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Diodes Incorporated AZ7033Z-E1
- Part No.:
- AZ7033Z-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
AZ7033Z-E1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92
- Quantity:
- Payment:
- Shipping:
Inventory:3,518
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Product details
Overview
AZ7033Z-E1 from BCD Semiconductor Manufacturing Limited is a precision voltage detector IC with 3.3 V detection threshold, open-collector output, and TO-92 package. It monitors supply rails in microcontroller systems, provides reset signaling during brownout or power-up, and operates down to 0.8 V supply while consuming only 30 µA in standby. Used in battery-powered home appliances and embedded logic systems requiring reliable low-power supervision.
For engineers reviewing the AZ7033Z-E1 datasheet, AZ7033Z-E1 pinout, AZ7033Z-E1 application, or AZ7033Z-E1 equivalent, this page delivers verified electrical parameters, validated TO-92 pin mapping, real-world use cases in CPU reset generation and battery backup control, and confirmed alternative parts with documented voltage and hysteresis differences.
Technical Context
The AZ7033Z-E1 implements a precision bandgap reference and comparator architecture to detect falling VCC below 3.3 V (±0.15 V) and release above 3.35 V, delivering 50 mV typical hysteresis. Its open-collector output requires external pull-up and sinks up to 20 mA at valid VCC.
It functions across –40°C to +85°C with ±0.01 %/°C detect voltage drift, supports reset assertion within 10 µs of threshold breach, and remains operational down to 0.8 V input-enabling robust supervision even during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Voltage | 3.3 V ±0.15 V - precise reset trigger for 3.3 V logic rails |
| Hysteresis Voltage | 50 mV typical - prevents chatter near threshold under noisy supply conditions |
| Supply Current (Off) | 30 µA typical at 5.25 V - enables multi-year battery life in low-power monitoring |
| Minimum Operating Voltage | 0.8 V typical - sustains valid output state during severe brownout before shutdown |
| Output Type | Open-collector - allows flexible pull-up voltage selection and wired-OR reset bus implementation |
| Delay Time (Low) | 10 µs typical - ensures fast response to supply collapse without false triggering |
| Operating Temperature | –40°C to +85°C - qualified for industrial and consumer appliance environments |
Pinout & Package
Package: TO-92 (bulk packing), 3-pin through-hole, lead-free (E1 suffix), RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-collector output | Sinks current when VCC < 3.3 V; requires external pull-up for logic-high state |
| 2 (GND) | Ground reference | Return path for internal circuitry and output sink current |
| 3 (VCC) | Supply input | Monitored voltage rail; powers internal reference and comparator |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage detection | 3.3 V threshold with ±0.15 V tolerance ensures accurate reset timing for 3.3 V systems |
| Ultra-low quiescent current | 30 µA at 5.25 V enables >10-year operation on coin-cell batteries in standby |
| Valid operation at 0.8 V | Maintains defined output state down to 0.8 V supply, supporting deep brownout recovery |
| Integrated hysteresis | 50 mV typical eliminates noise-induced false resets without external components |
| Industrial temperature range | –40°C to +85°C operation suits home appliances, industrial controls, and embedded logic |
Applications
| Low Battery Voltage Detector | Power Fail Indicator |
|---|---|
Use Scenario: Monitoring alkaline or Li-ion battery packs in portable home appliances such as cordless vacuum cleaners or smart thermostats. IC Role / Device Role / Timing Role: Voltage supervisor that asserts active-low signal when battery drops below 3.3 V, enabling graceful shutdown or low-battery warning. Use Value: Prevents data corruption and system lockup by triggering controlled power-down before undervoltage lockout occurs. | Use Scenario: Detecting AC mains failure in uninterruptible power supplies or battery-backed wall clocks. IC Role / Device Role / Timing Role: Real-time supply rail monitor that activates fail indicator LED or backup enable signal upon 3.3 V rail collapse. Use Value: Enables immediate switchover to backup power with sub-10 µs response, avoiding system interruption. |
| Processor Reset Generator | Battery Backup Control |
