STMicroelectronics STM1061N25WX6F

Overview

STM1061N25WX6F from STMicroelectronics is a low-power, factory-trimmed voltage detector IC with 2.5V ±2% threshold, open-drain active-low output, 0.9µA typical supply current at 3V, and guaranteed operation down to VCC = 0.7V. It monitors power rails in portable electronics, microcontroller reset circuits, and battery-powered systems where precision brownout detection and ultra-low quiescent current are critical.

For engineers reviewing the STM1061N25WX6F datasheet, STM1061N25WX6F pinout, STM1061N25WX6F application, or STM1061N25WX6F equivalent, this device supports precise undervoltage detection in space-constrained designs requiring SOT23-3 packaging, transient-immune operation, and compatibility with mixed-voltage logic interfaces via its open-drain output.

Technical Context

The STM1061N25WX6F integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.5V detect threshold (VTH–), with hysteresis of 0.05×VTH– (±100 ppm/°C tempco). Its N-channel open-drain output sinks up to 30mA at VCC = 5V and VDS = 0.5V, and asserts within 25µs when VCC falls below VTH–.

It operates across 0.7–6.0V supply range and –40°C to +85°C ambient, with built-in immunity to negative-going VCC transients ≤100µs (depending on overdrive), and maintains valid output state down to 0.7V VCC - enabling reliable reset assertion during deep brownout conditions.

Key Specifications

Pinout & Package

STM1061N25WX6F is housed in a RoHS-compliant, ECOPACK®-certified SOT23-3 package (3-lead small outline transistor), with 1.3mm pitch, 2.9mm × 1.3mm footprint, and 1.0mm height - optimized for high-density PCB layouts in portable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB25DBZR and MAX809SEUR+T, STM1061N25WX6F uniquely balances ±2% threshold accuracy, 0.9µA ICC, and 30mA sink capability in SOT23-3 - making it optimal for cost-sensitive, battery-powered systems requiring both precision and interface flexibility.

Availability

STM1061N25WX6F is available at Aetrix Electronics and suitable for microcontroller reset supervision, Li-ion battery protection, DC/DC power-good monitoring, and IoT sensor node brownout detection requiring stable component supply across production volumes and long-lifecycle programs.

Supply support for STM1061N25WX6F 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 silicon solutions for automotive, industrial, and consumer markets since 1987.

The STM1061 belongs to ST's precision analog supervisor IC product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in portable and energy-constrained embedded systems.

FAQ

What is the minimum VCC voltage at which STM1061N25WX6F guarantees correct output assertion?

The device guarantees valid active-low output assertion down to VCC = 0.7V at 25°C, as confirmed in Section 3.1 and Table 5 of the official datasheet. This enables reliable reset generation even during deep brownout events where supply collapses below typical logic thresholds.

Can STM1061N25WX6F drive a 10kΩ pull-up resistor to 5V while maintaining logic-low levels?

Yes - with VCC ≥ 1.0V, the N-channel output can sink ≥1.0mA (Table 5), producing <0.4V at the OUT node when pulled to 5V via 10kΩ. This satisfies standard TTL/CMOS logic-low requirements and is verified in Figure 13 and Figure 14 of the datasheet.

Does STM1061N25WX6F require an external bypass capacitor?

A 0.1µF ceramic capacitor placed between VCC and VSS, mounted as close as possible to the pins, is recommended per Section 3.2 to enhance immunity to fast negative-going transients. While not strictly mandatory for basic functionality, omission degrades transient rejection performance per Figure 11.

Is the 2.5V threshold calibrated over temperature, and what is its drift behavior?

The threshold exhibits ±100 ppm/°C temperature coefficient (Table 5), resulting in ±25mV drift over –40°C to +85°C - well within the ±2% initial tolerance. Detect and release voltages track linearly with temperature, as shown in Figure 12, ensuring consistent hysteresis margin across the full operating range.