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STMicroelectronics STM1061N34WX6F
- Part No.:
- STM1061N34WX6F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
STM1061N34WX6F.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,289
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Product details
Overview
STM1061N34WX6F from STMicroelectronics is a low-power, factory-trimmed voltage detector IC with 3.4V ±2% threshold, open-drain active-low output, 0.9µA typical supply current at 3.0V, and guaranteed operation down to VCC = 0.7V. It monitors power rails in battery-powered systems, provides reset assertion during brownout, and features built-in hysteresis (VHYST ≈ 0.068V) and transient immunity for reliable system initialization in portable electronics.
For engineers reviewing the STM1061N34WX6F datasheet, STM1061N34WX6F pinout, STM1061N34WX6F application, or STM1061N34WX6F equivalent, this device serves as a precision, ultra-low-quiescent-current reset supervisor for microcontroller-based embedded systems requiring stable undervoltage detection across –40°C to +85°C.
Technical Context
The STM1061N34WX6F implements a precision bandgap reference and comparator architecture to monitor VCC against a fixed 3.4V detect threshold (VTH–), asserting its open-drain OUT pin low when VCC falls below VTH– and releasing it only after VCC rises above VTH+ = VTH– + VHYST (≈3.468V). Its internal N-channel output driver sinks up to 22mA at VCC = 3.0V and VDS = 0.5V, enabling direct interface with standard logic pull-ups.
Designed for robustness in noisy environments, the device rejects negative-going VCC transients ≤100µs at 100mV overdrive and maintains valid output state down to 0.7V supply - critical for deep-brownout detection in Li-ion and coin-cell applications. It operates continuously across 0.7–6.0V supply range with ±100 ppm/°C threshold temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Threshold | 3.4V ±2% at 25°C - ensures precise brownout detection without external calibration |
| Supply Current | 0.9µA typ at 3.0V - enables multi-year battery life in always-on monitoring circuits |
| Operating Voltage Range | 0.7V to 6.0V - supports detection during deep discharge and compatibility with 5V systems |
| Output Type | Open-drain active-low - allows wired-OR reset bus sharing and level-shifting to higher-voltage rails |
| Hysteresis | 0.02VTH– to 0.08VTH– (≈68–272mV) - prevents chatter near threshold during slow-rising/falling supplies |
| Detect Delay | 25µs max (VCC falling at 10mV/µs) - ensures timely reset assertion before MCU instability |
| Release Delay | 30–200µs (VCC rising at 10mV/µs) - guarantees clean release after stable supply recovery |
Pinout & Package
STM1061N34WX6F is packaged in SOT23-3 (WX suffix), a 3-pin surface-mount package with 0.95mm pitch, 2.9mm × 1.3mm footprint, and ECOPACK® lead-free finish. Pin 1 is OUT, Pin 2 is VCC, Pin 3 is VSS - matching JEDEC MO-178AB standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-drain active-low output | Sinks current when asserted; requires external pull-up to any voltage ≤6V for flexible reset bus design |
| 2 (VCC) | Supply input & monitored voltage rail | Both powers the IC and serves as detection input; valid operation guaranteed down to 0.7V |
| 3 (VSS) | Ground reference | System ground connection; must be low-impedance to ensure accurate threshold referencing |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed threshold | 3.4V set at wafer test with no external components required - eliminates BOM cost and layout area |
| Ultra-low ICC | 0.9µA typical supply current - reduces standby power by >90% vs. legacy reset ICs |
| Sub-1V operation | Valid output assertion guaranteed at VCC = 0.7V - enables detection during final battery discharge phase |
| Transient immunity | Rejects negative VCC glitches ≤100µs at 100mV overdrive - avoids false resets in electrically noisy environments |
| Wide temp range | –40°C to +85°C operation with ±100 ppm/°C threshold drift - suitable for industrial and automotive cabin applications |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
|
Use Scenario: Coin-cell–powered wearable ECG sensor operating intermittently for multi-week battery life. IC Role / Device Role / Timing Role: Voltage detector supervising 3.3V LDO output to assert MCU reset if battery drops below 3.4V. Use Value: 0.9µA quiescent current extends usable battery life by >30% versus comparable detectors; sub-1V operation ensures last-resort reset before data corruption. |
Use Scenario: Battery-backed wireless sensor node deployed in remote factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Brownout protector for ARM Cortex-M0+ MCU, triggering controlled shutdown when 3.6V supply dips due to load transients. Use Value: ±2% threshold accuracy and ±100 ppm/°C drift guarantee consistent reset behavior from –40°C to +85°C; open-drain output interfaces directly with 5V radio module reset line. |
| Smart Meter Battery Backup | USB-C Power Delivery Negotiation |
|
