Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc. ADM1186-2ARQZ-REEL

Name: ADM1186-2ARQZ-REEL
Brand: Analog Devices Inc.
SKU: ADM1186-2ARQZ-REEL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: ADM1186-2ARQZ-REEL

Manufacturer:: Analog Devices Inc.

Category:: Supervisors

Package:: 16-SSOP (0.154", 3.90mm Width)

Datasheet:: ADM1186-2ARQZ-REEL.pdf

Description:: IC SUPERVISOR 4 CHANNEL 16QSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,646

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

ADM1186-2ARQZ-REEL from Analog Devices is a quad-channel voltage up/down sequencer and monitor with programmable timing, designed for precise power supply sequencing in multi-rail systems. It features four 0.8% accurate comparators, capacitor-programmable sequence delays (±5% accuracy at 25°C), open-drain enable outputs (OUT1–OUT4), and an open-drain PWRGD output. It operates from 2.7 V to 5.5 V and supports bidirectional sequencing control via a single UP/DOWN pin - used in server motherboard power management and FPGA-based embedded systems.

For engineers reviewing the ADM1186-2ARQZ-REEL datasheet, ADM1186-2ARQZ-REEL pinout, ADM1186-2ARQZ-REEL application, or ADM1186-2ARQZ-REEL equivalent, key selection considerations include its 16-lead QSOP package, absence of SEQ_DONE and FAULT pins (vs. ADM1186-1), capacitor-based delay tuning, UV threshold accuracy, and compatibility with cascaded sequencing in telecom and industrial computing platforms.

Technical Context

The ADM1186-2 implements a deterministic finite-state machine that executes up/down sequencing based on edge-triggered transitions on its single UP/DOWN pin. It uses a shared 0.6 V internal reference for all four VINx comparators, with external resistor dividers setting per-rail undervoltage thresholds. Blanking time (set by BLANK_DLY capacitor) and inter-output delays (DLY_EN_OUT1–DLY_EN_OUT4) are independently programmable with ±5% timing accuracy at 25°C.

Unlike the ADM1186-1, the ADM1186-2 omits the SEQ_DONE and FAULT pins and replaces separate UP/DOWN inputs with a dual-function UP/DOWN pin - reducing pin count while retaining full bidirectional sequencing capability. Its state machine enforces strict fault handling: any UV condition on VIN1–VIN4 or unexpected UP/DOWN transition immediately halts sequencing and asserts all OUTx low.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	2.7 V to 5.5 V - powers internal logic and comparators; UVLO activates below 2.46 V to ensure known output states.
VINx Accuracy	±0.8% worst-case - enables reliable undervoltage detection across temperature (−40°C to +85°C) using external resistor dividers.
Time Delay Accuracy	±5% at 25°C - allows predictable, capacitor-tuned sequencing intervals (10 nF–2.2 µF range) without trimming.
Response Time	5.5–12.1 µs (UP/DOWN to OUTx) - ensures rapid fault reaction and tight timing control during dynamic sequencing events.
Output Type	Open-drain, active-high OUT1–OUT4 and PWRGD - supports wired-OR logic, level translation, and direct interfacing with enable inputs of DC/DC regulators.
Glitch Immunity	3.3–9.7 µs (UP/DOWN input) - filters noise on control lines to prevent spurious sequencing triggers in electrically noisy environments.
Supply Current	146–210 µA (steady state) - enables low-power operation in always-on sequencing supervision circuits.

Pinout & Package

ADM1186-2ARQZ-REEL is housed in a 16-lead QSOP package (3.9 mm × 4.9 mm, 0.635 mm pitch), optimized for space-constrained PCB layouts in high-density computing and telecom equipment.

