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

Analog Devices Inc. ADM1815-5AKS-REEL

Name: ADM1815-5AKS-REEL
Brand: Analog Devices Inc.
SKU: ADM1815-5AKS-REEL
Price: 2.40 USD
Availability: InStock
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Part No.:: ADM1815-5AKS-REEL

Manufacturer:: Analog Devices Inc.

Category:: Supervisors

Package:: SC-70, SOT-323

Datasheet:: ADM1815-5AKS-REEL.pdf

Description:: IC SUPERVISOR 1 CHANNEL SC70-3

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Product details

Overview

ADM1815-5AKS-REEL from Analog Devices is a precision active-low microprocessor reset circuit in SC70-3 package, monitoring 3.06 V (typical) supply voltage with 150 ms reset timeout, ±1.5% trip accuracy over −40°C to +105°C, and 9–16 µA quiescent current - used for safe power-on initialization in embedded controllers and industrial microprocessor systems.

For engineers reviewing the ADM1815-5AKS-REEL datasheet, ADM1815-5AKS-REEL pinout, ADM1815-5AKS-REEL application, or ADM1815-5AKS-REEL equivalent, this page delivers verified specifications, functional context, real-world use cases, and validated alternative options for reliable system-level reset design.

Technical Context

The ADM1815-5AKS-REEL implements a precision bandgap-based voltage comparator with internal hysteresis and a fixed 150 ms power-up reset delay timer. Its active-low push-pull output drives microprocessor RESET inputs directly without external pull-up components.

It operates across 1.2 V to 5.5 V supply range, features guaranteed reset assertion during power-down (falling edge detection), and maintains reset state for ≥150 ms after VCC rises above 3.06 V threshold - ensuring stable power rail establishment before system boot.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	3.06 V typical (2.98–3.15 V min/max); monitors 3.3 V supply rails with margin for ripple and tolerance.
Reset Timeout	150 ms typical (100–250 ms); guarantees safe microprocessor initialization window after power stabilization.
Supply Range	1.2 V to 5.5 V; supports operation down to low-voltage logic while monitoring higher rails via internal scaling.
Quiescent Current	9–16 µA at 5.5 V; enables ultra-low-power system supervision in battery-backed or energy-sensitive designs.
Output Type	Active-low push-pull; drives RESET pins directly with 350 µA source / 8 mA sink capability - no external resistor needed.
Temperature Range	−40°C to +105°C; qualified for industrial and automotive under-hood environments.
Package	SC70-3 (KS-3); 2.0 mm × 2.1 mm footprint, 0.95 mm height - space-constrained PCBs and portable electronics.

Pinout & Package

ADM1815-5AKS-REEL uses a 3-lead SC70 (KS-3) package with gull-wing leads, JEDEC-compliant outline, and 0.65 mm lead pitch. Thermal impedance θ_JA = 146°C/W.

Pin	Circuit Role	Design Meaning
1	RST	Active-low reset output; held low while VCC < 3.06 V and for ≥150 ms after VCC exceeds threshold.
2	VCC	Supply input and monitored voltage rail; device draws current from this node and compares it internally.
3	GND	0 V reference for comparator, timer, and output stage; must be low-impedance connection to system ground plane.

Key Features

Feature	Design Value
Precision reset threshold	±1.5% tolerance over full temperature range ensures consistent trip point across operating conditions.
Guaranteed power-up reset	150 ms minimum timeout prevents premature release of RESET signal before power rail settles.
Low supply current	≤16 µA max at 5.5 V enables integration into always-on supervisory circuits without significant battery drain.
Direct microprocessor interface	Push-pull output eliminates need for external pull-up resistors - simplifies BOM and layout.
Industrial temperature grade	−40°C to +105°C operation supports deployment in harsh environments including motor controls and factory automation.

Applications

Industrial PLC Controller	Medical Diagnostic Handheld
Use Scenario: Power cycling during field firmware updates in programmable logic controllers. IC Role / Device Role / Timing Role: Active-low reset supervisor ensuring CPU remains held in reset until 3.3 V supply stabilizes post-power-on. Use Value: Prevents corrupted register states or partial instruction execution during brown-out recovery.	Use Scenario: Battery-powered portable ultrasound unit requiring deterministic boot sequence after sleep mode wake-up. IC Role / Device Role / Timing Role: Monitors main 3.3 V LDO output and asserts RESET for 150 ms to guarantee clean SoC initialization. Use Value: Eliminates need for software-initiated watchdog reset, reducing boot latency and firmware complexity.
Automotive Body Control Module	Smart Energy Meter
Use Scenario: Cold-cranking event where 12 V battery dips below regulator input, causing 3.3 V rail collapse and recovery. IC Role / Device Role / Timing Role: Detects falling VCC below 3.06 V and holds RESET asserted until rail recovers and sustains for ≥150 ms. Use Value: Avoids erratic CAN communication or EEPROM write corruption during transient undervoltage events.	Use Scenario: Mains-powered meter with backup supercapacitor maintaining RTC and memory during grid outage. IC Role / Device Role / Timing Role: Supervises 3.3 V backup supply and triggers controlled shutdown/reset when capacitor voltage decays below 3.06 V. Use Value: Enables graceful data save and nonvolatile flag setting before power loss-induced reset.

Industrial PLC Controller

Medical Diagnostic Handheld

Use Scenario: Power cycling during field firmware updates in programmable logic controllers.

IC Role / Device Role / Timing Role: Active-low reset supervisor ensuring CPU remains held in reset until 3.3 V supply stabilizes post-power-on.

Use Value: Prevents corrupted register states or partial instruction execution during brown-out recovery.

