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Diodes Incorporated AZ7027RTR-G1
- Part No.:
- AZ7027RTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-243AA
- Datasheet:
-
AZ7027RTR-G1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
AZ7027RTR-G1 from BCD Semiconductor Manufacturing Limited is a precision voltage detector IC with 2.7 V detection threshold, open-collector output, and built-in hysteresis (50 mV typical). It monitors supply rails in embedded systems to generate reliable reset signals during power-on, brownout, or transient drop events. Designed for CPU reset generation and low-battery detection in battery-powered appliances and industrial controllers.
For engineers reviewing the AZ7027RTR-G1 datasheet, AZ7027RTR-G1 pinout, AZ7027RTR-G1 application, or AZ7027RTR-G1 equivalent, key selection criteria include detect voltage accuracy (±0.15 V), minimum operating voltage (0.8 V), hysteresis stability, open-collector drive capability (16 mA at −40°C to +85°C), and SOT-89 thermal performance (θJC = 74°C/W).
Technical Context
The AZ7027RTR-G1 employs an on-chip precision voltage reference and comparator architecture to monitor VCC against a fixed 2.7 V threshold (VDET−). Detection triggers an active-low open-collector output after 10 µs propagation delay (tpHL) when VCC falls below threshold, and releases after 15 µs (tpLH) when VCC rises above VDET+ (2.75 V, due to 50 mV hysteresis).
It operates across −40°C to +85°C with supply voltage range up to 18 V, draws only 30 µA quiescent current (ICCH) at 5.25 V, and maintains valid output down to 0.8 V input (VOPR). The open-collector output requires external pull-up and supports sink currents up to 16 mA over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Voltage | 2.7 V ±0.15 V - precise brownout detection point for 3.3 V logic rails |
| Hysteresis Voltage | 50 mV typical - prevents false triggering near threshold under noisy supply conditions |
| Output Type | Open-collector - enables wired-OR reset buses and flexible pull-up voltage selection |
| Min Operating Voltage | 0.8 V typical - ensures valid reset assertion even during deep discharge or ultra-low-VCC transients |
| Quiescent Current | 30 µA typical at 5.25 V - enables multi-year battery life in always-on monitoring applications |
| Propagation Delay | 10 µs (tpHL), 15 µs (tpLH) - fast response for real-time power integrity monitoring |
| Output Sink Current | 16 mA at −40°C to +85°C - drives standard 10 kΩ pull-up to 5 V with <0.4 V saturation |
Pinout & Package
SOT-89 package: 3-pin surface-mount, 1.5 mm height, 74°C/W junction-to-case thermal resistance, lead-free and green-compliant (G1 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-collector output | Sinks current when VCC < VDET−; requires external pull-up for logic-high state |
| 2 (GND) | Ground reference | Return path for internal circuitry and output sink current; must be low-impedance |
| 3 (VCC) | Supply input | Monitored voltage rail; powers internal reference/comparator; operates from 0.8 V to 18 V |
Key Features
| Feature | Design Value |
|---|---|
| Precision threshold with tempco | ±0.01 %/°C - ensures stable 2.7 V detection across −40°C to +85°C ambient |
| Ultra-low standby current | 30 µA at 5.25 V - minimizes parasitic drain in battery-backed systems |
| No external components required | Integrated reference + comparator + hysteresis - eliminates calibration resistors and capacitors |
| Robust noise immunity | 50 mV hysteresis + 100 pF load tolerance - rejects high-frequency supply ripple and ESD transients |
Applications
| Low-Battery Detector | Processor Reset Generator |
|---|---|
|
Use Scenario: Monitoring single-cell Li-ion or alkaline battery voltage in portable medical devices. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset when cell voltage drops below 2.7 V. Use Value: Prevents data corruption and unsafe operation by halting MCU execution before brownout-induced logic errors occur. |
Use Scenario: Power-on and brownout reset for 3.3 V microcontrollers in industrial PLC modules. IC Role / Device Role / Timing Role: Generates clean, debounced reset pulse with 10–15 µs delay to meet ARM Cortex-M timing requirements. Use Value: Guarantees deterministic boot sequence without external RC timing networks or supervision ICs. |
| Power-Fail Indicator | Battery Backup Control |
|
Use Scenario: Detecting AC mains loss in smart meter backup circuits using DC bus derived from rectified line. IC Role / Device Role / Timing Role: Active-low flag signaling imminent power failure to initiate EEPROM save and shutdown routines. Use Value: Enables >100 ms warning window before VCC collapses below 0.8 V, sufficient for nonvolatile write completion. |
