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Diodes Incorporated AZ7033ZTR-G1
- Part No.:
- AZ7033ZTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
AZ7033ZTR-G1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92
- Quantity:
- Payment:
- Shipping:
Inventory:4,502
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Product details
Overview
AZ7033ZTR-G1 from BCD Semiconductor Manufacturing Limited is a precision voltage detector IC with 3.3 V detection threshold, open-collector output, and built-in 50 mV hysteresis. It monitors supply rails in embedded systems, delivers reliable reset signaling during power-on and brownout events, and operates down to 0.8 V supply while consuming only 30 µA typical quiescent current at 5.25 V.
For engineers reviewing the AZ7033ZTR-G1 datasheet, AZ7033ZTR-G1 pinout, AZ7033ZTR-G1 application, or AZ7033ZTR-G1 equivalent, this device serves as a low-power, temperature-stable reset generator for microcontroller-based power management where accurate undervoltage detection and noise immunity are critical.
Technical Context
The AZ7033ZTR-G1 integrates a precision on-chip voltage reference and comparator to compare VCC against a fixed 3.3 V threshold (±0.15 V over temperature). Its hysteresis of 50 mV prevents chatter near the trip point under noisy supply conditions.
It features an open-collector output that sinks up to 20 mA at 25°C, requires no external pull-up for basic reset assertion, and remains functional across the full industrial temperature range (−40°C to +85°C) with ±0.01 %/°C detect voltage drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Voltage | 3.3 V nominal (3.15–3.45 V range); ensures system reset triggers before logic supply drops below safe operating margin. |
| Hysteresis Voltage | 50 mV typical; provides noise immunity by requiring ~50 mV recovery above trip point before output releases. |
| Quiescent Current | 30 µA typical at 5.25 V; enables long battery life in low-power monitoring applications. |
| Minimum Operating Voltage | 0.8 V typical; guarantees valid output behavior even during deep brownout or ultra-low-VCC startup. |
| Output Type | Open-collector; allows flexible pull-up configuration and wired-OR reset bus interfacing. |
| Temperature Range | −40°C to +85°C; supports deployment in industrial and consumer equipment without derating. |
| Propagation Delay | 10 µs (falling), 15 µs (rising); ensures timely reset assertion and release aligned with CPU timing requirements. |
Pinout & Package
AZ7033ZTR-G1 is supplied in SOT-89 package (3-pin, surface-mount), with thermal pad exposed on underside for enhanced heat dissipation. Pin 1 = VCC, Pin 2 = GND, Pin 3 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (VCC) | Supply Input | Power rail input; must be ≥0.8 V for valid operation; maximum rating 20 V. |
| Pin 2 (GND) | Ground Reference | Return path for internal circuitry and output sink current; must be connected directly to system ground plane. |
| Pin 3 (OUT) | Open-Collector Output | Active-low reset signal; requires external pull-up resistor to define high state; sinks up to 20 mA when asserted. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | 30 µA typical ICC at 5.25 V enables multi-year battery life in portable voltage monitoring. |
| Precision threshold accuracy | ±0.15 V tolerance at 3.3 V ensures predictable reset timing across production lots and temperature. |
| Noise-immune hysteresis | 50 mV built-in hysteresis eliminates false triggering on supply ripple or transient noise. |
| Wide supply range | Operates from 0.8 V to 20 V VCC, supporting both low-voltage backup rails and higher-voltage main supplies. |
| Industrial temperature support | Valid operation from −40°C to +85°C with <±0.01 %/°C drift enables use in uncontrolled environments. |
Applications
| Low Battery Voltage 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 battery falls below 3.3 V, preventing data corruption during shutdown. Use Value: Prevents unsafe operation below minimum MCU supply voltage while extending usable battery capacity via precise threshold. |
Use Scenario: Generating clean power-on reset for ARM Cortex-M0 microcontrollers in smart home hubs. IC Role / Device Role / Timing Role: Reset generator providing 15 µs delay after VCC exceeds 3.3 V, ensuring stable clock and memory initialization. Use Value: Guarantees deterministic boot sequence without external RC timing components or firmware dependency. |
| Power Fail Indicator | Battery Backup Control |
Use Scenario: Detecting AC mains loss in UPS-enabled network routers to trigger graceful shutdown. IC Role / Device Role / Timing Role: Undervoltage monitor driving LED indicator and interrupt line when 5 V rail drops below 3.3 V. Use Value: Provides immediate visual and electrical indication of impending power failure with 10 µs response latency. |
