STMicroelectronics VN808TR-32-E

Overview

VN808TR-32-E from STMicroelectronics is an octal high-side power switch IC designed for industrial load driving with ground-referenced loads. It delivers 1 A per channel, features 150 mΩ R_DS(on), operates up to 45 V supply, and integrates junction/case thermal shutdown, current limitation, undervoltage lockout, and loss-of-ground protection. It is widely used in PLC output modules compliant with IEC 61131.

For engineers reviewing the VN808TR-32-E datasheet, VN808TR-32-E pinout, VN808TR-32-E application, or VN808TR-32-E equivalent, key selection criteria include per-channel current capability (1 A), thermal independence between channels, STATUS pin fault reporting, and PowerSO-36 package thermal performance (R_th(JC) = 1.3 °C/W).

Technical Context

This device uses ST's VIPower M0-3 BCD technology to integrate eight independent high-side drivers with active current limiting and dual-stage thermal protection-first at junction level (T_JSD = 150–200 °C), then at case level (T_CSD = 125–135 °C). Each channel operates autonomously: non-faulted outputs remain active during thermal events on other channels.

The STATUS pin functions as a common open-source diagnostic output activated only during junction overtemperature or case overtemperature faults. Input logic is V_CC/2 compatible with 0.6 V hysteresis, enabling robust noise immunity in industrial environments. Undervoltage lockout triggers at 7–10.5 V to prevent erratic switching.

Key Specifications

Pinout & Package

Package: PowerSO-36 (exposed V_CC tab), RoHS-compliant ECOPACK® grade, with 36-pin top-view layout and thermal pad connected internally to V_CC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side switching applications.

Compared with VN808TR-32-E, IPS1032H trades current capacity for tighter thermal margins, while TPS27082L sacrifices industrial-grade protections and voltage headroom for footprint reduction-neither offers identical thermal independence or IEC 61000-4-4 robustness.

Availability

VN808TR-32-E is available at Aetrix Electronics and suitable for PLC digital output modules, industrial motor starters, factory automation safety interfaces, and building management system actuator control requiring stable component supply across multi-year production cycles.

Supply support for VN808TR-32-E 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, specializing in automotive, industrial, and power management solutions with vertical manufacturing capabilities.

VN808TR-32-E belongs to the VIPower™ high-side driver family, engineered specifically for ruggedized industrial control applications demanding integrated protection, thermal resilience, and IEC-compliant EMC performance.

FAQ

What is the maximum continuous output current per channel?

The VN808TR-32-E is rated for 1 A DC per channel under specified thermal conditions (T_CASE ≤ 100 °C, adequate PCB copper area). This value is confirmed in Table 1 of DS4333 Rev 14 and reflects sustained operation with internal current limitation active at higher loads.

How does the STATUS pin behave during thermal faults?

The STATUS pin is an open-source output that pulls high only during junction overtemperature (T_J > T_JSD) or case overtemperature (T_C > T_CSD). It remains low during normal operation, undervoltage, or short-circuit events without thermal stress-enabling unambiguous fault classification.

Can IN1–IN8 accept 3.3 V logic signals directly?

No. Inputs require V_CC/2-compatible thresholds: logic high is defined as ≥ V_CC/2 +1 V, and logic low as ≤ V_CC/2 –1 V. With V_CC = 24 V, valid high is ≥13 V-so 3.3 V signals cannot drive the inputs directly without level translation.

Is the exposed tab electrically isolated from other pins?

No. The exposed tab (Pin 36) is internally connected to V_CC, not isolated. It must be soldered to a V_CC-referenced copper pour for thermal and electrical integrity. Using it as a heatsink requires ensuring no unintended short to adjacent ground or signal planes.