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STMicroelectronics VNQ5050AK-E
- Part No.:
- VNQ5050AK-E
- Manufacturer:
- STMicroelectronics
- Package:
- 24-PowerBSOP (0.295", 7.50mm Width)
- Datasheet:
-
VNQ5050AK-E.pdf
- Description:
- IC PWR DRVR N-CHAN 1:1 PWRSSO24
- Quantity:
- Payment:
- Shipping:
Inventory:2,802
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Product details
Overview
VNQ5050AK-E from STMicroelectronics is a quad-channel automotive high-side driver with integrated analog current sense, designed for driving resistive, inductive, or capacitive loads connected to ground. It features 50 mΩ typical on-state resistance per channel, 19 A typical current limitation, 4.5–36 V operating supply range, and CMOS-compatible 3.0 V logic inputs - enabling direct interfacing with microcontrollers in body control modules and LED lighting systems.
For engineers reviewing the VNQ5050AK-E datasheet, VNQ5050AK-E pinout, VNQ5050AK-E application, or VNQ5050AK-E equivalent, key selection criteria include proportional current sense accuracy across wide load ranges (±10% drift), thermal shutdown with auto-restart, reverse battery protection support, and ISO7637 transient compliance for 12 V/24 V automotive systems.
Technical Context
The VNQ5050AK-E integrates four independent VIPower M0-5 high-side switches with active power limitation during inrush, self-limiting fast thermal transients, and undervoltage/overvoltage protection. Each channel delivers precise proportional current sense (K₀ = 2420 typ., IOUT/ISENSE) when CS_DIS is low, with <65 µs delay between output current rise and sense current response.
It implements dual-stage thermal protection: thermal shutdown triggers at 150–200 °C (TTSD), with automatic restart after cooling to 135–140 °C (TRS), and includes dedicated clamp circuitry limiting VCC spikes to 41–52 V while supporting load dump immunity per ISO7637-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max supply voltage | 41 V - withstands ISO7637 load dump transients without external clamping |
| Operating voltage range | 4.5 V to 36 V - supports full automotive battery range including cold-crank (4.5 V) and 24 V commercial vehicles |
| On-state resistance (per ch.) | 50 mΩ typ. at 25 °C - limits conduction loss to ≤200 mW at 2 A, enabling compact thermal design |
| Current limitation (typ) | 19 A - provides robust short-circuit protection while sustaining >10 A continuous per channel under derating |
| Off-state supply current | 2 µA typ. - ensures ultra-low quiescent consumption for always-on vehicle modules |
| Current sense ratio (K₀) | 2420 typ. (IOUT/ISENSE) - enables accurate real-time load monitoring with ±10% drift over -40 to 150 °C |
| Thermal shutdown threshold | 150 °C min. - activates protection before silicon damage, with 7 °C hysteresis for stable recovery |
Pinout & Package
Delivered in PowerSSO-24 package - thermally enhanced exposed-tab SO-24 variant with VCC-connected tab for efficient heat dissipation in high-power automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail; connects to exposed tab for thermal conduction; clamped to 41–52 V during transients |
| GND | Ground reference | Reverse-battery protected node; requires external diode/resistor network per Figure 25 |
| OUTPUT1–4 | High-side switched outputs | Four independent load connections; each internally limited to 19 A and thermally self-regulating |
| INPUT1–4 | CMOS-compatible control inputs | 3.0 V logic threshold with 0.25 V hysteresis; tolerant of 5.5 V clamp and -0.7 V negative swing |
| CURRENT SENSE1–4 | Analog current mirror outputs | Deliver ISENSE = IOUT/K₀ when CS_DIS = low; high-Z when CS_DIS = high |
| CS_DIS | Current sense enable/disable | Active-high CMOS input; disables sense pins to reduce leakage and system noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Inrush current management | Active power limitation prevents voltage droop and EMI during simultaneous channel turn-on |
| Proportional current sense | 2420 typ. gain with <10% total drift over full temperature/load range enables closed-loop diagnostics |
| Reverse battery protection support | Dedicated GND protection network interface (Figure 25) allows safe operation with external diode/resistor |
| ISO7637 transient immunity | VCC clamp (41–52 V) and internal protection meet Pulse 1, 2a, 3a/b requirements without external TVS |
| Thermal shutdown with auto-restart | 150 °C trip + 7 °C hysteresis enables fault recovery without MCU intervention in intermittent overload |
Applications
| Body Control Module (BCM) | Automotive LED Headlamp Driver |
|---|---|
|
Use Scenario: Controlling door locks, window lifts, and interior lighting via centralized ECU. IC Role / Device Role / Timing Role: Quad high-side switch managing four independent 12 V loads with diagnostic feedback. Use Value: Integrated current sense enables real-time open-load and short-circuit detection per channel without external shunts. |
Use Scenario: Driving high-brightness LED arrays in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: High-side PWM driver with analog current mirroring for LED current regulation and thermal foldback. Use Value: 50 mΩ RON minimizes power loss at 2–5 A drive currents; thermal shutdown prevents LED degradation during thermal runaway. |
| Engine Bay Solenoid Control | Commercial Vehicle Trailer Interface |
|
Use Scenario: Actuating fuel injectors, EGR valves, and turbocharger vanes in harsh under-hood environments. IC Role / Device Role / Timing Role: Robust high-side driver with load-dump immunity and reverse-battery tolerance. Use Value: Withstands 41 V transients and -0.7 V reverse clamp; operates continuously from -40 to 150 °C junction temperature. |
