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Diodes Incorporated AZ809ANRTR-G1
- Part No.:
- AZ809ANRTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ809ANRTR-G1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,716
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Product details
Overview
AZ809ANRTR-G1 from BCD Semiconductor Manufacturing Limited is a precision 3-pin microprocessor reset circuit with active-low push-pull RESET output, fixed 2.63V reset threshold (±0.04V over -40°C to +105°C), 240ms typical reset timeout, and guaranteed operation down to VCC = 1.0V. It monitors 3.0V/3.3V/5.0V supplies in embedded controllers and battery-powered systems without external components.
For engineers reviewing the AZ809ANRTR-G1 datasheet, AZ809ANRTR-G1 pinout, AZ809ANRTR-G1 application, or AZ809ANRTR-G1 equivalent, key selection criteria include reset threshold accuracy, transient immunity (≤20µs at 100mV overdrive), low quiescent current (6µA @ 3.3V), SOT-23 package compatibility, and industrial temperature support (-40°C to +105°C).
Technical Context
The AZ809ANRTR-G1 implements a precision bandgap-based voltage reference and comparator with integrated 240ms timeout timer, asserting RESET when VCC drops below 2.63V and holding it for ≥140ms after recovery. Its internal oscillator ensures consistent timing across temperature and supply variations.
Designed for high-noise environments, it rejects fast negative-going transients on VCC-e.g., a 100mV undershoot lasting ≤20µs does not trigger reset-and maintains valid logic state down to 1.0V VCC, enabling reliable brownout detection in low-power wake-up sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±0.04V (R-grade); enables precise 3.0V system supervision with 2.50–2.76V range over full temperature. |
| Reset Timeout | 240ms typical (140ms min); ensures sufficient processor initialization time after power recovery. |
| Supply Current | 6µA typical @ 3.3V, -40°C to +85°C; supports ultra-low-power battery operation in portable devices. |
| VCC Operating Range | 1.0V to 5.5V; guarantees RESET validity during deep brownout and allows use with wide-input LDOs. |
| Transient Immunity | Rejects ≤20µs VCC glitches at 100mV overdrive; prevents false resets in noisy automotive or industrial power rails. |
| Output Type | Push-pull active-low; eliminates need for external pull-up resistor and ensures fast, deterministic logic transitions. |
| Temperature Range | -40°C to +105°C; qualified for under-hood automotive, industrial control, and outdoor wireless equipment. |
Pinout & Package
The AZ809ANRTR-G1 is housed in a standard SOT-23 (3-pin) surface-mount package measuring 2.9mm × 1.3mm × 1.0mm, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Provides return path for internal bias and output sink current; must be connected to system ground plane for noise immunity. |
| 2 (RESET) | Active-low push-pull output | Drives CMOS input LOW during fault; sinks ≥1.2mA at VCC=2.59V; no external pull-up required. |
| 3 (VCC) | Power supply input | Accepts 1.0–5.5V; powers internal reference, comparator, and timer; bypass capacitor (0.1µF) recommended adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 2.63V with ±30 ppm/°C tempco ensures <±0.1V drift over full -40°C to +105°C range. |
| No external components | Integrated reference, comparator, timer, and push-pull driver eliminate BOM cost and layout complexity. |
| Low-voltage reset validity | RESET remains functional down to VCC = 1.0V, enabling robust power-fail detection before complete shutdown. |
| Fast transient rejection | Immune to VCC glitches ≤20µs duration at 100mV undershoot-critical for switching regulator noise environments. |
| Green RoHS-compliant packaging | "G1" suffix denotes halogen-free, lead-free SOT-23 package meeting JEDEC J-STD-020 reflow standards. |
Applications
| Microprocessor Power Sequencing | Portable Medical Devices |
|---|---|
|
Use Scenario: Ensuring clean boot of ARM Cortex-M4 MCU after Li-ion battery voltage sag during cold start. IC Role / Device Role / Timing Role: Monitors 3.0V LDO output and asserts RESET until stable >2.63V for ≥240ms. Use Value: Prevents firmware corruption by guaranteeing minimum reset hold time even at 1.2V VCC during brownout recovery. |
Use Scenario: Maintaining safe shutdown in handheld glucose meter during battery depletion. IC Role / Device Role / Timing Role: Detects 3.0V rail collapse and holds microcontroller in reset while analog front-end powers down gracefully. Use Value: Enables deterministic low-power state entry with 6µA quiescent current, extending usable battery life by >12%. |
| Automotive Body Control Module | Industrial IoT Gateway |
|
Use Scenario: Supervising 5V CAN transceiver supply in vehicle door module exposed to load-dump transients. IC Role / Device Role / Timing Role: Rejects ≤20µs negative spikes on VCC line while asserting RESET if sustained drop below 2.63V occurs. Use Value: Eliminates spurious resets during alternator switching noise, improving ASIL-B system reliability. |
