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

Analog Devices Inc. AD5100YRQZ

Name: AD5100YRQZ
Brand: Analog Devices Inc.
SKU: AD5100YRQZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AD5100YRQZ

Manufacturer:: Analog Devices Inc.

Category:: Supervisors

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

Datasheet:: AD5100YRQZ.pdf

Description:: IC VOLT MONITOR 4CH 16QSOP

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Product details

Overview

AD5100YRQZ from Analog Devices is a factory-programmed system management IC providing quad voltage monitoring (two 30 V high-voltage inputs, two low-voltage inputs) and watchdog supervision with shutdown, reset, and fault detection outputs. It delivers programmable overvoltage/undervoltage thresholds, reset hold time, and watchdog timeout - all stored in one-time programmable EPROM - for automotive power sequencing and microprocessor protection.

For engineers reviewing the AD5100YRQZ datasheet, AD5100YRQZ pinout, AD5100YRQZ application, or AD5100YRQZ equivalent, this device supports critical design tasks including battery-supply monitoring in infotainment systems, early-warning shutdown control, rising-edge wake-up triggering, and robust reset generation under harsh temperature conditions (−40°C to +125°C).

Technical Context

The AD5100YRQZ integrates four independent monitoring channels: V1MON and V2MON support 30 V input ranges with shutdown and reset control; V3MON (2.32–4.97 V) and V4MON (1.67–7.96 V) provide low-voltage reset-only supervision. All thresholds and timing parameters - including t1SD_HOLD (0.07 ms to 200 ms), tRS_HOLD (0.1 ms to 200 ms), and tWD (100 ms to 2000 ms) - are factory-programmed into OTP memory and optionally overridden via I²C.

Its dual-supply architecture derives internal regulation from V1MON (6–30 V), while V2MON serves as both enable input and optional wake-up trigger. The device implements hysteresis (1.5% on V1MON/V2MON, 1.2–5% on V3MON/V4MON), glitch immunity (45–50 μs), and eMOST-compatible high-voltage pin shielding - enabling direct connection to automotive battery rails without external level-shifting.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	6.0 V to 30 V - powers device directly from automotive battery or main rail; no auxiliary supply needed.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive applications and industrial embedded systems.
V1MON Input Range	6 V to 28.29 V - monitors battery voltage with programmable OV/UV thresholds and 1.5% hysteresis.
V2MON Input Range	3 V to 24.75 V - enables system power-on via ignition signal or MOST wake-up; supports rising-edge triggered mode.
V3MON/V4MON Range	V3MON: 2.32 V–4.97 V; V4MON: 1.67 V–7.96 V - independently configurable low-voltage reset sources for MCU core/logic supplies.
I²C Interface	400 kHz standard-mode - allows dynamic override of OTP settings and real-time diagnostics during operation.
Shutdown Current	5 μA max - enables ultra-low-power sleep mode when V2MON = 0 V, critical for always-on automotive modules.

Pinout & Package

The AD5100YRQZ is housed in a compact 16-lead QSOP package (5.3 mm × 10.2 mm, 1.0 mm height) with exposed pad for thermal performance. High-voltage pins (V1MON, V2MON, V4MON) feature antimigration shielding per Analog Devices' recommended PCB layout (Figure 4).

