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| 型号： | EVAL-ADM1185EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADM1185 |
| 产品培训模块： | ADM1185 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电源监控器/跟踪器/序列发生器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADM1185 |
| 主要属性： | 4 输入，3 开漏极启用输出 |
| 次要属性： | 开漏极电源正常输出 |
| 已供物品： | 板，文档，样品 IC |
| 相关产品： | ADM1185ARMZ-1REEL7DKR-ND - IC VOLT MONITOR/SEQUENCER 10MSOP ADM1185ARMZ-1REEL7CT-ND - IC VOLT MONITOR/SEQUENCER 10MSOP ADM1185ARMZ-1REEL7TR-ND - IC VOLT MONITOR/SEQUENCER 10MSOP |
Quad Voltage Monitor and Sequencer
ADM1185
FEATURES
Powered from 2.7 V to 5.5 V on the VCC pin
Monitors 4 supplies via 0.8% accurate comparators
FUNCTIONAL BLOCK DIAGRAM
VCC
Logical core with internal timeouts provides power supply
sequencing and fault protection
ADM1185
POWER AND REF = 0.6V
REFERENCE
GENERATOR
OUT1
4 inputs can be programmed to monitor different voltage
levels with resistor dividers
3 open-drain enable outputs
Open-drain power-good output (PWRGD)
10-lead MSOP
VIN1
VIN2
REF = 0.6V
REF = 0.6V
OUT2
APPLICATIONS
Monitor and alarm functions
Power supply sequencing
Telecommunication and data communication equipment
VIN3
VIN4
REF = 0.6V
REF = 0.6V
STATE
MACHINE
CORE
OUT3
PWRGD
PCs/servers
GND
Figure 1.
GENERAL DESCRIPTION
The ADM1185 is an integrated, 4-channel, voltage monitoring
and sequencing 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.
All comparators have 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.
A digital core interprets the status of the comparator outputs.
Internal time delays can be used for sequencing the startup of
subsequent power supplies enabled by the outputs. Supplies
falling out of range are also detected and, as a result, appropriate
outputs are disabled.
The ADM1185 has four open-drain outputs. In a typical
configuration, OUT1 to OUT3 are used to enable power
supplies, while PWRGD is a common power-good output,
indicating the status of all monitored supplies.
The ADM1185 is available in a 10-lead mini small outline
package (MSOP).
APPLICATIONS DIAGRAM
3.3V IN
2.5V OUT
1.8V OUT
1.2V OUT
VCC
ADM1185
VIN1 OUT1
IN
REGULATOR1
EN OUT
2.5V OUT
VIN2
OUT2
GND
IN
VIN3
VIN4
GND
OUT3
PWRGD
REGULATOR2
EN OUT
GND
IN
1.8V OUT
REGULATOR3
POWER
GOOD
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
Figure 2.
EN
OUT
GND
1.2V OUT
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.
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 ?2007–2009 Analog Devices, Inc. All rights reserved.
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