STMicroelectronics STM1061N19WX6F

Overview

STM1061N19WX6F from STMicroelectronics is a low-power, factory-trimmed voltage detector IC with 1.9V ±2% threshold, open-drain active-low output, 0.9µA typical supply current at 3.0V, guaranteed operation down to VCC = 0.7V, and –40°C to +85°C temperature range. It monitors power rails in portable and battery-powered systems to assert reset signals during undervoltage conditions.

For engineers reviewing the STM1061N19WX6F datasheet, STM1061N19WX6F pinout, STM1061N19WX6F application, or STM1061N19WX6F equivalent, this device serves as a precision, ultra-low-quiescent-current supervisor for microcontroller reset generation, DC/DC converter enable control, and brown-out detection in space-constrained embedded designs.

Technical Context

The STM1061N19WX6F integrates a precision voltage reference and comparator to continuously monitor VCC against a fixed 1.9V detect threshold (VTH–), with hysteresis of 0.02–0.08×VTH– ensuring noise immunity. Its N-channel open-drain output sinks current when asserted and remains functional down to 0.7V supply, enabling reliable reset assertion even during deep brown-out events.

It features built-in immunity to negative-going VCC transients up to 100 µs duration (depending on overdrive), operates across 0.7–6.0V supply range, and delivers stable timing performance with detect delay tPD ≤25 µs and release delay tPR ≤200 µs over full temperature range.

Key Specifications

Pinout & Package

STM1061N19WX6F is housed in a RoHS-compliant SOT23-3 (WX) package - a 3-pin, surface-mount, small-outline transistor outline measuring 2.9 mm × 1.3 mm × 1.0 mm with gull-wing leads and ECOPACK® lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB19DPWR and MAX809SEUR+T, STM1061N19WX6F uniquely balances ±2% accuracy, 0.9 µA ICC, and guaranteed 0.7V operation - making it optimal for battery-critical applications where both precision and ultra-low power are non-negotiable.

Availability

STM1061N19WX6F is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and USB-C power delivery adapters requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for STM1061N19WX6F 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, analog ICs, MEMS, and power devices for industrial, automotive, and consumer markets.

STM1061 belongs to ST's low-power supervisor product line, engineered specifically for battery-operated and energy-sensitive applications demanding precision voltage monitoring with minimal overhead.

FAQ

What is the exact detect threshold voltage for STM1061N19WX6F?

The STM1061N19WX6F has a factory-trimmed detect threshold (VTH–) of 1.900 V ±2% at 25°C, corresponding to top-side marking "19". This value is laser-trimmed during wafer test and verified per Table 9 of the official ST datasheet (Rev 4, July 2006).

Can STM1061N19WX6F drive a 10 kΩ pull-up resistor to 5V?

Yes - its N-channel open-drain output sinks up to 30 mA at VCC = 5.0V and VDS = 0.5V (per Table 5), easily pulling a 10 kΩ resistor to logic low (<0.4V) while interfacing with 5V-tolerant inputs. No level-shifter required.

Does STM1061N19WX6F require an external bypass capacitor?

Yes - ST recommends a 0.1 µF ceramic capacitor placed as close as possible to the VCC pin (Section 3.2). This improves immunity to fast negative transients and stabilizes internal reference operation, especially under dynamic load conditions.

Is STM1061N19WX6F pin-compatible with other STM1061 variants?

Yes - all STM1061 variants (e.g., STM1061N25WX6F, STM1061N34WX6F) share identical SOT23-3 (WX) pinout and electrical interface. Only the threshold voltage and top-side marking differ; no PCB redesign is needed when changing trip points.