Pin/Terminal	Circuit Role	Design Meaning
1 V1MON	Primary high-voltage monitoring input & internal supply source	Derives VREG; requires 10 μF electrolytic capacitor to GND; monitors battery rail for OV/UV faults.
2 GND	Analog/digital ground reference	Common return for all analog monitoring paths and digital I/O; must be low-impedance.
3 VOTP	OTP EPROM programming supply	Requires 10 μF low-ESR decoupling cap; powers one-time programmable memory array.
4 V3MON	Low-voltage monitoring input	Supplies reset logic for 2.32–4.97 V supplies (e.g., 3.3 V MCU core); no shutdown control.
5 MR	Manual reset input	Active-low, highest-priority reset trigger; internally pulled up to V3MON (37–82 kΩ).
6 WDI	Watchdog input	Accepts 0–5 V pulses; initiates reset/shutdown if timeout (100–2000 ms) expires without activity.
7 SCL	I²C clock input	Open-drain; requires external pull-up; minimum VIH = 2.0 V for reliable communication.
8 SDA	I²C data I/O	Open-drain bidirectional; supports read/write of configuration registers and OTP override.
9 RESET	Push-pull reset output	Rail-to-rail output referenced to V3MON; drives external processor reset pin directly.
10 V4OUT	Open-drain diagnostic output	Triggered by V4MON threshold crossing; usable for PWM-based battery state-of-charge indication.
11 SHDNWARN	Open-drain shutdown warning	Active-low alert issued before SHDN assertion; enables system-level graceful shutdown.
12 SHDN	Push-pull shutdown output	Drives external FET gate or PMIC enable; selectable rail (V1MON or VREG) up to 30 V.
13 AD0	I²C slave address bit	Configures LSB of 7-bit address; tied high = 0x4A, tied low = 0x49; max 3.3 V input.
14 V4MON	Secondary low-voltage monitoring input	Withstands up to 30 V; used for diagnostic circuits (e.g., eMOST) or dual-threshold monitoring.
15 GND/NC	Ground or no-connect	May be grounded or left floating; never connect to other potentials to avoid leakage paths.
16 V2MON	Secondary high-voltage input & power-enable	Triggers device wake-up; minimum 2.2 V required for VREG power-up; supports rising-edge mode.

Key Features

Feature	Design Value
Factory-programmed OTP memory	Stores all thresholds (OV/UV/on/off/reset) and timing values (hold/delay/watchdog) permanently; eliminates external configuration components.
Dual high-voltage monitoring with shutdown control	V1MON and V2MON each drive SHDN and RESET outputs - enabling layered power-down strategies for multi-rail systems.
Rising-edge triggered wake-up mode	V2MON detects edge transitions (not just level), allowing low-power sleep until ignition key turn or MOST bus activity.
eMOST-compatible high-voltage pinout	V1MON/V2MON/V4MON include antimigration shielding - permits direct connection to 30 V automotive media buses without external protection.
Integrated fault detection & warning	SHDNWARN provides early alert before full shutdown; FD register flags V1MON/V2MON/V3MON/V4MON faults for diagnostic logging.

Applications

Automotive Infotainment Power Management	Battery State-of-Charge Monitoring
Use Scenario: Monitoring 12 V car battery and 5 V infotainment SoC supply during engine start-stop cycles and accessory mode. IC Role / Device Role / Timing Role: AD5100YRQZ supervises V1MON (battery) for undervoltage cutoff and V3MON (5 V rail) for processor reset, with programmable tRS_HOLD ensuring clean boot after brownout recovery. Use Value: Prevents corrupted firmware execution by holding reset until stable 5 V is confirmed, while shutting down non-critical loads before battery drops below safe operating voltage.	Use Scenario: Estimating remaining charge in 12 V lead-acid battery using V1MON voltage decay profile and V4MON-triggered PWM on V4OUT. IC Role / Device Role / Timing Role: AD5100YRQZ uses V4MON to detect gradual voltage drop across calibrated resistive divider; V4OUT generates duty-cycle-modulated signal proportional to battery voltage. Use Value: Enables low-cost, analog-based battery health reporting without ADC or microcontroller intervention - reducing BOM cost and firmware complexity.
Industrial PLC Power Sequencing	Network Equipment Hot-Swap Control
Use Scenario: Ensuring correct power-up order of 24 V fieldbus, 5 V logic, and 3.3 V FPGA supplies in programmable logic controllers. IC Role / Device Role / Timing Role: AD5100YRQZ monitors V2MON (24 V enable) to activate V3MON (5 V) and V4MON (3.3 V) supervision only after primary rail stabilizes, enforcing strict sequencing. Use Value: Eliminates need for discrete RC timers or CPLD-based sequencers - simplifying design, improving reliability, and supporting wide temperature operation (−40°C to +125°C).	Use Scenario: Safely enabling/disabling hot-swap controllers in telecom line cards during insertion/removal, preventing inrush current and bus contention. IC Role / Device Role / Timing Role: AD5100YRQZ uses V1MON to sense backplane voltage presence and V2MON as enable signal; SHDN asserts only after t1SD_DELAY confirms stable input. Use Value: Guarantees controlled ramp-up of downstream DC/DC converters, avoiding voltage droop on shared backplane and meeting GR-1089 EMI requirements.