Use Scenario: Enabling backup SRAM retention during main power interruption in industrial PLCs. IC Role / Device Role / Timing Role: Switch controller activating backup battery path when main 3.3 V rail falls below threshold. Use Value: Ensures zero-data-loss memory hold using fast, low-current detection without loading primary supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803DB33DBZR | 3.3 V threshold, 350 nA IQ, SOT-23-3 package, push-pull output. | Lower power but lacks hysteresis; requires external RC or logic-level translation for open-collector compatibility. | Preferred for ultra-low-power battery sensors where hysteresis is managed externally. |
| MAX809SEUR+T | 3.08 V threshold, 15 µA IQ, SOT-23-3, open-collector, −40°C to +125°C. | Lower threshold (3.08 V) and extended temperature range; tighter 1.5% initial accuracy. | Selected when higher temperature resilience or tighter threshold tolerance is required over cost-sensitive designs. |
Compared with TLV803DB33DBZR and MAX809SEUR+T, AZ7033ZTR-G1 offers balanced performance: mid-range quiescent current (30 µA), confirmed 50 mV hysteresis, and SOT-89 thermal capability-making it optimal for cost-constrained industrial reset circuits needing robust noise immunity and moderate power efficiency.
Availability
AZ7033ZTR-G1 is available at Aetrix Electronics and suitable for processor reset generation, low-battery detection, power-fail indication, and battery backup control requiring stable component supply across automotive infotainment, industrial HMIs, and smart metering platforms.
Supply support for AZ7033ZTR-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 and mixed-signal IC designer specializing in high-reliability power management and sensing solutions for industrial and consumer markets.
AZ7033ZTR-G1 belongs to the AZ70XX series of voltage detectors engineered for accurate, low-power supply monitoring in resource-constrained embedded systems where deterministic reset behavior is essential.
FAQ
What is the function of the open-collector output in AZ7033ZTR-G1?
The open-collector output allows AZ7033ZTR-G1 to drive a shared reset bus with other devices using wired-OR logic. It actively pulls the output low when VCC drops below 3.3 V and floats high otherwise, requiring an external pull-up resistor to define the inactive state voltage level and current.
Can AZ7033ZTR-G1 operate with a 1.8 V supply rail?
No. While AZ7033ZTR-G1 can detect voltages as low as 0.8 V, its minimum operating voltage (VOPR) is 0.8 V - meaning it requires at least 0.8 V on VCC to produce a valid output. At 1.8 V, it functions normally, but detection occurs only relative to its fixed 3.3 V threshold, so it will assert reset if VCC falls below 3.3 V.
How does hysteresis improve reliability in noisy environments?
Hysteresis introduces a 50 mV gap between the detect voltage (3.3 V) and release voltage (3.35 V), preventing rapid toggling of the output when VCC oscillates near the threshold due to ripple or transients. This ensures clean, chatter-free reset signaling without software debouncing.
Is AZ7033ZTR-G1 RoHS compliant and halogen-free?
Yes. The "G1" suffix indicates green packaging per BCD's specification, and the part meets RoHS Directive 2011/65/EU requirements. It is lead-free and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) 1 for SOT-89 packaging.
AZ7033ZTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92
AZ7033ZTR-G1 FAQ
1.How can I place an order for AZ7033ZTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ7033ZTR-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 AZ7033ZTR-G1 reliable?
The price and inventory of AZ7033ZTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ7033ZTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ7033ZTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ7033ZTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ7033ZTR-G1?
AZ7033ZTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ7033ZTR-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 AZ7033ZTR-G1?
For technical support, including AZ7033ZTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ7033ZTR-G1 requirements.
6.How does Aetrix verify that AZ7033ZTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ7033ZTR-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 AZ7033ZTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ7033ZTR-G1?
All AZ7033ZTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ7033ZTR-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 AZ7033ZTR-G1 part is unused and in its original packaging.
Return procedure for AZ7033ZTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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