STMicroelectronics L6362ATR

Overview

L6362ATR from STMicroelectronics is an IO-Link and SIO mode transceiver IC compliant with PHY2 (3-wire), supporting COM1/COM2/COM3 modes up to 230.4 kbaud, featuring configurable high-side/low-side/push-pull output stages, 0.3 A current intervention threshold, and integrated 3.3 V/5 V linear regulator - deployed in industrial sensors interfacing with 24 V PLCs or IO-Link masters.

For engineers reviewing the L6362ATR datasheet, L6362ATR pinout, L6362ATR application, or L6362ATR equivalent, key selection criteria include IO-Link PHY2 compliance, dual-voltage I/O compatibility (3.3 V/5 V), programmable output stage topology, fast demagnetization for inductive loads, and comprehensive protection against reverse polarity, open-wire, overtemperature, and surge per EN60947-5-2 and IEC 61000-4-2/4-4.

Technical Context

The L6362A implements a dual-channel power stage (OUTH/OUTL) with selectable topology-high-side (load to GND), low-side (load to VCC), or push-pull-with dead-time control (110–140 ns) to prevent shoot-through. Its I/Q receiver supports robust signal decoding across 8–36 V supply range, with programmable thresholds (VI/QTHLH = 11–12.5 V at VCC ≥ 18 V) and 30–110 ns debounce.

Protection logic integrates undervoltage lockout (VUVON = 6.5 V typ), overcurrent cut-off at 0.3 A, active clamp for inductive energy recovery, and open-wire detection on both GND and VCC pins. Wake-up detection is enabled via OL pin, which asserts low on overload or IO-Link wake event.

Key Specifications

Pinout & Package

Package: VFDFPN 12L (3 × 3 × 0.90 mm), thermally enhanced with exposed pad (non-electrical, recommended for thermal relief only).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IO-Link transceiver applications.

Compared with MAX14824 and TJA1128, the L6362ATR uniquely combines 7–36 V operation, dual-voltage (3.3 V/5 V) regulator, compact 3×3 mm VFDFPN package, and full IO-Link PHY2 compliance - making it optimal for cost-sensitive, space-constrained industrial sensors where MCU I/O voltage flexibility and thermal robustness are critical.

Availability

L6362ATR is available at Aetrix Electronics and suitable for industrial sensors, factory automation I/O modules, and process control transmitters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for L6362ATR 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 ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer markets.

The L6362A belongs to ST's Industrial IO-Link Transceiver product line, engineered specifically to simplify sensor connectivity in Industry 4.0 systems - integrating PHY compliance, load driving, protection, and regulation into a single miniature package.

FAQ

What IO-Link communication modes does the L6362ATR support?

The L6362ATR supports all three standard IO-Link communication modes: COM1 (4.8 kbaud), COM2 (38.4 kbaud), and COM3 (230.4 kbaud), fully compliant with PHY2 specification for 3-wire physical layer implementation. It decodes I/Q signals using internal thresholds (e.g., VI/QTHLH = 11–12.5 V at VCC ≥ 18 V) and provides corresponding logic-level output on the OUTI/Q pin for microcontroller interpretation.

How is the output stage configured for high-side vs. low-side operation?

High-side operation uses only the OUTH pin (OUTL left unconnected), driving loads between OUTH and GND; low-side uses only OUTL (OUTH unconnected), driving loads between VCC and OUTL. Configuration is controlled via IN1/IN2 logic states per Table 14 in the datasheet - IN1 is primary for HS/LS, while IN2 enables dead-time-controlled push-pull. SEL and EN/DIAG pins remain functional in all topologies.

Does the L6362ATR require external components for IO-Link compliance?

Yes - a 22 kΩ pull-up resistor from the I/Q pin to VCC is mandatory for COM mode operation per IO-Link specification. Additional external components include ≥1 μF ceramic capacitor on VCC and 47–68 nF on VDD. No external flyback diode is needed due to integrated active clamp, and no external regulator is required thanks to the selectable 3.3 V/5 V LDO.

What protection features are implemented and how are faults reported?

Faults including overload, overtemperature, undervoltage, reverse polarity, and GND/VCC open-wire are detected internally and reported via the open-drain EN/DIAG and OL pins. OL asserts low on overload or IO-Link wake-up; EN/DIAG pulls low during faults when externally pulled high. Both pins require external pull-up resistors (typically 10 kΩ) to interface with MCU GPIOs for interrupt-driven diagnostics.