Automotive Infotainment Power Management

Battery State-of-Charge Monitoring

Use Scenario: Monitoring 12 V car battery and 5 V infotainment SoC supply during engine start-stop cycles and accessory mode.

IC Role / Device Role / Timing Role: AD5100YRQZ supervises V1MON (battery) for undervoltage cutoff and V3MON (5 V rail) for processor reset, with programmable tRS_HOLD ensuring clean boot after brownout recovery.

Use Value: Prevents corrupted firmware execution by holding reset until stable 5 V is confirmed, while shutting down non-critical loads before battery drops below safe operating voltage.

Use Scenario: Estimating remaining charge in 12 V lead-acid battery using V1MON voltage decay profile and V4MON-triggered PWM on V4OUT.

IC Role / Device Role / Timing Role: AD5100YRQZ uses V4MON to detect gradual voltage drop across calibrated resistive divider; V4OUT generates duty-cycle-modulated signal proportional to battery voltage.

Use Value: Enables low-cost, analog-based battery health reporting without ADC or microcontroller intervention - reducing BOM cost and firmware complexity.

Industrial PLC Power Sequencing

Network Equipment Hot-Swap Control

Use Scenario: Ensuring correct power-up order of 24 V fieldbus, 5 V logic, and 3.3 V FPGA supplies in programmable logic controllers.

IC Role / Device Role / Timing Role: AD5100YRQZ monitors V2MON (24 V enable) to activate V3MON (5 V) and V4MON (3.3 V) supervision only after primary rail stabilizes, enforcing strict sequencing.

Use Value: Eliminates need for discrete RC timers or CPLD-based sequencers - simplifying design, improving reliability, and supporting wide temperature operation (−40°C to +125°C).

Use Scenario: Safely enabling/disabling hot-swap controllers in telecom line cards during insertion/removal, preventing inrush current and bus contention.

IC Role / Device Role / Timing Role: AD5100YRQZ uses V1MON to sense backplane voltage presence and V2MON as enable signal; SHDN asserts only after t1SD_DELAY confirms stable input.

Use Value: Guarantees controlled ramp-up of downstream DC/DC converters, avoiding voltage droop on shared backplane and meeting GR-1089 EMI requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar system supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6816ESE+	Single-channel 30 V supervisor with fixed 2.5 V reset threshold; no I²C interface or OTP programming.	Lacks quad monitoring, watchdog, and programmability - suitable only for basic single-rail reset.	Select when cost sensitivity outweighs flexibility needs and system has only one critical supply to monitor.
TPS3808G33DBVR	Single 3.3 V supply supervisor with adjustable delay; 6 V max input; no high-voltage inputs or shutdown outputs.	Cannot monitor battery or 24 V rails directly; requires external level-shifting for automotive use.	Choose for low-voltage embedded systems where only core logic rail supervision is required and space is constrained.

Compared with MAX6816ESE+ and TPS3808G33DBVR, the AD5100YRQZ uniquely combines factory-programmable multi-rail monitoring, 30 V high-voltage capability, integrated shutdown control, and I²C configurability - making it the only solution capable of replacing discrete supervisors and sequencers in automotive and industrial power management subsystems.

Availability

AD5100YRQZ is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLCs, and telecom hot-swap systems requiring stable component supply across extended temperature and long product lifecycles.

Supply support for AD5100YRQZ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD5100YRQZ belongs to Analog Devices' automotive-qualified system management IC family, designed specifically for robust power supervision and fault response in harsh environments such as vehicle powertrain, body electronics, and ADAS domains.

FAQ

What is the primary function of the AD5100YRQZ in an automotive system?

The AD5100YRQZ serves as a factory-programmed quad-voltage supervisor that monitors battery (V1MON), ignition (V2MON), and low-voltage rails (V3MON/V4MON) to generate precise reset and shutdown signals. In automotive applications, it ensures safe power sequencing, prevents microprocessor corruption during cranking, and enables rising-edge wake-up from sleep - all within −40°C to +125°C operation. The AD5100YRQZ replaces multiple discrete supervisors with a single IC, reducing board area and validation effort.

