STMicroelectronics VN808CMTR-E

Overview

VN808CMTR-E from STMicroelectronics is an octal high-side power switch IC built on VIPower M0-3 technology, designed to drive grounded loads in industrial control systems. It features 160 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 VN808CMTR-E datasheet, VN808CMTR-E pinout, VN808CMTR-E application, or VN808CMTR-E equivalent, key selection criteria include channel thermal independence, CMOS-compatible 3.3 V logic input, short-circuit current limitation (0.7–1.7 A), STATUS fault reporting, and PowerSO-36 package thermal resistance (1.3 °C/W junction-to-case).

Technical Context

This device implements eight independent high-side switches with active current limiting and dual-stage thermal protection: junction shutdown (TJSD = 150–200 °C) and case shutdown (TCSD = 125–135 °C), each with dedicated hysteresis (7–15 °C). The STATUS pin provides open-source fault indication for any channel exceeding either threshold.

Each channel supports 50–100 µs turn-on and 75–150 µs turn-off times into a 48 Ω load, with controlled dV/dt (0.7 V/µs ON, 1.5 V/µs OFF) to reduce EMI. Input pins tolerate 5.5 V max with 0.25 V hysteresis and clamp at 6.0–8.0 V, enabling robust interfacing with microcontrollers and FPGAs.

Key Specifications

Pinout & Package

Package: PowerSO-36 - thermally enhanced surface-mount package with exposed VCC tab (Pin 36) for direct PCB copper thermal coupling. Dimensions: 16.0 × 14.5 × 4.1 mm (L×W×H), 36-pin layout with 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VN808CMTR-E, IPS1036H offers higher per-channel current but requires eight separate devices and lacks thermal independence between channels, while TPS27082L matches channel count but sacrifices case-level thermal safety and industrial EFT robustness.

Availability

VN808CMTR-E is available at Aetrix Electronics and suitable for PLC output modules, industrial solenoid drivers, and factory automation I/O terminals requiring stable component supply across extended product lifecycles.

Supply support for VN808CMTR-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, specializing in power management, automotive ICs, and industrial control solutions.

VN808CMTR-E belongs to ST's VIPower high-side switch family, engineered specifically for robust, thermally resilient digital output stages in IEC 61131-compliant industrial controllers.

FAQ

What is the difference between VN808CMTR-E and VN808CM-E?

VN808CMTR-E is the tape-and-reel packaged version of the same octal high-side switch die as VN808CM-E, which ships in tubes. Both share identical electrical specifications, pinout, thermal behavior, and protection features. The only distinction is packaging format: TR denotes 2,500-unit reel for automated SMT assembly, while the tube version supports manual or semi-automated placement.

Can VN808CMTR-E drive inductive loads like relays or solenoids?

Yes - it is explicitly characterized for inductive loads, with built-in demagnetization clamping (V_DEMAG = V_CC−52 V) and fast switching (t_ON ≤ 100 µs) to manage back-EMF. The datasheet includes waveforms for light/heavy inductive loads and short-circuit turn-on, confirming safe operation with L = 6 mH coils and 24 V supplies.

How does the STATUS pin behave during simultaneous junction and case overtemperature events?

STATUS goes high whenever *either* junction (TJ > TJSD) *or* case (TC > TCSD) temperature exceeds its respective threshold. It remains asserted until *both* temperatures fall below their reset points (TJR and TCR). Figure 9 in DS4334 shows the logic: STATUS = HIGH if TJX > TJSD OR TC > TCSD, with no priority masking between the two faults.

Is external reverse polarity protection required when using VN808CMTR-E?

Reverse polarity protection is not internal - the device requires external implementation per Section 8 of DS4334. Two validated methods exist: (1) a series resistor (R_GND) between IC GND and system GND, sized per IGND = 250 mA max; or (2) a series diode with V_RRM > |V_CC|. Neither method degrades normal operation beyond a small ΔV (<100 mV typical).