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Analog Devices Inc. ADM1812-5ART-REEL7
- Part No.:
- ADM1812-5ART-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1812-5ART-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,149
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Product details
Overview
ADM1812-5ART-REEL7 from Analog Devices is a 5 V microprocessor reset circuit with active-high push-pull output, 4.62 V typical reset threshold, 150 ms reset timeout, and operation across −40°C to +105°C. It ensures safe system initialization in embedded controllers and industrial microprocessor systems by holding reset until power stabilizes.
For engineers reviewing the ADM1812-5ART-REEL7 datasheet, ADM1812-5ART-REEL7 pinout, ADM1812-5ART-REEL7 application, or ADM1812-5ART-REEL7 equivalent, key selection criteria include reset polarity (active-high), SOT-23 package compatibility, 4.62 V trip point accuracy, and guaranteed 150 ms reset assertion time after power-up.
Technical Context
The ADM1812-5ART-REEL7 integrates a precision voltage reference, comparator, and 150 ms delay timer to generate a clean, glitch-free active-high reset signal when VCC rises above 4.62 V (typical). Its internal architecture avoids external RC timing components and supports direct connection to µP reset inputs.
It operates over 1.2 V to 5.5 V supply range with ultra-low quiescent current (9–16 µA), enabling use in battery-backed and low-power industrial systems. The device features ±1.5% reset threshold tolerance over temperature and guarantees reset assertion for ≥100 ms and ≤250 ms after VCC exceeds threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V typical (4.50–4.75 V min/max); precisely monitors 5 V supplies without external calibration. |
| Reset Output Polarity | Active-high push-pull; drives high during normal operation and pulls low only during reset - no external pull-up required. |
| Reset Timeout | 150 ms typical (100–250 ms min/max); ensures sufficient power stabilization before releasing microprocessor reset. |
| Supply Voltage Range | 1.2 V to 5.5 V; supports operation down to brown-out conditions while maintaining valid reset assertion. |
| Quiescent Current | 9–16 µA at 5.5 V; enables long-term monitoring in always-on subsystems with minimal power penalty. |
| Operating Temperature | −40°C to +105°C; qualified for industrial and automotive under-hood environments. |
| Package | SOT-23 (RT-3); 3-pin, surface-mount footprint compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
ADM1812-5ART-REEL7 is housed in a 3-lead SOT-23 (RT-3) package with gull-wing leads, JEDEC TO-236-AB compliant, 2.90 mm × 1.30 mm body size, and 0.95 mm height.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-high push-pull reset output; remains low for ≥100 ms after power-up until VCC exceeds 4.62 V, then stays high for ≥150 ms before release. |
| 2 | VCC | Supply input and monitored voltage rail; powers internal circuitry and serves as the reference for threshold detection. |
| 3 | GND | Ground reference for all internal functions and output stage; must be connected to system ground plane for stable reset timing. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 150 ms reset timeout | Ensures reliable power stabilization before microprocessor release - no external timing capacitor needed. |
| Active-high push-pull output | Eliminates need for external pull-up resistor; directly interfaces with µP reset pins requiring active-high assertion. |
| ±1.5% reset threshold accuracy | Maintains tight trip-point control across full temperature range, critical for robust 5 V supply margining. |
| Ultra-low supply current | 9–16 µA max enables use in energy-constrained applications such as remote sensors and backup power circuits. |
| SOT-23 footprint | Standardized 3-pin package supports high-volume automated placement and reflow, reducing BOM and assembly cost. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Power-on reset sequencing in programmable logic controllers exposed to wide ambient temperature swings and noisy 5 V rails. IC Role / Device Role / Timing Role: Monitors main 5 V supply and asserts active-high reset to ARM Cortex-M based controller until voltage settles within spec. Use Value: Prevents erratic boot behavior caused by premature release of reset during cold-start voltage ramp-up. |
Use Scenario: Reset supervision for microcontrollers managing door locks, lighting, and window controls in 12 V automotive systems with 5 V LDO-derived rails. IC Role / Device Role / Timing Role: Provides fail-safe reset initiation and 150 ms hold-off to accommodate LDO startup transients and battery voltage sag. Use Value: Eliminates need for discrete RC networks while meeting AEC-Q100 Grade 2 temperature requirements. |
| Medical Diagnostic Equipment | Network Edge Routers |
Use Scenario: Ensuring deterministic boot of FPGA-based imaging subsystems powered from isolated 5 V DC/DC converters. IC Role / Device Role / Timing Role: Generates synchronized reset pulse aligned to 5 V rail stability, feeding both FPGA and companion MCU. Use Value: Guarantees simultaneous release of multiple reset domains without skew or race conditions. |
