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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

STMicroelectronics STM1061N27WX6F

Name: STM1061N27WX6F
Brand: STMicroelectronics
SKU: STM1061N27WX6F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM1061N27WX6F

Manufacturer:: STMicroelectronics

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: STM1061N27WX6F.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-3

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Product details

Overview

STM1061N27WX6F from STMicroelectronics is a low-power, factory-trimmed voltage detector IC with 2.7V ±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 battery or regulated supply rails in portable electronics and embedded systems requiring precise reset assertion during brownout conditions.

For engineers reviewing the STM1061N27WX6F datasheet, STM1061N27WX6F pinout, STM1061N27WX6F application, or STM1061N27WX6F equivalent, key selection criteria include threshold accuracy (±2%), ultra-low ICC, open-drain flexibility for wired-OR reset networks, and transient immunity up to 100µs at 100mV overdrive.

Technical Context

The STM1061N27WX6F implements a precision bandgap reference and comparator architecture to detect VCC falling below 2.7V (VTH–), asserting OUT low with hysteresis (VHYST = 0.02–0.08×VTH–) to prevent chatter near threshold. Output remains asserted until VCC rises above VTH+ = VTH– + VHYST.

Its N-channel open-drain driver supports sink currents from 1.0mA (at VCC = 1.0V, VDS = 0.5V) to 30mA (at VCC = 5.0V, VDS = 0.5V), operates across –40°C to +85°C, and rejects negative-going transients ≤100µs at 100mV overdrive per Figure 11.

Key Specifications

Parameter	Value and Actual Design Meaning
Voltage Threshold	2.70V ±2% at 25°C - ensures reliable reset assertion at nominal 2.7V supply rail
Supply Current	0.9µA typ at VCC = 3.0V - enables multi-year battery life in coin-cell-powered devices
Operating Voltage Range	0.7V to 6.0V - guarantees valid output state even during deep brownout or post-power-up ramp
Output Type	Open-drain active-low - allows level-shifting, wired-OR reset buses, and pull-up to any voltage ≤6V
Hysteresis	0.02V to 0.22V (0.02–0.08×VTH–) - prevents false resets during slow or noisy VCC recovery
Detect Delay	25µs max (VCC fall at 10mV/µs) - provides fast response to critical undervoltage events
Release Delay	30–200µs (VCC rise at 10mV/µs) - ensures stable release after sustained over-threshold recovery

Pinout & Package

STM1061N27WX6F is housed in a RoHS-compliant SOT23-3 (WX) package with 1.3mm pitch, 2.8mm × 2.1mm footprint, and 1.02mm max height - optimized for space-constrained PCB layouts in portable equipment.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Open-drain active-low output	Sinks current when VCC < VTH–; requires external pull-up resistor (e.g., 10kΩ to 3.3V or 5V)
2 (VCC)	Supply voltage input	Monitored rail input; powers internal circuitry and sets operating range (0.7–6.0V)
3 (VSS)	Ground reference	System ground return path; must be low-impedance connection for accurate threshold sensing

Key Features

Feature	Design Value
Factory-trimmed threshold	2.7V set at wafer test with ±2% tolerance - eliminates external resistor network and calibration effort
Ultra-low quiescent current	0.9µA typical at 3.0V - reduces standby power by >90% vs. legacy reset ICs (e.g., MAX809)
Guaranteed output at low VCC	Valid logic state maintained down to VCC = 0.7V - supports reset assertion during deep discharge of Li-ion or alkaline cells
Power supply transient immunity	Immune to negative VCC glitches ≤100µs at 100mV overdrive - avoids spurious resets in noisy DC/DC environments
Package options	SOT23-3 (WX) and SOT323-3 (W) - enables layout flexibility between standard pick-and-place compatibility and ultra-compact footprints

Applications

Portable Medical Devices

Industrial Sensor Nodes

Use Scenario: Coin-cell-powered glucose meter with 2.7V LDO-regulated MCU supply.

IC Role / Device Role / Timing Role: Voltage detector providing brownout reset to prevent flash corruption during battery depletion.

Use Value: 2.7V threshold matches LDO output; 0.9µA ICC extends shelf life beyond 5 years; open-drain output interfaces directly to MCU's active-low reset pin.

Use Scenario: Battery-operated wireless temperature sensor node using sub-1V RF SoC and 3.3V analog front-end.

IC Role / Device Role / Timing Role: Dual-rail monitor detecting failure of 3.3V supply while maintaining reset validity down to 0.7V for ultra-low-power sleep states.

Use Value: Guaranteed output at VCC = 0.7V ensures deterministic reset during deep sleep wake-up; ±2% accuracy prevents premature shutdown at marginal battery voltage.