Can the AD5100YRQZ be reprogrammed after manufacturing?

The AD5100YRQZ features one-time programmable (OTP) EPROM memory for permanent storage of thresholds and timing values, but supports temporary runtime override via its I²C interface. Engineers can dynamically adjust settings - such as reset hold time or watchdog timeout - during evaluation or field calibration without altering the factory-programmed defaults. However, the OTP contents themselves cannot be rewritten; only volatile register values are modifiable. This ensures production consistency while enabling design flexibility. The AD5100YRQZ retains all I²C-configurable behavior even after power cycle.

How does the AD5100YRQZ handle high-voltage inputs like 12 V or 24 V automotive batteries?

The AD5100YRQZ accepts up to 30 V on V1MON, V2MON, and V4MON pins with built-in high-voltage input protection and antimigration shielding, as specified in its recommended PCB layout. Its internal comparators operate directly from these rails without external level-shifting or resistor dividers. V1MON also powers the internal 30 V-tolerant VREG regulator, eliminating need for auxiliary supplies. Thresholds are factory-programmed with ±2% tolerance over temperature, and hysteresis (1.5%) prevents chatter during slow battery voltage transitions. This makes the AD5100YRQZ suitable for direct connection to automotive battery and ignition circuits.

What is the role of the SHDNWARN pin on the AD5100YRQZ?

The SHDNWARN pin on the AD5100YRQZ is an open-drain, active-low output that asserts before the main SHDN signal to provide early warning of impending system shutdown. It activates when a monitored input (e.g., V1MON undervoltage) breaches its threshold but before the programmed t1SD_HOLD or t1SD_DELAY expires. This gives host processors or power management controllers time to save state, flush buffers, or initiate graceful shutdown sequences. Unlike SHDN, SHDNWARN does not disable power - it serves purely as a diagnostic and coordination signal. The AD5100YRQZ guarantees this warning occurs consistently across temperature and voltage conditions per its fault detection timing specs.

Does the AD5100YRQZ support watchdog functionality, and how is it configured?

Yes, the AD5100YRQZ includes a fully configurable watchdog timer with timeout ranging from 100 ms to 2000 ms, factory-programmed into OTP and optionally overridden via I²C. The WDI pin accepts logic-level pulses; missing pulses beyond the timeout period trigger a reset (tWDR) or full shutdown (tWD_SHDN). Three modes are supported: standard (pulse-driven), advance (edge-sensitive), and floating (disabled). Watchdog behavior is independent of voltage monitoring - it can supervise software execution regardless of supply status. The AD5100YRQZ integrates WDI detection with the same fault detection logic used for V1MON/V2MON, ensuring consistent timing and glitch immunity (45 μs) across all supervision functions.

AD5100YRQZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Type:: System Manager

Number of Voltages Monitored:: 4

Voltage - Threshold:: Adjustable/Selectable

Output:: Push-Pull, Totem Pole

Reset:: Active Low

Reset Timeout:: 60µs Typical

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QSOP

AD5100YRQZ FAQ

1.How can I place an order for AD5100YRQZ through Aetrix?

Please submit a Request for Quotation (RFQ) for AD5100YRQZ 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 AD5100YRQZ reliable?

The price and inventory of AD5100YRQZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5100YRQZ is usually 5 days.

3.What payment methods are accepted for AD5100YRQZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5100YRQZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AD5100YRQZ?

AD5100YRQZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AD5100YRQZ 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 AD5100YRQZ?

For technical support, including AD5100YRQZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5100YRQZ requirements.

6.How does Aetrix verify that AD5100YRQZ is sourced from the original manufacturer or authorized distributors?

All AD5100YRQZ 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 AD5100YRQZ meets industry standards.

7.What is the process for return or replacement of AD5100YRQZ?

All AD5100YRQZ units undergo pre-shipment inspection (PSI). If there is an issue with AD5100YRQZ, 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 AD5100YRQZ part is unused and in its original packaging.

Return procedure for AD5100YRQZ:

1.Submit a request within 90 days.

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

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