ADM1086 Analog Devices, ADM1086 Datasheet
ADM1086
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ADM1086 Summary of contents
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... 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 − ...
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... 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 ............................................. 6 Circuit Information .......................................................................... 9 Timing Characteristics and Truth Tables.................................. 9 REVISION HISTORY 4/06—Rev Rev. A Added Lead-Free Models ..................................................Universal Update Outline Dimensions ...
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... IN CEXT Charge Current Threshold Temperature Coefficient ENIN/ENIN to ENOUT/ENOUT Propagation Delay ENIN/ENIN Voltage Low ENIN/ENIN Voltage High ENIN/ENIN Leakage Current ENOUT/ENOUT Voltage Low ENOUT/ENOUT Voltage High (ADM1086/ADM1088) ENOUT/ENOUT Open-Drain Output Leakage Current (ADM1085/ADM1087) ADM1085/ADM1086/ADM1087/ADM1088 Min Typ Max Unit 2.25 3 μA ...
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... 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 Lead Temperature Soldering (10 sec) Vapor Phase (60 sec) Infrared (15 sec) ESD CAUTION ESD (electrostatic discharge) sensitive device ...
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... 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 for the Monitored Voltage Signal. Can be biased via a voltage divider resistor network to customize the IN effective input threshold ...
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... 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 11.0 10.5 10 –40°C A 9.5 9.0 8.5 8.0 2.1 2.4 2.7 3.0 V (V) CC Figure 4. Supply Current vs. Supply Voltage 20 18 ...
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... Falling Propagation Delay vs. Temperature CC 500 450 400 350 300 250 200 150 100 50 0 2.1 2.4 2.7 3.0 SUPPLY VOLTAGE (V) Figure 11. Output Fall Time vs. Supply Voltage ADM1085/ADM1086/ADM1087/ADM1088 200 180 160 140 120 100 3.3 3.6 0 Figure 12. ENIN/ ENIN Leakage Current vs. ENIN/ ENIN Voltage 200 180 160 ...
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... 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 –40 –25 – TEMPERATURE (°C) to ENOUT/ ENOUT Propagation Delay (CEXT Floating) vs. ...
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... 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 and the voltage above V IN the time delay elapsed. Table 5 and Table 6 show the enable ...
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... V. V (≤22V) CC ADM1085/ADM1087 Figure 21. Open-Drain Output Stage The ADM1086 and ADM1088 have push-pull (CMOS) output stages that require no external components to drive other logic circuits. An internal PMOS pull-up transistor provides the logic high voltage level. LOGIC Rev Page ...
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... Figure 23 to Figure 25 illustrate how each of the ADM1085/ADM1086/ ADM1087/ADM1088 simple sequencers can be used in multiple-supply systems, depending on which regulators are used and which output stage is preferred. ...
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... Figure 25. Typical ADM1087 Application Circuit Using ADP3334 Voltage Regulators IN EN OUT EN DC/DC 2.5V 3. ENOUT IN ADM1086 ENIN CEXT EN1 EN2 EN3 Figure 24. Typical ADM1086 Application Circuit 12V IN SD OUT SD ADP3334 2.5V Rev Page OUT EN DC/DC DC/DC 1.8V 3. ENOUT IN ADM1086 ENIN CEXT ...
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... For example notebook PC application, a dedicated microcomputer asserts a power good signal for North Bridge™ and South Bridge™ ICs. The ADM1086 delays the South Bridge MICROPROCESSOR signal, so that it is enabled after the North Bridge. ...
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... 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 IN (ENIN) is high as well. Although ENIN is a digital input, it can tolerate voltages as high and can detect if a supply is present ...
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... 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 EVAL-ADM1087EB Pb-free part. ADM1085/ADM1086/ADM1087/ADM1088 2.20 2.00 1.80 2.40 1. 1.25 2.10 1.80 1. PIN 1 0.65 BSC 1.30 BSC 1 ...
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... ADM1085/ADM1086/ADM1087/ADM1088 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04591-0-4/06(A) T Rev Page ...