STMicroelectronics STM6710DWB6F

Overview

STM6710DWB6F from STMicroelectronics is a quad-voltage microprocessor supervisory IC that monitors 5.0 V, 3.3 V, 1.8 V, and an adjustable input (0.62 V threshold) with ±1.5% accuracy, 200 ms reset timeout, <35 µA quiescent current, and open-drain RESET output - deployed in server/workstation power sequencing and multi-rail telecom systems.

For engineers reviewing the STM6710DWB6F datasheet, STM6710DWB6F pinout, STM6710DWB6F application, or STM6710DWB6F equivalent, key selection criteria include factory-trimmed 5 V/3.3 V/1.8 V thresholds, SOT23-6 package footprint compatibility, immunity to supply transients, and support for manual reset integration without external debounce.

Technical Context

The STM6710DWB6F operates as a quad-supply monitor powered via V2IN (3.3 V), which is itself monitored - enabling simultaneous supervision of 5.0 V (V1IN), 3.3 V (V2IN), 1.8 V (V3IN), and an adjustable voltage (V4IN) referenced to 0.62 V. It asserts active-low RESET when any input falls below its threshold and holds it for 200 ms (typ.) after all voltages recover.

Its internal comparator architecture includes 0.3% hysteresis and 60 ppm/°C threshold temperature coefficient, ensuring stable trip points across –40 to +85 °C. The open-drain RESET features a 10 µA weak internal pull-up to V2IN and remains valid down to V1IN or V2IN = 1.0 V - critical for brown-out detection during power ramp-up.

Key Specifications

Pinout & Package

SOT23-6 (WB) package: 2.8 mm × 1.75 mm × 1.3 mm body, 0.95 mm lead pitch, RoHS-compliant ECOPACK® tape-and-reel (3000 pcs/reel).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-voltage supervisory applications.

Compared with TPS3808G33DBVR and MAX6816EUT+T, the STM6710DWB6F uniquely delivers factory-trimmed quad-rail supervision in the same SOT23-6 footprint - enabling consolidation of four discrete supervisors while retaining adjustable threshold capability for custom voltage rails.

Availability

STM6710DWB6F is available at Aetrix Electronics and suitable for server/workstations, telecommunications infrastructure, and industrial PLCs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM6710DWB6F 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 sensor solutions for industrial, automotive, and consumer markets.

The STM67xx series is part of ST's precision power monitoring portfolio, engineered specifically for high-reliability multi-voltage systems where accurate, coordinated reset sequencing and minimal board area are critical design constraints.

FAQ

What is the minimum operating voltage for V2IN on the STM6710DWB6F?

The STM6710DWB6F requires V2IN ≥ 1.2 V over the full –40 °C to +85 °C temperature range to guarantee proper operation and RESET validity. Below this, internal comparators may not function reliably, and RESET assertion becomes undefined - confirmed in Table 4 of the official datasheet (DocID16887 Rev 5).

Can V4IN be used to monitor a 1.2 V rail, and what resistor values are recommended?

Yes - configure V4IN with a resistor divider to scale 1.2 V down to the internal 0.62 V reference. Using Equation 2 from the datasheet (R1 = R2 × (VTHx / 0.62 V − 1)), a 100 kΩ R2 yields R1 ≈ 93.5 kΩ. ST specifies ≤ ±0.2 µA input bias, so 100 kΩ resistors introduce <1% error - validated in Section 4.2 and Table 5.

Does the STM6710DWB6F support manual reset, and how is it implemented?

Yes - connect a push-button switch between any unused VxIN pin (e.g., V4IN) and GND. Pressing the button pulls the input below 0.62 V, triggering RESET. The datasheet specifies ≥140 ms button release time to deassert RESET, and no external debounce components are required - detailed in Figure 8 and Section 4.4.

Is the RESET output compatible with 5 V logic systems when V2IN = 3.3 V?

Yes - the open-drain RESET can be pulled up to 5 V externally. The datasheet confirms reverse-current protection prevents 5 V pull-up from back-driving V2IN (Section 4.1). VOL remains ≤0.3 V at ISINK = 2 mA, ensuring solid low-level signaling into 5 V CMOS inputs - verified in Table 5's VOL specification.