ADM1086AKSZ-REEL7 Analog Devices Inc, ADM1086AKSZ-REEL7 Datasheet

ADM1086AKSZ-REEL7

Manufacturer Part Number

ADM1086AKSZ-REEL7

Description

IC SIMPLE SEQUENCER P-P SC70-6

Manufacturer

Analog Devices Inc

Type

Sequencerr

Datasheet

1.ADM1087AKSZ-REEL7.pdf (16 pages)

Specifications of ADM1086AKSZ-REEL7

Number Of Voltages Monitored

Output

Push-Pull, Totem Pole

Reset

Active High

Reset Timeout

Adjustable/Selectable

Voltage - Threshold

Adjustable/Selectable

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SC-70-6, SC-88, SOT-363

Threshold Voltage

0.6V

No. Of Supervisors / Monitors

Supply Voltage Range

2.25V To 3.6V

Reset Type

Active-High

Supply Current

15ÂµA

Digital Ic Case Style

SC-70

No. Of Pins

Number Of Voltage Supervisors

Monitored Supervisor Voltage

0.6

Reset Threshold Voltage (min)

560mV

Reset Threshold Voltage (max)

640mV

Operating Supply Voltage (min)

2.25V

Operating Supply Voltage (max)

3.6V

Package Type

SC-70

Operating Temperature Classification

Automotive

Operating Temp Range

-40C to 125C

Pin Count

Mounting

Surface Mount

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

Other names

ADM1086AKSZ-REEL7
ADM1086AKSZ-REEL7TR

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADM1086AKSZ-REEL7

Manufacturer:

ADI/亚德诺

Quantity:

20 000

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FEATURES

Provide programmable time delays between enable

Can be cascaded with power modules for multiple

Power supply monitoring from 0.6 V

Output stages

Capacitor-adjustable time delays

High voltage (up to 22 V) enable and V

Low power consumption (15 μA)

Specified over –40°C to +125°C temperature range

6-lead SC70 package

APPLICATIONS

Desktop/notebook computers, servers

Low power portable equipment

Routers

Base stations

Line cards

Graphics cards

GENERAL DESCRIPTION

The ADM1085/ADM1086/ADM1087/ADM1088 are simple

sequencing circuits that provide a time delay between the

enabling of voltage regulators and/or dc-dc converters at power-

up in multiple supply systems. When the output voltage of the

first power module reaches a preset threshold, a time delay is

initiated before an enable signal allows subsequent regulators to

power up. Any number of these devices can be cascaded with

regulators to allow sequencing of multiple power supplies.

Threshold levels can be set with a pair of external resistors in a

voltage divider configuration. With appropriate resistor values,

the threshold can be adjusted to monitor voltages as low as 0.6 V.

The ADM1086 and ADM1088 have push-pull output stages,

with active high (ENOUT) and active low ( ENOUT ) logic

outputs, respectively. The ADM1085 has an active-high

(ENOUT) logic output; the ADM1087 has an active-low

( ENOUT ) output. Both the ADM1085 and ADM1087 have

open-drain output stages that can be pulled up to voltage levels

as high as 22 V through an external resistor. This level-shifting

property ensures compatibility with enable input logic levels of

different regulators and converters.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

signals

supply sequencing

(ADM1085/ADM1087)

Push-pull output (ADM1086/ADM1088)

High voltage (up to 22 V) open-drain output

inputs

ADM1085/ADM1086/ADM1087/ADM1088

Simple Sequencers

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

All four models have a dedicated enable input pin that allows

the output signal to the regulator to be controlled externally.

This is an active high input (ENIN) for the ADM1085 and

ADM1086, and an active low input ( ENIN ) for the ADM1087

and ADM1088.

The Simple Sequencers are specified over the extended

−40°C to +125°C temperature range. With low current

consumption of 15 μA (typical) and 6-lead SC70 packaging,

the parts are suitable for low-power portable applications.

Table 1. Selection Table

Part No.

ADM1085

ADM1086

ADM1087

ADM1088

ADM1085/ADM1086

ADM1087/ADM1088

0.6V

FUNCTIONAL BLOCK DIAGRAMS

Enable Input

ENIN

GND

ADJUSTABLE

CAPACITOR

DELAY

Figure 1.