Use Scenario: Enabling backup power switchover in real-time clock (RTC) modules during main supply interruption. IC Role / Device Role / Timing Role: Controls MOSFET gate driver or analog switch to route battery to RTC VDD when main VCC falls below 2.7 V. Use Value: Eliminates need for external voltage comparators and reference ICs, reducing BOM count and PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB27DBZR | 2.7 V threshold, push-pull output, 1.8–6 V supply range, higher quiescent current (450 nA min) | Requires no pull-up resistor but lacks open-collector flexibility for shared reset busses | Select when system uses dedicated reset line and needs faster release time (typ. 2 µs) |
| APX803S-27SA-7 | 2.7 V threshold, open-collector, wider temp range (−40°C to +125°C), higher max VCC (6.5 V) | Not rated for 18 V operation; unsuitable for unregulated industrial supplies above 6.5 V | Select for automotive under-hood applications requiring extended temperature support |
Compared with TLV803EB27DBZR and APX803S-27SA-7, AZ7027RTR-G1 uniquely supports 18 V input and 0.8 V minimum operating voltage-critical for wide-input industrial power monitors-while retaining open-collector compatibility with legacy reset architectures.
Availability
AZ7027RTR-G1 is available at Aetrix Electronics and suitable for battery-powered medical devices, industrial PLCs, smart meters, and RTC backup systems requiring stable component supply with RoHS-compliant green packaging.
Supply support for AZ7027RTR-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 analog IC designer specializing in high-reliability power management and signal conditioning solutions for industrial and consumer markets.
The AZ70XX series was developed specifically for cost-sensitive, space-constrained voltage monitoring in battery-operated and mains-powered embedded systems-emphasizing precision, low power, and robust noise immunity without external components.
FAQ
What is the maximum supply voltage the AZ7027RTR-G1 can withstand?
The AZ7027RTR-G1 supports absolute maximum VCC of 20 V, with recommended operating range up to 18 V. This allows direct connection to unregulated 12 V or 15 V industrial rails without external regulation, unlike many competing detectors limited to 6 V or lower.
Does the AZ7027RTR-G1 require an external pull-up resistor on its output?
Yes-the open-collector output mandates an external pull-up resistor to define the logic-high voltage level. Typical values range from 4.7 kΩ to 100 kΩ depending on rise time and bus loading requirements; the device sinks up to 16 mA while maintaining ≤0.4 V saturation.
How does hysteresis improve reliability in noisy environments?
The 50 mV typical hysteresis creates separate detect (2.7 V) and release (2.75 V) thresholds, preventing rapid output toggling when VCC oscillates near the nominal threshold due to switching noise or ripple-ensuring clean, glitch-free reset assertion.
Can the AZ7027RTR-G1 operate reliably at 0.9 V supply?
No-its minimum operating voltage (VOPR) is 0.8 V typical, but output behavior becomes undefined below that point. At 0.9 V, the device remains functional and will assert reset if VCC drops below 2.7 V, provided VCC stays ≥0.8 V during detection and output transition.
AZ7027RTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.7V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AZ7027RTR-G1 FAQ
1.How can I place an order for AZ7027RTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ7027RTR-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 AZ7027RTR-G1 reliable?
The price and inventory of AZ7027RTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ7027RTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ7027RTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ7027RTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ7027RTR-G1?
AZ7027RTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ7027RTR-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 AZ7027RTR-G1?
For technical support, including AZ7027RTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ7027RTR-G1 requirements.
6.How does Aetrix verify that AZ7027RTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ7027RTR-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 AZ7027RTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ7027RTR-G1?
All AZ7027RTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ7027RTR-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 AZ7027RTR-G1 part is unused and in its original packaging.
Return procedure for AZ7027RTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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