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ADM1085 の電気的特性と機能

ADM1085のメーカーはAnalog Devicesです、この部品の機能は「Simple Sequencers in 6-Lead SC70」です。


製品の詳細 ( Datasheet PDF )

部品番号 ADM1085
部品説明 Simple Sequencers in 6-Lead SC70
メーカ Analog Devices
ロゴ Analog Devices ロゴ 




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ADM1085 Datasheet, ADM1085 PDF,ピン配置, 機能
Data Sheet
Simple Sequencers® in 6-Lead SC70
ADM1085/ADM1086/ADM1087
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 (up to 22 V) open-drain output
(ADM1085/ADM1087)
Push-pull output (ADM1086)
Capacitor-adjustable time delays
High voltage (up to 22 V) enable and VIN inputs
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
FUNCTIONAL BLOCK DIAGRAMS
VCC
ADM1085/ADM1086
VIN
0.6V
CAPACITOR
ADJUSTABLE
DELAY
ENOUT
GND
CEXT
ENIN
ADM1087
VIN
0.6V
VCC
CAPACITOR
ADJUSTABLE
DELAY
ENOUT
GND
CEXT
ENIN
Figure 1.
GENERAL DESCRIPTION
The ADM1085/ADM1086/ADM1087 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 has a push-pull output stage, with active high
(ENOUT). 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.
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.
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.
Enable Input
Output Stage
ENOUT
ENOUT
ADM1085
ENIN
Open-drain
ADM1086
ENIN
Push-pull
ADM1087
ENIN
Open-drain
Rev. B
Document Feedback
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 ©2004–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

1 Page





ADM1085 pdf, ピン配列
Data Sheet
ADM1085/ADM1086/ADM1087
SPECIFICATIONS
VCC = full operating range, TA = −40°C to +125°C, unless otherwise noted.
Table 2.
Parameter
SUPPLY
VCC Operating Voltage Range
VIN Operating Voltage Range
Supply Current
VIN Rising Threshold, VTH_RISING
VIN Falling Threshold, VTH_FALLING
VIN Hysteresis
VIN to ENOUT/ENOUT Delay
VIN Rising
VIN Falling
VIN Leakage Current
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
Min Typ Max
2.25
0
0.56
0.545
10
0.6
0.585
15
3.6
22
15
0.64
0.625
35
2
20
170
125 250
30
0.5
0.3 VCC + 0.2
170
375
0.3 VCC − 0.2
0.4
ENOUT/ENOUT Voltage High
(ADM1086)
ENOUT/ENOUT Open-Drain Output
Leakage Current (ADM1085/ADM1087)
0.8 VCC
0.4
Unit
V
V
μA
V
V
mV
μs
ms
μs
μA
nA
ppm/°C
μs
V
V
μA
V
V
μA
Test Conditions/Comments
VCC = 3.3 V
VCC = 3.3 V
CEXT floating, C = 20 pF
CEXT = 470 pF
VIN = VTH_FALLING to (VTH_FALLING − 100 mV)
VIN = 22 V
VIN > VTH_RISING
ENIN/ENIN = 22 V
VIN < VTH_FALLING (ENOUT),
VIN > VTH_RISING (ENOUT),
ISINK = 1.2 mA
VIN > VTH_RISING (ENOUT),
VIN < VTH_FALLING (ENOUT),
ISOURCE = 500 μA
ENOUT/ENOUT = 22 V
Rev. B | Page 3 of 16


3Pages


ADM1085 電子部品, 半導体
ADM1085/ADM1086/ADM1087
TYPICAL PERFORMANCE CHARACTERISTICS
700
680
660
640
VTRIP RISING
620
600
580
560
VTRIP FALLING
540
520
500
–40
–25 –10 5 20 35 50 65 80 95
TEMPERATURE (°C)
Figure 3. VIN Threshold vs. Temperature
110 125
12.0
11.5
TA = +25°C
11.0
10.5
10.0
TA = –40°C TA = +125°C
9.5
9.0
8.5
8.0
2.1
2.4 2.7 3.0 3.3
VCC (V)
Figure 4. Supply Current vs. Supply Voltage
3.6
20
18
16
14
12
10
8
6
4
2
0
0 2 4 6 8 10 12 14 16 18 20 22
VIN (V)
Figure 5. Supply Current vs. VIN Voltage
Data Sheet
200
180
160
140
120
100
80
60
40
20
0
0
TA = +125°C
TA = +25°C
TA = –40°C
2 4 6 8 10 12 14 16 18 20
VIN (V)
Figure 6. VIN Leakage Current vs. VIN Voltage
22
200
190
TA = +125°C
180
170
160 TA = +25°C
150
140
TA = –40°C
130
120
110
100
2.1
2.4 2.7 3.0 3.3
VCC (V)
Figure 7. VIN Leakage Current vs. VCC Voltage
3.6
10000
TA = +125°C
1000
100
10
TA = +25°C
TA = –40°C
1
0.1
0.01 0.1 1 10 20
OUTPUT SINK CURRENT (mA)
Figure 8. Output Voltage vs. Output Sink Current
100
Rev. B | Page 6 of 16

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共有リンク

Link :


部品番号部品説明メーカ
ADM1085

Simple Sequencers in 6-Lead SC70

Analog Devices
Analog Devices
ADM1086

Simple Sequencers in 6-Lead SC70

Analog Devices
Analog Devices
ADM1087

Simple Sequencers in 6-Lead SC70

Analog Devices
Analog Devices
ADM1088

Simple Sequencers in 6-Lead SC70

Analog Devices
Analog Devices


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