STMicroelectronics VND5050KTR-E

Overview

VND5050KTR-E from STMicroelectronics is a dual-channel automotive high-side driver IC designed for controlling resistive, inductive, and capacitive loads connected to ground. It features 50 mΩ typical on-state resistance per channel, 18 A current limitation (typ), 4.5–36 V operating supply range, and integrated open-load detection in both on- and off-states - deployed in body control modules for headlight and fog lamp switching.

For engineers reviewing the VND5050KTR-E datasheet, VND5050KTR-E pinout, VND5050KTR-E application, or VND5050KTR-E equivalent, key selection criteria include thermal shutdown behavior with automatic restart, reverse battery protection implementation, CMOS-compatible 3.0 V logic inputs, and diagnostic status signaling via open-drain STATUS pins with STAT_DIS control.

Technical Context

The device integrates two independent VIPower M0-5 high-side switches with active power limitation during inrush and overload, enabling safe driving of inductive loads without external snubbers. Each channel includes dedicated input hysteresis (0.25 V), undervoltage shutdown (4.5 V threshold), and output voltage clamping (41–52 V) compliant with ISO 7637 transients.

Diagnostic architecture supports simultaneous monitoring: STATUS pins report open-load (on/off), overtemperature, and output-stuck-to-VCC faults, while STAT_DIS enables selective disabling of status outputs. Protection logic enforces self-limiting thermal transients and maintains safe power dissipation up to thermal shutdown at 150 °C, followed by automatic recovery upon cooling.

Key Specifications

Pinout & Package

Delivered in PowerSSO-24 package: thermally enhanced exposed-tab SO-24 variant with VCC-connected tab for low R_thj-case (2.8 °C/W). Pin 1 marked by notch; top-view pinout follows standard configuration with dual-channel symmetry.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel high-side driver applications.

Compared with VND5050KTR-E, the VND5050JTR-E trades thermal performance for compactness, while the TLE7231G sacrifices diagnostic granularity (no STAT_DIS, no off-state open-load) for integrated safety features - making the KTR-E optimal for thermally demanding, diagnostics-intensive automotive body applications.

Availability

VND5050KTR-E is available at Aetrix Electronics and suitable for automotive body control modules, lighting systems, and engine peripheral interfaces requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.

Supply support for VND5050KTR-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 technologies with broad IP in smart power and embedded processing.

The VND5050KTR-E belongs to ST's VIPower™ high-side driver product line, engineered specifically for robust, diagnostics-rich load switching in harsh automotive environments - emphasizing protection integrity, EMC resilience, and ASIL-ready fault reporting.

FAQ

What is the maximum continuous output current per channel?

The VND5050KTR-E does not specify a fixed continuous current rating; instead, it uses thermal foldback and current limitation. At 25 °C ambient with adequate PCB copper (≥200 cm²), sustained current is limited by junction temperature rise. With 13 V supply and 50 mΩ R_ON, ~6 A delivers ~4 W/channel - staying within safe thermal margin before entering power-limiting mode. Derating is required above 85 °C case temperature.

How does off-state open-load detection work, and what external components are needed?

Off-state open-load detection monitors OUTPUTx voltage when INPUTx is low and the load is disconnected: if V_OUT rises above 2–4 V (VOL threshold), STATUSx asserts low after 200 µs delay. No external components are required beyond a pull-up resistor on STATUSx (typically 4.7 kΩ to VCC) and proper GND protection (diode/resistor network per Figure 28) to ensure valid voltage reference during reverse-battery events.

Can STAT_DIS be left unconnected, and what is its default behavior?

STAT_DIS must not be left floating. Per Table 3, it should be connected to GND (not recommended) or pulled up via 10 kΩ to VCC. When pulled high, STATUSx enters high-impedance state - essential for shared bus configurations. If tied to GND, STATUSx operates normally. Leaving it unconnected risks undefined logic states and potential ESD susceptibility due to lack of defined DC bias.

Is the VND5050KTR-E qualified to AEC-Q100, and which stress tests does it pass?

Yes, the VND5050KTR-E is AEC-Q100 qualified (Grade 1: –40 °C to +125 °C ambient). It passes temperature cycling (1000 cycles), highly accelerated stress test (HAST), unbiased highly accelerated stress test (uHAST), and electrostatic discharge (HBM ±4 kV, CDM ±750 V). Transient immunity is validated per ISO 7637-2 (Pulse 1, 2a, 3a/b, 5a), confirming robustness in automotive electrical environments.