STMicroelectronics VN808TR-E

Overview

VN808TR-E from STMicroelectronics is an octal high-side power switch IC realized in VIPower M0-3 technology, designed to drive grounded loads in industrial control systems. It features 150 mΩ R_DS(on) per channel, 0.7 A continuous output current, 45 V supply voltage rating, and integrated junction/case thermal shutdown with automatic restart. It is used in PLC output modules compliant with IEC 61131.

For engineers reviewing the VN808TR-E datasheet, VN808TR-E pinout, VN808TR-E application, or VN808TR-E equivalent, key selection criteria include channel-wise current limitation (0.7 A), thermal hysteresis (7–15 °C), status pin open-source fault reporting, and PowerSO-36 package thermal resistance (1.3 °C/W junction-to-case).

Technical Context

The VN808TR-E integrates eight independent high-side drivers with active current limiting, dual-stage thermal protection (junction TJSD = 150–200 °C; case TCSD = 125–135 °C), and undervoltage lockout (VUSD = 7–10.5 V). Each channel operates with VCC/2-compatible logic inputs and provides diagnostic feedback via a shared open-source STATUS pin.

Its internal architecture combines gate drivers, current-sense circuitry, and thermal sensors per channel, enabling autonomous overload recovery without external supervision. The device maintains operation of non-faulted channels during thermal events, supporting fault-tolerant industrial I/O designs.

Key Specifications

Pinout & Package

The VN808TR-E is housed in a PowerSO-36 package with an exposed VCC-connected copper tab for thermal management and mechanical anchoring. Pin 36 (TAB) is internally connected to VCC and must be soldered to a large copper pour for optimal heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VN808TR-E, VN808-E offers identical performance in tube format but lacks automated assembly compatibility, while IPS1032H trades channel count and dual thermal protection for higher single-channel current-making it unsuitable for direct substitution in 8-channel industrial I/O modules.

Availability

VN808TR-E is available at Aetrix Electronics and suitable for PLC output modules, industrial motor starters, factory I/O terminals, and building management system actuator interfaces requiring stable component supply across multi-year production cycles.

Supply support for VN808TR-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 ICs with vertical manufacturing capability.

The VN808TR-E belongs to ST's VIPower high-voltage intelligent power switch family, engineered specifically for robust, self-protected digital output stages in industrial control equipment.

FAQ

What is the maximum continuous output current per channel?

The VN808TR-E delivers 0.7 A DC per channel continuously under specified thermal conditions (T_CASE ≤ 100 °C, R_th(JC) = 1.3 °C/W). This value is confirmed in Table 3 of DS4333 Rev 14 and applies to each of the eight independently controlled outputs.

How does the STATUS pin indicate fault conditions?

The STATUS pin is an open-source output that pulls high (2–4 mA sink capability) when any channel triggers junction (TJSD) or case (TCSD) thermal shutdown. It remains low during normal operation and undervoltage conditions, per the truth table in Section 4 of DS4333.

Can VN808TR-E drive inductive loads like solenoids or relays?

Yes-the device is explicitly characterized for inductive loads, including bulb lamps and heavy inductors (Figure 9). Its dV_OUT/dt(OFF) of 1.5 V/µs and V_DEMAG clamping (VCC−57 V) suppress flyback spikes, and internal current limiting prevents destructive peak currents during turn-on.

Is external reverse polarity protection required?

Reverse polarity protection is not integrated; it must be implemented externally using either a series resistor (RGND ≥ VCC/IGND, where IGND = 250 mA per Table 1) or a diode between IC GND and system GND, as detailed in Section 7 of DS4333. Failure to implement this risks permanent damage.