Pin/Terminal	Circuit Role	Design Meaning
VIN1–VIN4	Noninverting comparator inputs	Monitor four independent voltage rails via external resistor dividers; each compared to 0.6 V reference for UV detection.
UP/DOWN	Edge-triggered sequencing control	Rising edge initiates power-up; falling edge initiates power-down - eliminates need for separate UP/DOWN pins.
OUT1–OUT4	Open-drain enable outputs	Drive enable inputs of DC/DC converters; asserted high after programmed delays to enforce strict rail activation order.
PWRGD	Open-drain power-good output	Logic AND of all VINx states - goes high only when all four monitored rails exceed their UV thresholds.
BLANK_DLY	Blanking time timing input	Capacitor sets minimum wait time before VINx compliance check - prevents false faults during slow-rising supplies.
DLY_EN_OUT1–DLY_EN_OUT4	Sequence delay timing inputs	Capacitors set inter-output delays during both power-up and power-down sequences - enables asymmetric timing profiles.
GND / VCC	Power supply terminals	Single 2.7–5.5 V supply powers entire device; GND provides reference for all analog and digital functions.

Key Features

Feature	Design Value
Quad-channel UV monitoring	Four independent 0.8% accurate comparators share one 0.6 V reference - reduces BOM count and improves matching vs. discrete solutions.
Capacitor-programmable delays	Five dedicated timing pins (BLANK_DLY + DLY_EN_OUT1–4) allow fully customizable up/down sequencing intervals without firmware or external logic.
Bidirectional sequencing control	Single UP/DOWN pin replaces dual UP/DOWN inputs - simplifies system-level control wiring and reduces host GPIO usage.
Open-drain output architecture	All outputs (OUT1–OUT4, PWRGD) are open-drain - supports flexible voltage translation, wired-OR fault signaling, and safe hot-swap enable sequencing.
Fault-immune state machine	Automatic entry into fault-handling mode on any UV event or invalid UP/DOWN transition - guarantees all outputs go low within 12.1 µs to protect downstream circuitry.

Applications

Server Power Management	FPGA/ASIC Core Sequencing
Use Scenario: Sequencing 12 V, 5 V, 3.3 V, and 1.2 V rails on a dual-socket server motherboard during cold boot and graceful shutdown. IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL acts as the hardware-based sequencing supervisor, enforcing strict voltage ramp order and detecting undervoltage faults before enabling CPU or memory subsystems. Use Value: Prevents latch-up and inrush current damage by ensuring core voltages stabilize before I/O rails activate - validated per Intel VRD13 and AMD SVI2 specifications.	Use Scenario: Controlling power-up/down of auxiliary, I/O, and core rails for Xilinx Kintex Ultrascale+ FPGA in a reconfigurable radio platform. IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL serves as the autonomous sequencing engine, using capacitor-tuned delays to meet FPGA vendor-specified tVDDIO > tVCCINT > tVCCAUX timing requirements. Use Value: Eliminates need for FPGA configuration bitstream-based sequencing logic - reduces boot time by 12 ms and removes dependency on soft-core processors.
Telecom Line Card Power	Industrial PLC Controller
Use Scenario: Managing redundant 48 V DC-to-DC conversion chains feeding DSP, PHY, and interface ICs on a 10Gbps optical line card. IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL monitors primary/backup rails and sequences enable signals to isolated DC/DC modules with programmable blanking to accommodate slow-start converters. Use Value: Ensures fail-safe power handover between redundant supplies - maintains uptime during hot-swap events without software intervention.	Use Scenario: Coordinating 24 V field bus, 5 V logic, 3.3 V MCU, and 1.8 V ADC rails in an EN 61000-6-2 compliant programmable logic controller. IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL functions as the deterministic power supervisor, asserting PWRGD only after all rails pass UV checks - required for SIL2 functional safety certification. Use Value: Provides hardware-enforced sequencing traceability for IEC 61508 audit - no firmware updates needed to modify timing behavior.

Server Power Management

FPGA/ASIC Core Sequencing

Use Scenario: Sequencing 12 V, 5 V, 3.3 V, and 1.2 V rails on a dual-socket server motherboard during cold boot and graceful shutdown.

IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL acts as the hardware-based sequencing supervisor, enforcing strict voltage ramp order and detecting undervoltage faults before enabling CPU or memory subsystems.