Use Scenario: Supervising auxiliary 5 V management rails in multi-core network processors where firmware corruption must be prevented during power cycling. IC Role / Device Role / Timing Role: Active-high reset output directly connects to processor's POR# input, asserting reset on undervoltage and holding for 150 ms post-recovery. Use Value: Meets Telcordia GR-63-CORE reliability requirements for controlled restart after brief AC dropout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SUT+T | 4.63 V threshold, active-low open-drain output, 140 ms timeout, SC70-3 package | Requires external pull-up; incompatible with active-high reset inputs without level-shifting | Select only if system design already uses active-low reset architecture and SC70 layout is fixed. |
| TPS3808G01DBVR | 4.63 V threshold, active-high push-pull, 200 ms timeout, SOT-23-6 package with manual reset input | Larger footprint and extra pin; offers adjustable delay and watchdog capability not present in ADM1812-5ART-REEL7 | Choose when extended timeout or manual reset functionality is required - otherwise over-specified. |
Compared with MAX809SUT+T and TPS3808G01DBVR, the ADM1812-5ART-REEL7 delivers identical 5 V monitoring accuracy in the smallest possible SOT-23-3 footprint with native active-high drive - simplifying layout and eliminating external components in cost-sensitive industrial designs.
Availability
ADM1812-5ART-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical diagnostic equipment requiring stable component supply and guaranteed long-term availability.
Supply support for ADM1812-5ART-REEL7 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 since 1965.
The ADM181x series was designed specifically for reliable, low-cost power-supply monitoring in space-constrained microprocessor systems - prioritizing accuracy, temperature stability, and zero-component integration.
FAQ
What is the reset threshold voltage of the ADM1812-5ART-REEL7?
The ADM1812-5ART-REEL7 has a nominal reset threshold of 4.62 V, with a guaranteed range of 4.50 V to 4.75 V across −40°C to +105°C. This precise trip point is optimized for monitoring standard 5 V power rails and ensures reliable detection of undervoltage conditions without false triggering.
Does the ADM1812-5ART-REEL7 require an external pull-up resistor?
No - the ADM1812-5ART-REEL7 features an active-high push-pull output stage, meaning it actively drives both high and low states. Unlike open-drain reset ICs, it requires no external pull-up resistor and connects directly to microprocessor reset inputs expecting active-high assertion.
What is the reset timeout duration for the ADM1812-5ART-REEL7?
The ADM1812-5ART-REEL7 provides a guaranteed reset timeout of 100 ms to 250 ms, with a typical value of 150 ms. This delay begins when VCC rises above the threshold and ensures the power supply has fully stabilized before releasing the microprocessor from reset.
Which package does the ADM1812-5ART-REEL7 use?
The ADM1812-5ART-REEL7 is supplied in a 3-lead SOT-23 (RT-3) package, measuring 2.90 mm × 1.30 mm with gull-wing leads. This JEDEC-compliant footprint supports high-density PCB layouts and standard reflow soldering processes.
Is the ADM1812-5ART-REEL7 suitable for automotive applications?
Yes - the ADM1812-5ART-REEL7 is rated for operation from −40°C to +105°C and meets industrial temperature requirements. While not AEC-Q200 qualified out-of-box, its performance envelope supports use in non-safety-critical automotive body electronics when validated per customer qualification protocols.
ADM1812-5ART-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.62V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADM1812-5ART-REEL7 FAQ
1.How can I place an order for ADM1812-5ART-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1812-5ART-REEL7 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 ADM1812-5ART-REEL7 reliable?
The price and inventory of ADM1812-5ART-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1812-5ART-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM1812-5ART-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1812-5ART-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1812-5ART-REEL7?
ADM1812-5ART-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1812-5ART-REEL7 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 ADM1812-5ART-REEL7?
For technical support, including ADM1812-5ART-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1812-5ART-REEL7 requirements.
6.How does Aetrix verify that ADM1812-5ART-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM1812-5ART-REEL7 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 ADM1812-5ART-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM1812-5ART-REEL7?
All ADM1812-5ART-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1812-5ART-REEL7, 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 ADM1812-5ART-REEL7 part is unused and in its original packaging.
Return procedure for ADM1812-5ART-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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