Use Scenario: Providing clean reset pulse to ARM Cortex-M0 microcontrollers during cold start or brownout in smart meter designs. IC Role / Device Role / Timing Role: Generates synchronized reset signal after VCC rises above 3.35 V and holds reset until stable operation is confirmed. Use Value: Eliminates need for RC-based reset circuits, improving reset accuracy and reducing BOM count. | Use Scenario: Enabling SRAM or RTC backup power in set-top boxes when main 3.3 V rail fails. IC Role / Device Role / Timing Role: Controls MOSFET gate or analog switch to route battery power to critical memory when VCC falls below 3.3 V. Use Value: Ensures zero-data-loss retention during power transitions with deterministic 50 mV hysteresis margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803DB33PDBZR | Detect voltage: 3.3 V; hysteresis: 100 mV; supply current: 240 nA | Lower power but slower response (200 ms typical delay); SOT-23 package | Select for ultra-low-power battery applications where speed is secondary to energy budget |
| MAX809SEUR+T | Detect voltage: 3.08 V; hysteresis: 150 mV; supply current: 12 µA | Lower threshold and higher hysteresis; requires 1.2 V minimum operating voltage | Select when tighter 3.08 V reset point is needed and 0.8 V brownout support is not required |
Compared with TLV803DB33PDBZR and MAX809SEUR+T, the AZ7033Z-E1 offers superior brownout resilience (0.8 V min operating voltage), faster response (10 µs), and TO-92 compatibility for legacy through-hole designs-making it optimal for cost-sensitive industrial and appliance applications requiring robust 3.3 V supervision.
Availability
AZ7033Z-E1 is available at Aetrix Electronics and suitable for low-battery detection, power-fail indication, processor reset generation, and battery backup control requiring stable component supply across industrial and consumer production programs.
Supply support for AZ7033Z-E1 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 and foundry, specializing in high-reliability power management and supervisory solutions for industrial and consumer markets.
The AZ70XX series is part of BCD's voltage supervisor product line, engineered for accurate, low-power supply monitoring in cost-sensitive embedded systems where TO-92 compatibility and wide temperature operation are essential.
FAQ
What is the exact detect voltage tolerance for AZ7033Z-E1?
The AZ7033Z-E1 has a detect voltage of 3.3 V with a guaranteed range of 3.15 V to 3.45 V at 25°C, per the datasheet's Electrical Characteristics table. This ±0.15 V tolerance ensures reliable reset activation across process and temperature variations in 3.3 V systems.
Does AZ7033Z-E1 require an external pull-up resistor on the output?
Yes-the AZ7033Z-E1 features an open-collector output and must be used with an external pull-up resistor to a valid logic voltage (e.g., 3.3 V or 5 V). Typical values range from 10 kΩ to 100 kΩ, balancing speed, power, and noise immunity.
Can AZ7033Z-E1 operate with a 1.8 V supply rail?
No-AZ7033Z-E1 is designed to monitor a supply rail (VCC) and requires that rail to be ≥0.8 V to function, but its detect threshold is fixed at 3.3 V. It cannot supervise 1.8 V rails; for that, AZ7018Z-E1 (1.8 V variant) would be appropriate.
Is the TO-92 package of AZ7033Z-E1 compatible with standard through-hole PCB footprints?
Yes-the AZ7033Z-E1 uses the standard TO-92 package with 2.54 mm pin pitch and mechanical dimensions matching JEDEC TO-92 specifications, ensuring full compatibility with industry-standard through-hole layouts and automated insertion equipment.
AZ7033Z-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- 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
AZ7033Z-E1 FAQ
1.How can I place an order for AZ7033Z-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ7033Z-E1 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 AZ7033Z-E1 reliable?
The price and inventory of AZ7033Z-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ7033Z-E1 is usually 5 days.
3.What payment methods are accepted for AZ7033Z-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ7033Z-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ7033Z-E1?
AZ7033Z-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ7033Z-E1 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 AZ7033Z-E1?
For technical support, including AZ7033Z-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ7033Z-E1 requirements.
6.How does Aetrix verify that AZ7033Z-E1 is sourced from the original manufacturer or authorized distributors?
All AZ7033Z-E1 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 AZ7033Z-E1 meets industry standards.
7.What is the process for return or replacement of AZ7033Z-E1?
All AZ7033Z-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ7033Z-E1, 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 AZ7033Z-E1 part is unused and in its original packaging.
Return procedure for AZ7033Z-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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