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ADM1186 반도체 회로 부품 판매점

Quad Voltage Up and Down Sequencer and Monitor



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Analog Devices
ADM1186 데이터시트, 핀배열, 회로
Data Sheet
Quad Voltage Up and Down Sequencer
and Monitor with Programmable Timing
ADM1186
FEATURES
Powered from 2.7 V to 5.5 V on the VCC pin
Monitors four supplies via 0.8% accurate comparators
Digital core supports up and down supply sequencing
Multiple devices can be cascaded (ADM1186-1)
Four inputs can be programmed to monitor different voltage
levels with resistor dividers
Capacitor programmable supply sequence time delays
and a timeout delay to 5% accuracy at 25°C
Four open-drain enable outputs
Open-drain power-good output
Open-drain sequence complete pin and bidirectional
open-drain fault pin (ADM1186-1 only)
APPLICATIONS
Monitor and alarm functions
Up and down power supply sequencing
Telecommunication and data communication equipment
PCs, servers, and notebook PCs
GENERAL DESCRIPTION
The ADM1186-1 and ADM1186-2 are integrated, four-channel
voltage monitoring and sequencing devices. A 2.7 V to 5.5 V
power supply is required on the VCC pin for power.
Four precision comparators, VIN1 to VIN4, monitor four
voltage rails. All four comparators share a 0.6 V reference and
have a worst-case accuracy of 0.8%. Resistor networks that are
external to the VIN1, VIN2, VIN3, and VIN4 pins set the
undervoltage (UV) trip points for the monitored supply rails.
The ADM1186-1 and ADM1186-2 have four open-drain enable
outputs, OUT1 to OUT4, that are used to enable power supplies.
An open-drain power-good output, PWRGD, indicates whether
the four VINx inputs are above their UV thresholds.
A state machine monitors the state of the UP and DOWN pins
on the ADM1186-1 or the UP/DOWN pin on the ADM1186-2
to control the supply sequencing direction (see Figure 2). In the
WAIT START state, a rising edge transition on the UP or
UP/DOWN pin triggers a power-up sequence. A falling edge
transition on the DOWN or UP/DOWN pin in the POWER-UP
DONE state triggers a power-down sequence.
3.3V AUX
SEQUENCE CONTROL
3.3V AUX
1µF
100nF
APPLICATION DIAGRAM
5V
5V
IN
ADP1706
EN OUT
5V
5V
IN
ADP2107
EN OUT
3.3V AUX
3.3V AUX
IN
ADP1821
EN OUT
5V
5V
IN
ADP1706
EN OUT
VCC OUT1 OUT2 OUT3 OUT4
FAULT
UP
DOWN
ADM1186-1
DLY_EN_OUT1
VIN1
VIN2
VIN3
VIN4
DLY_EN_OUT2
DLY_EN_OUT3
DLY_EN_OUT4
PWRGD
BLANK_DLY
GND
SEQ_DONE
2.5V AUX
2.5V
1.8V
1.2V
3.3V
3.3V AUX
Figure 1.
Rev. B
Document Feedback
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


ADM1186 데이터시트, 핀배열, 회로
ADM1186* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
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Evaluation Kits
• ADM1186 Evaluation Board
Documentation
Application Notes
• AN-1311: Complex Power Supply Sequencing Made Easy
Data Sheet
• ADM1186: Quad Voltage Up and Down Sequencer and
Monitor with Programmable Timing Data Sheet
Reference Materials
Product Selection Guide
• Supervisory Devices Complementary Parts Guide for Altera
FPGAs
• Supervisory Devices Complementary Parts Guide for Xilinx
FPGAs
Design Resources
• ADM1186 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all ADM1186 EngineerZone Discussions
Sample and Buy
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Technical Support
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frequently modified.




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