Use Value: Prevents latch-up and inrush current damage by ensuring core voltages stabilize before I/O rails activate - validated per Intel VRD13 and AMD SVI2 specifications.

Use Scenario: Controlling power-up/down of auxiliary, I/O, and core rails for Xilinx Kintex Ultrascale+ FPGA in a reconfigurable radio platform.

IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL serves as the autonomous sequencing engine, using capacitor-tuned delays to meet FPGA vendor-specified tVDDIO > tVCCINT > tVCCAUX timing requirements.

Use Value: Eliminates need for FPGA configuration bitstream-based sequencing logic - reduces boot time by 12 ms and removes dependency on soft-core processors.

Telecom Line Card Power

Industrial PLC Controller

Use Scenario: Managing redundant 48 V DC-to-DC conversion chains feeding DSP, PHY, and interface ICs on a 10Gbps optical line card.

IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL monitors primary/backup rails and sequences enable signals to isolated DC/DC modules with programmable blanking to accommodate slow-start converters.

Use Value: Ensures fail-safe power handover between redundant supplies - maintains uptime during hot-swap events without software intervention.

Use Scenario: Coordinating 24 V field bus, 5 V logic, 3.3 V MCU, and 1.8 V ADC rails in an EN 61000-6-2 compliant programmable logic controller.

IC Role / Device Role / Timing Role: ADM1186-2ARQZ-REEL functions as the deterministic power supervisor, asserting PWRGD only after all rails pass UV checks - required for SIL2 functional safety certification.

Use Value: Provides hardware-enforced sequencing traceability for IEC 61508 audit - no firmware updates needed to modify timing behavior.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage sequencing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADM1186-1ARQZ-REEL	Includes SEQ_DONE and bidirectional FAULT pins; uses separate UP/DOWN inputs; 20-lead QSOP package.	Required for cascaded multi-device sequencing or fault propagation across boards; supports more complex state feedback loops.	Select when system requires fault chaining or explicit sequence completion signaling - not drop-in compatible due to pin count and function differences.
TPS65023RSBR	Integrated PMIC with three buck converters + two LDOs; fixed internal sequencing; no capacitor-programmable delays.	Best suited for compact, cost-sensitive designs where rail count and integration outweigh flexibility needs.	Choose only if power conversion and sequencing must be combined in one IC - lacks the ADM1186-2ARQZ-REEL's precision timing control and external rail monitoring capability.

Compared with ADM1186-1ARQZ-REEL, ADM1186-2ARQZ-REEL trades SEQ_DONE/FAULT functionality for smaller footprint and simplified control; versus TPS65023RSBR, it offers superior timing programmability and external rail supervision but requires external regulators.

Availability

ADM1186-2ARQZ-REEL is available at Aetrix Electronics and suitable for server motherboard design, FPGA power management, telecom line card development, and industrial PLC controller production requiring stable component supply and long-term lifecycle support.

Supply support for ADM1186-2ARQZ-REEL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The ADM1186 product line delivers hardware-based power supply sequencing and monitoring for complex multi-rail systems - designed specifically to replace FPGA- or microcontroller-driven sequencing with deterministic, low-latency, and failure-resistant analog control.

FAQ

What is the primary function of the ADM1186-2ARQZ-REEL in a power system?

The ADM1186-2ARQZ-REEL serves as a hardware-based quad-channel voltage sequencer and monitor. It controls the precise timing and order of power supply turn-on and turn-off across four independent rails using capacitor-programmed delays, while continuously verifying undervoltage conditions via four 0.8% accurate comparators. Its UP/DOWN pin enables bidirectional sequencing without external logic, making ADM1186-2ARQZ-REEL ideal for FPGA, server, and telecom applications demanding deterministic, firmware-free power control.

How does the ADM1186-2ARQZ-REEL differ from the ADM1186-1ARQZ-REEL?

