ADM1184ARMZ Analog Devices Inc, ADM1184ARMZ Datasheet

IC VOLT MONITOR/SEQ 4CH 10MSOP

ADM1184ARMZ

Manufacturer Part Number
ADM1184ARMZ
Description
IC VOLT MONITOR/SEQ 4CH 10MSOP
Manufacturer
Analog Devices Inc
Type
Sequencerr
Datasheet

Specifications of ADM1184ARMZ

Number Of Voltages Monitored
4
Output
Open Drain or Open Collector
Reset
Active High
Voltage - Threshold
Adjustable/Selectable
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Threshold Voltage
0.6V
No. Of Supervisors / Monitors
4
Supply Voltage Range
2.7V To 5.5V
Reset Type
Active-High
Supply Current
24µA
Delay Time
190ms
Digital Ic Case Style
MSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Reset Timeout
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADM1184ARMZ-REEL7
Manufacturer:
Crystek Corporation
Quantity:
1 200
Part Number:
ADM1184ARMZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
Powered from 2.7 V to 5.5 V on the VCC pin
Monitors 4 supplies via 0.8% accurate comparators
4 inputs can be programmed to monitor different voltage
3 open-drain enable outputs (OUT1, OUT2, and OUT3)
Open-drain power-good output (PWRGD)
Internal 190 ms delay associated with assertion of PWRGD
10-lead MSOP
APPLICATIONS
Monitor and alarm functions
Telecommunications
Microprocessor systems
PC/servers
GENERAL DESCRIPTION
The ADM1184 is an integrated, 4-channel voltage-monitoring
device. A 2.7 V to 5.5 V power supply is required on the VCC pin
to power the device.
Four precision comparators monitor four voltage rails.
Each comparator has a 0.6 V reference with a worst-case
accuracy of 0.8%. Resistor networks that are external to the
VIN1, VIN2, VIN3, and VIN4 pins set the trip points for
the monitored supply rails.
The ADM1184 has four open-drain outputs. OUT1 to OUT3
can be used to enable power supplies, and PWRGD is a
common power-good output.
Rev. 0
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.
levels with external resistor dividers
0.8% Accurate Quad Voltage Monitor
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
OUT1 to OUT3 are dependent on their associated VINx input
(that is, VIN1, VIN2, or VIN3). If a supply monitored by VINx
drops below its programmed threshold, the associated OUTx pin
and PWRGD are disabled.
PWRGD is a common power-good output indicating the status
of all monitored supplies. There is an internal 190 ms (typical)
delay associated with the assertion of the PWRGD output. If
VIN1, VIN2, VIN3, or VIN4 drops below its programmed
threshold, PWRGD is deasserted immediately.
The ADM1184 is available in a 10-lead mini small outline
package (MSOP).
VIN1
VIN2
VIN3
VIN4
FUNCTIONAL BLOCK DIAGRAM
REF = 0.6V
REF = 0.6V
REF = 0.6V
REF = 0.6V
ADM1184
©2008 Analog Devices, Inc. All rights reserved.
GENERATOR
POWER AND
REFERENCE
Figure 1.
GND
VCC
INTERNAL
LOGIC
REF = 0.6V
ADM1184
www.analog.com
OUT1
OUT2
OUT3
PWRGD

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ADM1184ARMZ Summary of contents

Page 1

FEATURES Powered from 2 5 the VCC pin Monitors 4 supplies via 0.8% accurate comparators 4 inputs can be programmed to monitor different voltage levels with external resistor dividers 3 open-drain enable outputs (OUT1, OUT2, and ...

Page 2

ADM1184 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution.................................................................................. 4 REVISION HISTORY 2/08—Revision 0: Initial ...

Page 3

SPECIFICATIONS −40°C to +85° Table 1. Parameter VCC Pin Operating Voltage Range Supply Current, I VCC VIN1 to VIN4 (VINx) Pins Input Current, I VINLEAK Input Threshold, ...

Page 4

ADM1184 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 2. Parameter VCC Pin VINx Pins OUTx, PWRGD Pins Storage Temperature Range Operating Temperature Range Lead Temperature Soldering (10 sec) Junction Temperature Stresses above those listed under Absolute ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 GND Chip Ground Pin. 2 VIN1 Noninverting Input of Comparator 1. The voltage on this pin is compared with a 0.6 V reference. Can be ...

Page 6

ADM1184 TYPICAL PERFORMANCE CHARACTERISTICS 0.5 1.0 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) Figure 3. Supply Current vs. Supply Voltage ...

Page 7

OVERDRIVE 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 SUPPLY VOLTAGE (V) Figure 9. VINx to Output Falling Delay vs. Supply Voltage 3.3V, 100mV OVERDRIVE CC ...

Page 8

ADM1184 100 1mA SINK 100µA SINK 0 1.0 1.5 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (V) Figure 15. Output Low Voltage vs. Supply Voltage 4.0 4.5 5.0 5.5 Rev ...

Page 9

THEORY OF OPERATION The ADM1184 is an integrated, 4-channel voltage-monitoring device 5.5 V power supply is required on the VCC pin to power the device 2.7V TO 5.5V CC 3.3V 2.5V VCC 1.8V ADM1184 ...

Page 10

ADM1184 ALL INPUTS, OUT1 OUT2 OUT3 PWRGD V VIN1/VIN2/VIN3 TH VIN4 OUT1/OUT2/OUT3 PWRGD Figure 19. Waveforms Showing Reaction to a Temporary Low Glitch on VIN1, VIN2, VIN3, or VIN4 V TH VINx 30µs 190ms Figure 18. Power-Up Waveforms 30µs 30µs ...

Page 11

VOLTAGE MONITORING AND SEQUENCING APPLICATION 3.3V IN 2.5V OUT 1.8V OUT 1.2V OUT Figure 20 depicts an application in which the ADM1184 monitors four separate voltage rails, turns on three regulators in a sequence, and generates a power-good signal to ...

Page 12

... ADM1184 OUTLINE DIMENSIONS ORDERING GUIDE Model Temperature Range 1 ADM1184ARMZ −40°C to +85°C 1 ADM1184ARMZ-REEL7 −40°C to +85° RoHS Compliant Part. ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 3.10 3.00 2.90 ...

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