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Diodes Incorporated AZ810NSTR-G1
- Part No.:
- AZ810NSTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ810NSTR-G1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,425
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Product details
Overview
AZ810NSTR-G1 from BCD Semiconductor Manufacturing Limited is a 3-pin active-high microprocessor reset supervisor IC designed to monitor VCC supply voltage (3.0V/3.3V/5.0V) and assert RESET when voltage drops below factory-trimmed threshold (e.g., 3.08V for T variant), with 240ms typical timeout after recovery. It draws only 8μA at 3.3V, operates from −40°C to +105°C, and is housed in SOT-23 for embedded power monitoring.
For engineers reviewing the AZ810NSTR-G1 datasheet, AZ810NSTR-G1 pinout, AZ810NSTR-G1 application, or AZ810NSTR-G1 equivalent, key selection criteria include reset polarity (active-high), threshold voltage option (T = 3.08V), guaranteed 140ms minimum reset pulse width, SOT-23 footprint compatibility, and ultra-low quiescent current for battery-sensitive systems.
Technical Context
The AZ810 implements a precision bandgap reference and comparator-based voltage detection circuit that triggers reset assertion when VCC falls below the selected threshold (e.g., 3.08V ±3% over temperature). A built-in timer ensures the RESET signal remains asserted for ≥140ms after VCC recovers above threshold.
No external components are required; internal oscillator and logic generate fixed-duration reset pulses independent of system clock. The device supports full industrial temperature range (−40°C to +105°C) and tolerates VCC slew rates up to 100 V/μs without false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Polarity | Active-high output - asserts logic HIGH during fault condition, compatible with MCU reset inputs requiring high-level assertion. |
| Detect Voltage (T variant) | 3.08V nominal (±3% over −40°C to +85°C) - precisely monitors 3.3V supply rails with margin for brown-out detection. |
| Reset Timeout | 240ms typical, 140ms min - ensures sufficient hold time for CPU initialization and peripheral stabilization after power recovery. |
| Supply Current | 8μA typical at 3.3V/25°C - enables multi-year operation in coin-cell–powered IoT sensors and portable instrumentation. |
| Operating Temp Range | −40°C to +105°C - qualified for under-hood automotive modules, industrial PLCs, and outdoor wireless base stations. |
| VCC Range | 1.2V to 5.5V - supports wide-input designs including Li-ion–fed systems and legacy 5V logic domains. |
Pinout & Package
Supplied in SOT-23 package (2.9mm × 1.6mm × 1.1mm), surface-mount, lead-free (G1), green-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output driver; must be low-impedance connection to system ground plane. |
| 2 | RESET | Active-high open-drain output; requires external pull-up to VCC or logic rail; sinks ≤1.2mA during assertion. |
| 3 | VCC | Power input pin; supplies internal reference, comparator, and timer; accepts 1.2V–5.5V with <100 V/μs dV/dt tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage threshold | Factory-trimmed 3.08V (T) with ±3% tolerance over −40°C to +85°C - eliminates need for external resistor divider calibration. |
| Fixed reset timeout | 240ms typical delay ensures reliable CPU boot sequencing without software or external RC timing components. |
| Ultra-low quiescent current | 8μA at 3.3V enables direct connection to always-on battery rails without measurable drain impact. |
| Full-temperature specification | Guaranteed performance across −40°C to +105°C - suitable for unheated enclosures in industrial and automotive environments. |
Applications
| Embedded Controllers | Battery Operated Systems |
|---|---|
Use Scenario: Microcontroller-based HVAC controller powered by 3.3V LDO with intermittent mains loss. IC Role / Device Role / Timing Role: Monitors 3.3V rail and forces hardware reset if voltage dips below 3.08V during brown-out, holding reset for 240ms after recovery. Use Value: Prevents corrupted firmware execution and EEPROM writes during unstable power transitions. | Use Scenario: Portable gas detector using CR2032 coin cell and ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting on VCC drop below 3.08V; enables safe shutdown and cold-start recovery. Use Value: 8μA supply current extends battery life beyond 5 years in sleep mode while ensuring deterministic boot on wake-up. |
| Intelligent Instruments | Wireless Communication Systems |
