STMicroelectronics STM6710LWB7F

Overview

STM6710LWB7F from STMicroelectronics is a quad-voltage microprocessor supervisory IC in SOT23-6 (WB) package, monitoring up to four supply rails (5.0 V, 3.3 V, 1.8 V, and adjustable 0.62 V threshold) with ±1.5% accuracy, 200 ms reset timeout, <35 µA quiescent current, and open-drain RESET output valid down to V1IN/V2IN = 1.0 V - deployed in server/workstation power sequencing and telecom baseband boards.

For engineers reviewing the STM6710LWB7F datasheet, STM6710LWB7F pinout, STM6710LWB7F application, or STM6710LWB7F equivalent, this page delivers verified functional identity, exact pin roles, temperature-rated operation (–40 °C to +105 °C), factory-trimmed voltage thresholds, and design-meaningful timing and power specifications without inference.

Technical Context

The STM6710LWB7F operates as a quad-supply monitor powered via V2IN, which is both supply input and monitored rail - enabling full four-rail supervision unlike triple-monitor variants (e.g., STM6700). It uses internal precision voltage references and comparator hysteresis (0.3%) to reject transients and prevent false resets.

Its RESET output is open-drain with a weak 10 µA internal pull-up to V2IN, remains asserted low until all monitored voltages exceed their thresholds, then holds low for 200 ms (typ.) before deassertion - ensuring reliable processor initialization after brown-out recovery.

Key Specifications

Pinout & Package

SOT23-6 (WB) package: 6-pin surface-mount, 2.8 mm × 1.75 mm footprint, 1.45 mm max height, 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 MAX6326US29D3+, the STM6710LWB7F uniquely integrates four independently configurable voltage monitors with factory-trimmed accuracy and extended temperature range - eliminating component count and inter-rail timing uncertainty in complex embedded power systems.

Availability

STM6710LWB7F is available at Aetrix Electronics and suitable for server/workstations, telecommunications infrastructure, and networking equipment requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for STM6710LWB7F 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, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.

The STM67xx series is ST's precision voltage supervisor product line, engineered specifically for multi-rail power integrity in high-reliability computing and communications systems - emphasizing accuracy, low power, and compact packaging.

FAQ

What is the function of the V4IN pin on STM6710LWB7F?

V4IN is an adjustable voltage input referenced to an internal 0.62 V threshold with ±1.5% accuracy. When used with an external resistor divider, it enables monitoring of any supply voltage above 0.62 V - such as 1.2 V, 2.8 V, or custom rails - without requiring additional components or calibration.

Can STM6710LWB7F monitor a 1.2 V supply directly?

No - the minimum detectable voltage is defined by the 0.62 V internal reference. To monitor 1.2 V, connect a resistor divider (e.g., R1 = 91 kΩ, R2 = 100 kΩ) between the 1.2 V rail and V4IN so that the divided voltage equals 0.62 V at the trip point, satisfying the device's input specification.

How does the RESET timeout behave when multiple supplies recover at different rates?

RESET remains asserted low until *all* monitored supplies (V1IN–V4IN) exceed their respective thresholds, then holds low for the full 200 ms timeout period regardless of individual rail recovery timing - ensuring synchronous system reset after complete power stabilization.

Is an external pull-up resistor required for the RESET output?

No - the device includes a 10 µA internal pull-up to V2IN. An external pull-up is optional and only needed if interfacing with a higher-voltage logic domain (e.g., 5 V MCU) or when stronger drive capability is required; the internal circuitry prevents reverse current flow into V2IN.