STMicroelectronics VND5E050AJ-E

Overview

VND5E050AJ-E from STMicroelectronics is a dual-channel automotive high-side driver IC in PowerSSO-12 package, delivering 50 mΩ on-resistance per channel, 27 A typical current limit, and analog proportional current sense per output. It integrates undervoltage shutdown, overtemperature auto-restart, reverse-battery protection, and diagnostics including short-to-VCC and off-state open-load detection - used for driving 12V grounded resistive/inductive loads such as solenoids and LED arrays in body control modules.

For engineers reviewing the VND5E050AJ-E datasheet, VND5E050AJ-E pinout, VND5E050AJ-E application, or VND5E050AJ-E equivalent, key selection criteria include its 4.5–28 V operating range, 2 µA standby current, CMOS-compatible 3.0 V inputs, thermal shutdown with hysteresis, and dedicated CS_DIS pin for shared current-sense resistor management.

Technical Context

This device implements two independent VIPower M0-5 high-side switches with integrated power limitation logic that actively manages inrush and overload by dynamically limiting output voltage drop (VON ≤ 25 mV at 0.1 A) and clamping transient energy (EMAX = 104 mJ). Each channel features a dedicated analog current sense path with ±15% full-scale accuracy across -40°C to +150°C and supports diagnostic disable via CS_DIS.

Protection architecture includes bidirectional clamp (Vclamp = 41–52 V), loss-of-ground/VCC detection, self-limiting fast thermal transients, and thermal shutdown at 150°C with 135°C auto-restart threshold. Input logic complies with 3.0 V CMOS levels (VIH = 2.1 V, VIL = 0.9 V) and includes 0.25 V hysteresis for noise immunity in harsh automotive environments.

Key Specifications

Pinout & Package

Package: PowerSSO-12 (exposed tab connected to VCC), surface-mount, thermally enhanced for automotive under-hood use.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VND5E050AJ-E, the VND5E050AK-E offers superior thermal dissipation in PowerSSO-24 but increases PCB area, while the TPS4H160-Q1 trades analog sensing for digital configurability and lower integration density - making VND5E050AJ-E optimal for cost-sensitive, space-constrained dual-load automotive nodes needing analog diagnostics.

Availability

VND5E050AJ-E is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting systems, and engine management subsystems requiring stable component supply, AEC-Q100 Grade 1 qualification, and long-term production continuity.

Supply support for VND5E050AJ-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 automotive-grade power ICs, microcontrollers, and sensors with vertical manufacturing and AEC-Q100 validation infrastructure.

The VND5E050AJ-E belongs to ST's VIPower™ high-side driver family, engineered specifically for 12 V automotive load driving with integrated protection, diagnostics, and low-power standby - targeting body electronics, lighting, and chassis applications.

FAQ

What is the maximum continuous output current per channel?

The VND5E050AJ-E does not specify a fixed continuous current rating; instead, it uses active power limitation to sustain safe operation. At 25°C ambient with adequate PCB copper (≥ 100 cm²), continuous current is limited by thermal rise: with Rthj-amb ≈ 25 °C/W (PowerSSO-12), 5 A yields ~125°C junction temperature - within 150°C shutdown threshold. Derating is required above 85°C ambient.

How does off-state open load detection work without loading the circuit?

Off-state open load detection applies a low-current test pulse (<10 µA) through the output FET's parasitic body diode while the channel is disabled. The device measures resulting voltage at OUTPUTx and compares it to internal thresholds. No external bias or pull-up is needed, and detection works with GND-referenced loads only - confirmed in Table 10 and Figure 14.

Can CS_DIS be left floating or tied to GND?

No - CS_DIS must never be left floating or tied to GND. Per Table 2, it must be pulled to VCC via a 10 kΩ resistor if unused, or driven actively high (≥2.1 V) to disable current sense. Floating or GND connection causes undefined behavior: sense pins may float high, corrupting diagnostics or causing false overload flags due to leakage paths.

Is reverse battery protection internal or external?

Reverse battery protection is partially internal but requires external GND-line components. The IC tolerates −0.3 V on VCC (Table 3), but GND pin reverse current is limited to 200 mA. Therefore, an external diode or resistor network (Figure 32, Section 3.1) must be added between system GND and IC GND to block full reverse current - making protection system-level, not fully monolithic.