CEXT

in 6-Lead SC70

ENOUT

Open-drain

Push-pull

ENIN

Output Stage

www.analog.com

ENOUT

Open-drain

Push-pull

ENOUT

Related parts for ADM1086AKSZ-REEL7

ADM1086AKSZ-REEL7 Summary of contents

Page 1

FEATURES Provide programmable time delays between enable signals Can be cascaded with power modules for multiple supply sequencing Power supply monitoring from 0.6 V Output stages High voltage ( open-drain output (ADM1085/ADM1087) Push-pull output (ADM1086/ADM1088) Capacitor-adjustable time ...

Page 2

ADM1085/ADM1086/ADM1087/ADM1088 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagrams............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ............................................. ...

Page 3

SPECIFICATIONS V = full operating range −40°C to +125°C, unless otherwise noted Table 2. Parameter SUPPLY V Operating Voltage Range CC V Operating Voltage Range IN Supply Current V Rising Threshold TH_RISING V Falling ...

Page 4

ADM1085/ADM1086/ADM1087/ADM1088 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter CEXT ENIN, ENIN ENOUT, ENOUT (ADM1085, ADM1087) ENOUT, ENOUT (ADM1086, ADM1088) Operating Temperature Range Storage Temperature Range θ Thermal Impedance, SC70 JA ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 ENIN, ENIN Enable Input. Controls the status of the enable output. Active high for ADM1085/ADM1086. Active low for ADM1087/ADM1088. 2 GND Ground Input ...

Page 6

ADM1085/ADM1086/ADM1087/ADM1088 TYPICAL PERFORMANCE CHARACTERISTICS 700 680 660 640 V RISING TRIP 620 600 580 560 V FALLING TRIP 540 520 500 –40 –25 – TEMPERATURE (°C) Figure 3. V Threshold vs. Temperature IN 12.0 11.5 ...

Page 7

SUPPLY VOLTAGE (V) Figure 9. Output Low Voltage vs. Supply Voltage 100 1mV/µ 10mV/µ –40 –25 – ...

Page 8

ADM1085/ADM1086/ADM1087/ADM1088 300 280 260 240 220 200 180 160 140 120 100 –40 –25 – TEMPERATURE (°C) Figure 15. CEXT Charge Current vs. Temperature 100 ...

Page 9

CIRCUIT INFORMATION TIMING CHARACTERISTICS AND TRUTH TABLES The enable outputs of the ADM1085/ADM1086/ADM1087/ ADM1088 are related to the V and enable inputs by a simple IN AND function. The enable output is asserted only if the enable input is asserted ...

Page 10

ADM1085/ADM1086/ADM1087/ADM1088 OPEN-DRAIN AND PUSH-PULL OUTPUTS The ADM1085 and ADM1087 have open-drain output stages that require an external pull-up resistor to provide a logic high voltage level. The geometry of the NMOS transistor enables the output to be pulled up to ...

Page 11

APPLICATION INFORMATION SEQUENCING CIRCUITS The ADM1085/ADM1086/ADM1087/ADM1088 are compatible with voltage regulators and dc-to-dc converters that have active high or active low enable or shutdown inputs, with a choice of open-drain or push-pull output stages. Figure 23 to Figure 25 illustrate ...

Page 12

ADM1085/ADM1086/ADM1087/ADM1088 12V IN EN OUT DC/DC 3.3V 3. ENOUT IN ADM1086 ENIN CEXT ENABLE CONTROL 12V 3.3V 2.5V 1.8V 1.2V 12V IN SD OUT ADP3334 3.3V 3. ENOUT IN ADM1087 ENIN CEXT Figure 25. ...

Page 13

DUAL LOFO SEQUENCING A power sequencing solution for a portable device, such as a PDA, is shown in Figure 27. This solution requires that the microprocessor power supply turn on before the LCD display turns on, and that the LCD ...

Page 14

ADM1085/ADM1086/ADM1087/ADM1088 QUAD-SUPPLY POWER GOOD INDICATOR The enable output of the Simple Sequencers is equivalent to an AND function of V and ENIN. ENOUT is high only when IN the voltage above the threshold and the enable input ...

Page 15

... Temperature Model Range ADM1085AKS-REEL7 −40°C to +125°C ADM1085AKSZ-REEL7 1 −40°C to +125°C ADM1086AKS-REEL7 −40°C to +125°C 1 ADM1086AKSZ-REEL7 −40°C to +125°C ADM1087AKS-REEL7 −40°C to +125°C ADM1087AKSZ-REEL7 1 −40°C to +125°C ADM1088AKS-REEL7 −40°C to +125°C 1 ADM1088AKSZ-REEL7 −40°C to +125°C ...

Page 16

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