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ADM1184 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 ADM1184은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 ADM1184 자료 제공

부품번호 ADM1184 기능
기능 0.8% Accurate Quad Voltage Monitor
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ADM1184 데이터시트, 핀배열, 회로
0.8% Accurate Quad Voltage Monitor
ADM1184
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
levels with external resistor dividers
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
FUNCTIONAL BLOCK DIAGRAM
VCC
VIN1
VIN2
VIN3
VIN4
ADM1184
REF = 0.6V
REF = 0.6V
REF = 0.6V
REF = 0.6V
POWER AND
REFERENCE
REF = 0.6V
GENERATOR
INTERNAL
LOGIC
OUT1
OUT2
OUT3
PWRGD
GND
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.
Figure 1.
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).
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
Free Datasheet http://www.datasheet4u.com/




ADM1184 pdf, 반도체, 판매, 대치품
ADM1184
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 2.
Parameter
VCC Pin
VINx Pins
OUTx, PWRGD Pins
Storage Temperature Range
Operating Temperature Range
Lead Temperature Soldering (10 sec)
Junction Temperature
Rating
−0.3 V to +6 V
−0.3 V to +6 V
−0.3 V to +6 V
−65°C to +125°C
−40°C to +85°C
300°C
150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 3. Thermal Resistance
Package Type
10-Lead MSOP
θJA
137.5
Unit
°C/W
ESD CAUTION
Rev. 0 | Page 4 of 12
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ADM1184 전자부품, 판매, 대치품
60
100mV OVERDRIVE
50
40
30
20
10
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
SUPPLY VOLTAGE (V)
Figure 9. VINx to Output Falling Delay vs. Supply Voltage
50
VCC = 3.3V, 100mV OVERDRIVE
40
30
20
10
0
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
Figure 10. VINx to Output Falling Delay vs. Temperature
0.610
0.608
0.606
0.604
0.602
0.600
0.598
0.596
0.594
0.592
0.590
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
Figure 11. VINx Trip Threshold vs. Temperature
ADM1184
180
160
140
120
100
80
60
40
20
0
0 10 20 30 40 50 60 70 80 90 100
INPUT OVERDRIVE (mV)
Figure 12. Trip Threshold Maximum Transient Duration vs. Input Overdrive
200
APPLICABLE TO
180
CHANNEL 1,
CHANNEL 2,
160 AND CHANNEL 3
140
120
100
80
60
40
20
0
0 10 20 30 40 50 60 70 80 90
INPUT OVERDRIVE (mV)
Figure 13. Propagation Delay vs. Input Overdrive
100
400
350
300
250
200
150
100
50
0
0 2 4 6 8 10 12 14 16 18 20 22 24
OUTPUT SINK CURRENT (mA)
Figure 14. Output Low Voltage vs. Output Sink Current
Rev. 0 | Page 7 of 12
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