Consumer Wearables

Automotive Body Control Modules

Use Scenario: Smartwatch with 2.7V system rail powered by single-cell LiPo and buck-boost regulator.

IC Role / Device Role / Timing Role: Primary reset supervisor asserting on regulator dropout or cold-temperature battery sag.

Use Value: 25µs detect delay ensures immediate MCU halt before data loss; hysteresis prevents oscillation during thermal drift of battery OCV.

Use Scenario: 12V-to-3.3V power tree in door module with load-dump and jump-start transients.

IC Role / Device Role / Timing Role: Secondary reset monitor immune to negative VCC spikes up to 100µs duration.

Use Value: Transient immunity per Figure 11 eliminates need for additional RC filtering; SOT23-3 package withstands automotive reflow profiles (JEDEC J-STD-020).

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage detector applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX809TRD3-T	2.7V threshold, ±2.5% accuracy, 1.2µA ICC, push-pull output	Lacks open-drain flexibility; cannot share reset bus or interface to higher-voltage logic	Select only if push-pull drive is required and board-level pull-up is undesirable
TPS3808G33DBVR	3.3V threshold, ±0.5% accuracy, 1.1µA ICC, adjustable delay, open-drain	Fixed 3.3V threshold - incompatible with 2.7V system rails without external divider	Use only if higher accuracy or programmable delay is prioritized over exact 2.7V trip point

Compared with MAX809TRD3-T and TPS3808G33DBVR, STM1061N27WX6F uniquely combines exact 2.7V factory trim, open-drain output, sub-1µA ICC, and guaranteed operation down to 0.7V - making it optimal for space- and power-constrained 2.7V systems where reset reliability under brownout is critical.

Availability

STM1061N27WX6F is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, consumer wearables, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM1061N27WX6F 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 microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

STM1061 belongs to ST's low-power supervisory IC product line, engineered specifically for battery-powered and energy-sensitive applications where precision voltage monitoring, minimal quiescent current, and robust transient immunity are mandatory.

FAQ

What is the exact voltage threshold and tolerance for STM1061N27WX6F?

The STM1061N27WX6F has a factory-trimmed detect voltage (VTH–) of 2.70V with ±2% accuracy over –40°C to +85°C, confirmed in Table 5 and Table 9 of the official datasheet. This corresponds to a guaranteed range of 2.646V to 2.754V at 25°C, and includes temperature coefficient of ±100 ppm/°C.

Can STM1061N27WX6F drive a microcontroller reset pin directly?

Yes - its open-drain active-low output sinks up to 30mA at VCC = 5.0V (VDS = 0.5V), sufficient to assert standard CMOS reset inputs. A 10kΩ pull-up resistor to the MCU's VDD (≤6V) is recommended, as specified in Section 3.1 and Figure 6 of the datasheet.

Does STM1061N27WX6F require an external capacitor for stability?

No external capacitor is required for basic operation, but a 0.1µF bypass capacitor placed close to the VCC pin is explicitly recommended in Section 3.2 to enhance immunity against high-frequency transients - consistent with Figure 11's transient rejection curve and ST's layout guidance.

Is STM1061N27WX6F qualified for automotive applications?

STM1061N27WX6F is rated for –40°C to +85°C operation and packaged in ECOPACK®-compliant SOT23-3, but it is not AEC-Q100 qualified. ST explicitly states in the datasheet disclaimer that non-automotive-grade parts "may only be used in automotive applications at user's own risk" - design-in requires full system-level validation.

STM1061N27WX6F 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:: 2.7V

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

STM1061N27WX6F FAQ

1.How can I place an order for STM1061N27WX6F through Aetrix?

Please submit a Request for Quotation (RFQ) for STM1061N27WX6F 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 STM1061N27WX6F reliable?

The price and inventory of STM1061N27WX6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM1061N27WX6F is usually 5 days.

3.What payment methods are accepted for STM1061N27WX6F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM1061N27WX6F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM1061N27WX6F?

STM1061N27WX6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM1061N27WX6F 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 STM1061N27WX6F?

For technical support, including STM1061N27WX6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM1061N27WX6F requirements.

6.How does Aetrix verify that STM1061N27WX6F is sourced from the original manufacturer or authorized distributors?

All STM1061N27WX6F 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 STM1061N27WX6F meets industry standards.

7.What is the process for return or replacement of STM1061N27WX6F?

All STM1061N27WX6F units undergo pre-shipment inspection (PSI). If there is an issue with STM1061N27WX6F, 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 STM1061N27WX6F part is unused and in its original packaging.

Return procedure for STM1061N27WX6F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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