Use Scenario: Battery-powered portable ultrasound unit requiring deterministic boot sequence after sleep mode wake-up.

IC Role / Device Role / Timing Role: Monitors main 3.3 V LDO output and asserts RESET for 150 ms to guarantee clean SoC initialization.

Use Value: Eliminates need for software-initiated watchdog reset, reducing boot latency and firmware complexity.

Automotive Body Control Module

Smart Energy Meter

Use Scenario: Cold-cranking event where 12 V battery dips below regulator input, causing 3.3 V rail collapse and recovery.

IC Role / Device Role / Timing Role: Detects falling VCC below 3.06 V and holds RESET asserted until rail recovers and sustains for ≥150 ms.

Use Value: Avoids erratic CAN communication or EEPROM write corruption during transient undervoltage events.

Use Scenario: Mains-powered meter with backup supercapacitor maintaining RTC and memory during grid outage.

IC Role / Device Role / Timing Role: Supervises 3.3 V backup supply and triggers controlled shutdown/reset when capacitor voltage decays below 3.06 V.

Use Value: Enables graceful data save and nonvolatile flag setting before power loss-induced reset.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX809SEUR+T	3.08 V reset threshold, SOT-23-3 package, 14 µA typical I_CC, same −40°C to +105°C rating.	No SC70 option; larger SOT-23 footprint may impact high-density layouts.	Select when board space allows SOT-23 and legacy MAXIM sourcing is preferred.
TPS3808G30DBVR	3.0 V threshold (±0.5%), 1.8–6.0 V supply range, 2.5 µA I_CC, but requires external pull-up for open-drain output.	Open-drain output necessitates external resistor; less direct interface than ADM1815-5AKS-REEL's push-pull.	Choose for ultra-low-power systems where 2.5 µA I_CC outweighs added component count.

Compared with MAX809SEUR+T and TPS3808G30DBVR, ADM1815-5AKS-REEL offers SC70 footprint advantage, guaranteed push-pull drive, and tighter trip tolerance (±1.5% vs ±2.5% for MAX809), making it optimal for space-constrained industrial controllers demanding robust reset timing.

Availability

ADM1815-5AKS-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, medical handheld diagnostics, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADM1815-5AKS-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.

The ADM181x series was designed specifically for cost-sensitive, space-constrained microprocessor reset supervision - delivering precision voltage monitoring, fixed reset timing, and robust operation in harsh environments without external components.

FAQ

What is the exact reset threshold voltage of ADM1815-5AKS-REEL?

The ADM1815-5AKS-REEL has a nominal reset threshold of 3.06 V, with guaranteed minimum and maximum values of 2.98 V and 3.15 V respectively across −40°C to +105°C. This value is factory-trimmed and specified in Table 1 of the Rev. F datasheet, making ADM1815-5AKS-REEL suitable for monitoring 3.3 V supplies with adequate noise margin.

Does ADM1815-5AKS-REEL require an external pull-up resistor on its RST pin?

No, ADM1815-5AKS-REEL does not require an external pull-up resistor. It features an active-low push-pull output stage capable of sourcing 350 µA and sinking 8 mA, enabling direct connection to microprocessor RESET inputs - a key differentiator from open-drain reset supervisors like ADM1816 or TPS3808.

What package type and dimensions does ADM1815-5AKS-REEL use?

ADM1815-5AKS-REEL uses the SC70-3 (KS-3) package: 2.0 mm × 2.1 mm body size, 0.95 mm maximum height, 0.65 mm lead pitch, and gull-wing leads. Its JEDEC-compliant outline (per Figure 16, Page 8) ensures compatibility with standard reflow profiles and automated assembly.

Can ADM1815-5AKS-REEL monitor voltages other than 3.3 V?

Yes - while optimized for 3.3 V rails via its 3.06 V threshold, ADM1815-5AKS-REEL can supervise any supply between 1.2 V and 5.5 V. Its internal comparator operates independently of VCC level, and the 3.06 V trip point remains valid regardless of whether VCC is 2.5 V or 5 V, provided the monitored rail equals VCC.

How does the reset timeout behave during power-down versus power-up events?

During power-up, ADM1815-5AKS-REEL asserts RESET for ≥150 ms after VCC exceeds 3.06 V. During power-down, RESET is asserted within 10 µs of VCC falling below the threshold - ensuring immediate fault response while guaranteeing sustained reset hold time on startup per Figure 10 in the datasheet.

ADM1815-5AKS-REEL Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 3.06V

Output:: Push-Pull, Totem Pole

Reset:: Active Low

Reset Timeout:: 100ms Minimum

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-3

ADM1815-5AKS-REEL FAQ

1.How can I place an order for ADM1815-5AKS-REEL through Aetrix?

Please submit a Request for Quotation (RFQ) for ADM1815-5AKS-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 ADM1815-5AKS-REEL reliable?

The price and inventory of ADM1815-5AKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-5AKS-REEL is usually 5 days.

3.What payment methods are accepted for ADM1815-5AKS-REEL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-5AKS-REEL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADM1815-5AKS-REEL?

ADM1815-5AKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADM1815-5AKS-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 ADM1815-5AKS-REEL?

For technical support, including ADM1815-5AKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-5AKS-REEL requirements.

6.How does Aetrix verify that ADM1815-5AKS-REEL is sourced from the original manufacturer or authorized distributors?

All ADM1815-5AKS-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 ADM1815-5AKS-REEL meets industry standards.

7.What is the process for return or replacement of ADM1815-5AKS-REEL?

All ADM1815-5AKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-5AKS-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 ADM1815-5AKS-REEL part is unused and in its original packaging.

Return procedure for ADM1815-5AKS-REEL:

1.Submit a request within 90 days.

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

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