Use Scenario: Reset coordination across dual-core SoC and Ethernet PHY in edge gateway operating at -40°C ambient. IC Role / Device Role / Timing Role: Provides synchronized reset pulse to both domains using single 2.63V threshold with -40°C to +105°C specification. Use Value: Reduces component count vs. dual-supply supervisors and ensures timing coherency across heterogeneous subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 2.63V threshold, but 140ms min timeout (vs. 240ms typ), higher ICC (15µA), SOT-23-3 package. | Lacks guaranteed 240ms hold time; less suitable for processors requiring extended reset assertion. | Select only if tighter timeout tolerance is acceptable and lower cost outweighs timing margin loss. |
| TPS3808G12DBVR | Adjustable threshold (via external resistor), 200ms min timeout, 1.6µA ICC, same SOT-23-3 footprint. | Requires external resistor network; adds BOM cost and layout area; better for multi-rail designs. | Prefer when system requires programmable reset voltage or ultra-low current dominates design priority. |
Compared with MAX809TRD3-T and TPS3808G12DBVR, the AZ809ANRTR-G1 delivers superior timing consistency (240ms typical vs. 140ms/200ms min), lower operating current than MAX809, and zero external components-making it optimal for cost-sensitive, space-constrained, and timing-critical 3.0V embedded systems.
Availability
AZ809ANRTR-G1 is available at Aetrix Electronics and suitable for microprocessor power sequencing, portable medical devices, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AZ809ANRTR-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 high-reliability power management and system supervision solutions for automotive, industrial, and consumer markets.
The AZ809A series was developed specifically for cost-effective, single-supply microprocessor reset supervision in space- and power-constrained applications-emphasizing precision threshold stability, transient immunity, and minimal external component count.
FAQ
What is the exact reset threshold voltage for AZ809ANRTR-G1?
The AZ809ANRTR-G1 has a nominal reset threshold of 2.63V, with a guaranteed range of 2.50V to 2.76V across the full operating temperature range (-40°C to +105°C). This R-grade variant is specifically calibrated for 3.0V system monitoring and exhibits ±30 ppm/°C temperature coefficient.
Does AZ809ANRTR-G1 require an external pull-up resistor on the RESET pin?
No. The AZ809ANRTR-G1 features a push-pull output stage that actively drives RESET LOW during fault and HIGH when released, eliminating the need for an external pull-up resistor. This reduces BOM count and improves rise/fall time predictability compared to open-drain alternatives.
Can AZ809ANRTR-G1 operate reliably at VCC = 1.1V?
Yes. The device guarantees valid RESET output behavior down to VCC = 1.0V, including correct logic state and sink capability (≥1.2mA at VCC ≥ 2.59V). Below 1.0V, the output enters high-impedance mode, so a 100kΩ pull-down is recommended only for sub-1.0V conditions.
How does AZ809ANRTR-G1 handle fast voltage transients on the VCC line?
The AZ809ANRTR-G1 rejects fast negative-going transients via internal filtering and comparator hysteresis. For example, a 100mV undershoot lasting ≤20µs will not trigger reset, as confirmed by Figure 10 in the datasheet. A 0.1µF ceramic capacitor placed near the VCC pin further enhances immunity to high-frequency noise.
AZ809ANRTR-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:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AZ809ANRTR-G1 FAQ
1.How can I place an order for AZ809ANRTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ809ANRTR-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 AZ809ANRTR-G1 reliable?
The price and inventory of AZ809ANRTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ809ANRTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ809ANRTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ809ANRTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ809ANRTR-G1?
AZ809ANRTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ809ANRTR-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 AZ809ANRTR-G1?
For technical support, including AZ809ANRTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ809ANRTR-G1 requirements.
6.How does Aetrix verify that AZ809ANRTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ809ANRTR-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 AZ809ANRTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ809ANRTR-G1?
All AZ809ANRTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ809ANRTR-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 AZ809ANRTR-G1 part is unused and in its original packaging.
Return procedure for AZ809ANRTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AZ809ANRTR-G1 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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