV VMONITOR UV FAULT = LOW ...

Page 10

ISL8700A, ISL8701A, ISL8702A, ISL8703A, ISL8704A, ISL8705A Application Recommendations Best practices V decoupling is required, a 1μF capacitor is IN recommended. Coupling from the ENABLE_X pins to the sensitive UV and OV pins can cause false OV/UV events to be detected. ...

Page 11

... Decoupling Capacitor 11 PULL-UP RESISTORS TIMING COMPONENTS UV/OV SET RESISTORS COMPONENT DESCRIPTION Intersil, ISL8702A, Quad Under/Overvoltage Sequencer 1.1kΩ 1%, 0603 88.7kΩ 1%, 0603 9.1kΩ 1%, 0603 0.01μF, 0603 120kΩ 1%, 0603 3.01kΩ 1%, 0603 51kΩ 1%, 0603 4kΩ 10%, 0402 1μF, 0603 FN6381 ...

Page 12

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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