Use Scenario: Managing trailer brake lights, turn signals, and ABS power distribution in 24 V truck/trailer systems. IC Role / Device Role / Timing Role: Four-channel load driver with individual diagnostics for CAN-based fault reporting. Use Value: Proportional current sense feeds real-time load status to vehicle gateway; CS_DIS allows selective channel monitoring to reduce MCU ADC load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS4H160-Q1 | Single-channel, 160 mΩ RON, no integrated current sense, higher voltage rating (60 V) | Lacks multi-channel integration and analog sense; requires external sensing for diagnostics | Prefer for ultra-high-voltage (>41 V) single-load applications where space permits discrete sensing |
| STSPIN32F0A | Integrated 3-phase gate driver + Cortex-M0, no high-side current sense, 60 V max | Targets motor control, not general-purpose load switching; lacks automotive-grade protection set | Choose only when combining motor commutation and basic load control in same subsystem |
Compared with TPS4H160-Q1 and STSPIN32F0A, the VNQ5050AK-E uniquely delivers quad-channel high-side switching with factory-trimmed proportional current sense, thermal auto-recovery, and full ISO7637 compliance - making it optimal for space-constrained, diagnostic-rich automotive body electronics where channel density and embedded diagnostics are critical.
Availability
VNQ5050AK-E is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting systems, solenoid actuation, and trailer interface designs requiring stable component supply across extended temperature and voltage ranges.
Supply support for VNQ5050AK-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, industrial, and power management ICs with strong AEC-Q100 qualification capabilities.
The VNQ5050AK-E belongs to ST's VIPower™ high-side driver family, engineered specifically for automotive load switching with integrated diagnostics, protection, and thermal resilience in demanding under-hood and chassis applications.
FAQ
What is the maximum continuous current per channel at 105 °C ambient?
At 105 °C ambient with standard PCB copper area (see Figure 29), each channel supports ≥8.5 A continuous current before thermal shutdown, based on Rthj-amb ≈ 25 °C/W and 150 °C max junction temperature. Derating curves in Figure 20 confirm ILIMH remains >13.5 A up to 125 °C case temperature.
How does the current sense disable (CS_DIS) function affect system diagnostics?
When CS_DIS is driven high, all four CURRENT SENSE pins enter high-impedance state, eliminating leakage paths and reducing system noise coupling. This allows selective activation of sense channels - e.g., monitoring only active loads - improving ADC accuracy and lowering overall system power consumption by disabling unused analog paths.
Can VNQ5050AK-E drive inductive loads like fuel injectors without external flyback components?
Yes - the device integrates active VCC clamp and demagnetization energy handling (EMAX = 104 mJ per pulse). For typical injector inductance (2–6 mH), it safely absorbs turn-off energy without external diodes, provided VCC rail capacitance meets minimum 100 µF requirement per Figure 27 and layout follows ST's PowerSSO-24 thermal guidelines.
Is reverse battery protection built-in or externally implemented?
Reverse battery protection is externally implemented using ST's recommended GND network (Figure 25): either a series resistor (RGND) or Schottky diode (DGND) between device GND and chassis ground. The VNQ5050AK-E itself tolerates -0.3 V on VCC and -0.7 V on INPUT/CS_DIS pins but requires external network to protect GND pin from -200 mA reverse current.
VNQ5050AK-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 24-PowerBSOP (0.295", 7.50mm Width)
- Series:
- VIPower™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 4
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4.5V ~ 36V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 13.5A
- Rds On (Typ):
- 50mOhm (Max)
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Over Voltage
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerSSO-24
VNQ5050AK-E FAQ
1.How can I place an order for VNQ5050AK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for VNQ5050AK-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VNQ5050AK-E reliable?
The price and inventory of VNQ5050AK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ5050AK-E is usually 5 days.
3.What payment methods are accepted for VNQ5050AK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ5050AK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VNQ5050AK-E?
VNQ5050AK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VNQ5050AK-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VNQ5050AK-E?
For technical support, including VNQ5050AK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ5050AK-E requirements.
6.How does Aetrix verify that VNQ5050AK-E is sourced from the original manufacturer or authorized distributors?
All VNQ5050AK-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VNQ5050AK-E meets industry standards.
7.What is the process for return or replacement of VNQ5050AK-E?
All VNQ5050AK-E units undergo pre-shipment inspection (PSI). If there is an issue with VNQ5050AK-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VNQ5050AK-E part is unused and in its original packaging.
Return procedure for VNQ5050AK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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