Use Scenario: Lithium-thionyl chloride–backed electricity meter maintaining real-time clock and memory during AC mains failure. IC Role / Device Role / Timing Role: Supervisor monitoring backup rail to initiate graceful save-and-hibernate sequence before voltage collapse. Use Value: Guaranteed 0.7V operation detects final battery depletion stage; 25µs detect delay ensures MCU completes critical SRAM write before reset assertion. |
Use Scenario: USB-C PD controller IC requiring precise 3.3V rail supervision during dynamic voltage negotiation between 5V/9V/15V/20V profiles. IC Role / Device Role / Timing Role: Independent reset generator ensuring PD controller remains functional during rapid VBUS transitions. Use Value: Transient immunity prevents spurious resets during PD contract switching; 3.4V threshold aligns with PD controller's minimum VDD requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB33DBZR | 3.3V threshold, ±1% accuracy, 0.5µA ICC, SOT23-3 - tighter tolerance but lower threshold and no sub-1V guarantee | Preferred where 3.3V rail margin is tight and ultra-low ICC dominates; unsuitable for <0.9V brownout detection | Select if absolute minimum current draw is critical and 3.3V threshold suffices; verify VCC ≥ 0.9V during reset assertion |
| MAX809SEUR+T | 3.08V threshold, ±2.5% accuracy, 12µA ICC, SOT23-3 - higher current, wider tolerance, same package | Legacy drop-in for cost-sensitive designs where 3.08V threshold and higher ICC are acceptable | Choose only for backward compatibility; avoid in new battery-critical designs due to 13× higher ICC |
Compared with TLV803EB33DBZR, STM1061N34WX6F offers higher threshold (3.4V vs. 3.3V) and guaranteed sub-1V operation but slightly higher ICC; versus MAX809SEUR+T, it delivers 13× lower supply current and tighter threshold accuracy at identical package footprint.
Availability
STM1061N34WX6F is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, smart meter battery backup, and USB-C power delivery negotiation requiring stable component supply, long-lifecycle support, and ECOPACK® compliance.
Supply support for STM1061N34WX6F 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensing solutions for industrial, automotive, and consumer markets.
The STM1061 series belongs to ST's precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy reset generation in space-constrained and battery-dependent embedded systems.
FAQ
What is the exact voltage threshold and tolerance of STM1061N34WX6F?
The STM1061N34WX6F has a factory-trimmed detect threshold (VTH–) of 3.400V at 25°C, with guaranteed accuracy of ±2% (3.332V to 3.468V) across –40°C to +85°C. This value is laser-trimmed during wafer test and confirmed in Table 9 of the official ST datasheet Rev 4 (July 2006).
Can STM1061N34WX6F drive a 10kΩ pull-up resistor to 5V?
Yes - the N-channel open-drain output can sink up to 22mA at VCC = 3.0V and VDS = 0.5V, easily pulling a 10kΩ resistor to 5V down to <0.4V logic low. The datasheet explicitly recommends 10kΩ as sufficient in most applications, and the output remains functional even when pulled to voltages up to 6V.
Does STM1061N34WX6F require an external capacitor for stability?
No external capacitor is required for basic operation, but ST recommends placing a 0.1µF bypass capacitor as close as possible to the VCC pin to enhance immunity against negative-going transients. This improves noise rejection without affecting detection timing or threshold accuracy.
Is STM1061N34WX6F qualified for automotive use?
No - STM1061N34WX6F is specified for –40°C to +85°C operation and is not AEC-Q100 qualified. While it meets industrial temperature requirements, ST does not classify it as automotive-grade; for automotive applications, consider ST's dedicated automotive voltage supervisors such as the STLUX series.
STM1061N34WX6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 30µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
STM1061N34WX6F FAQ
1.How can I place an order for STM1061N34WX6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM1061N34WX6F 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 STM1061N34WX6F reliable?
The price and inventory of STM1061N34WX6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM1061N34WX6F is usually 5 days.
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4.How is shipping managed for STM1061N34WX6F?
STM1061N34WX6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM1061N34WX6F 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 STM1061N34WX6F?
For technical support, including STM1061N34WX6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM1061N34WX6F requirements.
6.How does Aetrix verify that STM1061N34WX6F is sourced from the original manufacturer or authorized distributors?
All STM1061N34WX6F 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 STM1061N34WX6F meets industry standards.
7.What is the process for return or replacement of STM1061N34WX6F?
All STM1061N34WX6F units undergo pre-shipment inspection (PSI). If there is an issue with STM1061N34WX6F, 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 STM1061N34WX6F part is unused and in its original packaging.
Return procedure for STM1061N34WX6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM1061N34WX6F Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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