Use Scenario: Handheld multimeter with auto-ranging analog front-end and LCD display. IC Role / Device Role / Timing Role: Provides clean power-on reset and brown-out protection for ADC reference and digital core. Use Value: Eliminates measurement glitches caused by marginal supply conditions during battery depletion. | Use Scenario: LoRaWAN node operating in remote field locations with solar-charged LiFePO₄ battery. IC Role / Device Role / Timing Role: Supervises 3.3V system rail and guarantees MCU reset during solar panel shading events. Use Value: Ensures radio stack reinitialization and network rejoin after transient undervoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX810LUR+T | 3.08V threshold, active-high, SOT-23, but 20μA ICC at 3.3V vs. AZ810's 8μA | Higher supply current reduces battery lifetime in ultra-low-power designs | Select MAX810LUR+T only if legacy design validation or second-source requirement mandates Maxim branding |
| TPS3808G30DBVR | 3.0V threshold, active-high, SOT-23, 1.6μA ICC, but 200ms min timeout vs. AZ810's 140ms min | Tighter threshold tolerance (±0.5%) but longer minimum timeout may delay system recovery | Prefer TPS3808G30DBVR for precision-critical applications where 1.6μA current justifies longer reset hold |
Compared with MAX810LUR+T and TPS3808G30DBVR, the AZ810NSTR-G1 offers best-in-class balance of ultra-low current (8μA), industry-standard 3.08V threshold, and robust 140ms minimum reset duration - ideal for cost-sensitive, battery-constrained embedded controllers where long-term reliability outweighs sub-1% threshold accuracy.
Availability
AZ810NSTR-G1 is available at Aetrix Electronics and suitable for embedded controllers, battery-operated systems, and intelligent instruments requiring stable component supply with RoHS-compliant, green-packaged SOT-23 delivery.
Supply support for AZ810NSTR-G1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based fabless analog IC designer specializing in power management, protection, and supervisory solutions for industrial, automotive, and consumer markets.
The AZ809/AZ810 series targets cost-effective, low-power microprocessor reset supervision - optimized for space-constrained, battery-sensitive applications needing precise voltage monitoring without external components.
FAQ
What is the exact reset threshold voltage for AZ810NSTR-G1?
The AZ810NSTR-G1 uses the "T" detect voltage option, specifying a nominal 3.08V threshold with ±3% tolerance over −40°C to +85°C and ±4.5% over −40°C to +105°C. This is factory-trimmed and does not require external calibration.
Can AZ810NSTR-G1 replace MAX810 in existing designs?
Yes - AZ810NSTR-G1 is pin-compatible with MAX810LUR+T (3.08V, active-high, SOT-23), shares identical pinout (VCC, GND, RESET), and meets or exceeds key specs: lower supply current (8μA vs. 20μA), same 240ms typical timeout, and broader temperature range (−40°C to +105°C).
Does AZ810NSTR-G1 require an external pull-up resistor on RESET?
Yes - the RESET pin is open-drain. An external pull-up resistor (typically 10kΩ to VCC or logic rail) is mandatory to establish valid HIGH level during normal operation and ensure proper reset deassertion timing per the 240ms timeout.
Is AZ810NSTR-G1 qualified for automotive applications?
No - while it operates from −40°C to +105°C, AZ810NSTR-G1 is not AEC-Q100 qualified. It is intended for industrial and commercial applications. For automotive use, consider AEC-Q100–qualified alternatives like TPS3808G30QDBVRQ1.
AZ810NSTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AZ810NSTR-G1 FAQ
1.How can I place an order for AZ810NSTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ810NSTR-G1 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 AZ810NSTR-G1 reliable?
The price and inventory of AZ810NSTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ810NSTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ810NSTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ810NSTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ810NSTR-G1?
AZ810NSTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ810NSTR-G1 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 AZ810NSTR-G1?
For technical support, including AZ810NSTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ810NSTR-G1 requirements.
6.How does Aetrix verify that AZ810NSTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ810NSTR-G1 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 AZ810NSTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ810NSTR-G1?
All AZ810NSTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ810NSTR-G1, 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 AZ810NSTR-G1 part is unused and in its original packaging.
Return procedure for AZ810NSTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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