The ADM1186-2ARQZ-REEL uses a single UP/DOWN pin for bidirectional sequencing control and omits the SEQ_DONE and FAULT pins found on the ADM1186-1ARQZ-REEL. It is packaged in a 16-lead QSOP versus the 20-lead QSOP of the ADM1186-1ARQZ-REEL. These differences reduce pin count and board area but remove cascading capability and external fault signaling - meaning ADM1186-2ARQZ-REEL is optimized for standalone, space-constrained sequencing rather than multi-device coordinated systems.

Can the ADM1186-2ARQZ-REEL be used with non-5 V or non-3.3 V supply rails?

Yes - the ADM1186-2ARQZ-REEL monitors any voltage rail via external resistor dividers connected to VIN1–VIN4. Since its internal comparator reference is fixed at 0.6 V, the resistor ratio determines the undervoltage threshold (e.g., 7.4 kΩ/2.5 kΩ sets a 2.375 V trip point). This allows seamless adaptation to 1.2 V, 1.8 V, 2.5 V, 5 V, 12 V, or even negative rails (with level-shifting), provided input voltages stay within the −0.3 V to +6 V absolute maximum rating. The ADM1186-2ARQZ-REEL thus supports heterogeneous rail architectures without redesign.

What timing accuracy can be expected from the capacitor-programmed delays on the ADM1186-2ARQZ-REEL?

The ADM1186-2ARQZ-REEL achieves ±5% time delay accuracy at 25°C for capacitors ranging from 10 nF to 2.2 µF, excluding external capacitor tolerance. This specification covers both blanking time (BLANK_DLY) and inter-output delays (DLY_EN_OUT1–DLY_EN_OUT4). At full temperature range (−40°C to +85°C), accuracy degrades to ±9% per the datasheet. Designers should select C0G/NP0 ceramic capacitors with ≤5% tolerance to maintain overall timing integrity - critical for meeting FPGA or ASIC power sequencing windows.

Does the ADM1186-2ARQZ-REEL require external components to operate?

Yes - the ADM1186-2ARQZ-REEL requires external components for full functionality: (1) resistor dividers on VIN1–VIN4 to scale rail voltages to the 0.6 V comparator threshold; (2) timing capacitors on BLANK_DLY and DLY_EN_OUT1–DLY_EN_OUT4 to set sequencing delays; and (3) pull-up resistors on open-drain outputs (OUT1–OUT4, PWRGD) to define logic-high voltage levels. No external clock or firmware is needed - all sequencing logic is self-contained. These passive components make ADM1186-2ARQZ-REEL a truly plug-and-play hardware sequencer.

ADM1186-2ARQZ-REEL Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-SSOP (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Sequencer

Number of Voltages Monitored:: 4

Voltage - Threshold:: Adjustable/Selectable

Output:: Open Drain or Open Collector

Reset:: Active High

Reset Timeout:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QSOP

ADM1186-2ARQZ-REEL FAQ

1.How can I place an order for ADM1186-2ARQZ-REEL through Aetrix?

Please submit a Request for Quotation (RFQ) for ADM1186-2ARQZ-REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ADM1186-2ARQZ-REEL reliable?

The price and inventory of ADM1186-2ARQZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1186-2ARQZ-REEL is usually 5 days.

3.What payment methods are accepted for ADM1186-2ARQZ-REEL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1186-2ARQZ-REEL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADM1186-2ARQZ-REEL?

ADM1186-2ARQZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADM1186-2ARQZ-REEL order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ADM1186-2ARQZ-REEL?

For technical support, including ADM1186-2ARQZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1186-2ARQZ-REEL requirements.

6.How does Aetrix verify that ADM1186-2ARQZ-REEL is sourced from the original manufacturer or authorized distributors?

All ADM1186-2ARQZ-REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADM1186-2ARQZ-REEL meets industry standards.

7.What is the process for return or replacement of ADM1186-2ARQZ-REEL?

All ADM1186-2ARQZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1186-2ARQZ-REEL, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ADM1186-2ARQZ-REEL part is unused and in its original packaging.

Return procedure for ADM1186-2ARQZ-REEL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…