VND5050K-E - 41A High-Side Driver, 36V | STMicroelectronics
MPN: VND5050K-E β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for VND5050K-E β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
VND5050K-1A-E
β Drop-Inπ Reference alternative (not in catalog)
VND5050KTR-E
β Drop-Inπ Reference alternative (not in catalog)
VND5050K-E
β Drop-Inβ 99,999 In Stock
$1.82 / Unit
View Datasheet βVND5050K-E Maximum Ratings & Electrical Characteristics
| Output Type | High-Side |
| Operating Voltage Range | 4.5 V to 36 V |
| Maximum Output Current | 41 A (current limit) |
| ON-State Resistance | 50 mOhm |
| Standby Current | 0.5 uA |
| Current Sense Ratio | 5000:1 |
| Input Logic Level | 3.3V/5V compatible |
| Protection Features | Overcurrent, Overtemperature, Short-circuit, Load dump |
| Diagnostic Output | Analog current sense + status pin |
| Package | PowerSSO-12 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +150C |
| Thermal Resistance | 40 C/W |
| AEC-Q100 | Qualified |
| RoHS Status | Compliant |
VND5050K-E Pin Configuration
| Pin 1 | IN β Input control (logic level) |
| Pin 2 | GND β Ground |
| Pin 3 | OUT β High-side output to load |
| Pin 4 | OUT β High-side output to load |
| Pin 5 | OUT β High-side output to load |
| Pin 6 | OUT β High-side output to load |
| Pin 7 | OUT β High-side output to load |
| Pin 8 | OUT β High-side output to load |
| Pin 9 | OUT β High-side output to load |
| Pin 10 | OUT β High-side output to load |
| Pin 11 | CS β Current sense output |
| Pin 12 | STATUS β Status output (fault indication) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
VND5050K-E is suitable for 6 applications: Automotive Lighting Control, DC Motor Driving, Solenoid Actuation, Industrial Load Switching, Automotive Body Control Module, LED Lighting Systems.
Automotive Lighting Control
The VND5050K-E is ideal for automotive lighting control, including headlamps, tail lamps, and interior lighting. Its 50 mOhm ON-state resistance minimizes voltage drop, ensuring full brightness. The device's AEC-Q100 qualification and load dump protection make it robust for automotive electrical environments. In a typical application, the high-side driver is placed between the battery rail and the lamp, with the input connected to a microcontroller GPIO. The current sense output allows the ECU to monitor lamp health and detect open or short circuits. The low standby current of 0.5 uA is crucial for reducing battery drain when the vehicle is off. Thermal management is critical: at 20A load, power dissipation is 20W, requiring adequate PCB copper area or a heatsink to keep junction temperature below 150C.
Recommended
DC Motor Driving
The VND5050K-E can drive DC motors up to 20A continuous, making it suitable for automotive fans, pumps, and window lifts. Its built-in overcurrent and overtemperature protection safeguard the motor and driver during stall conditions. In a typical application, the high-side driver switches the motor's positive supply, while a low-side MOSFET or H-bridge handles direction control. The current sense output provides real-time motor current for speed control and fault detection. The low ON-state resistance reduces power loss, improving efficiency. For inductive loads, a freewheeling diode is recommended across the motor to clamp voltage spikes. The device's fast switching capability (rise/fall time of 10 us) supports PWM control up to 20 kHz for speed regulation.
Recommended
Solenoid Actuation
The VND5050K-E is well-suited for driving solenoids in automotive transmission, locking systems, and industrial valves. Solenoids require high inrush current and have inductive characteristics, which the device handles with its 41A current limit and built-in inductive load clamping. In a typical application, the high-side driver energizes the solenoid coil, with a freewheeling diode or the device's internal clamp absorbing the inductive kickback. The current sense output allows precise control of the hold current, reducing power consumption. The device's wide operating voltage range (4.5V to 36V) accommodates both 12V and 24V systems. Thermal considerations are important during continuous operation; the device's thermal shutdown protects against overtemperature, but proper PCB design is essential for reliable long-term operation.
Recommended
Industrial Load Switching
In industrial control systems, the VND5050K-E provides reliable switching of resistive loads such as heaters, lamps, and relays. Its robust protection features (overcurrent, overtemperature, short-circuit) ensure safe operation in harsh environments. The device's analog current sense output enables remote monitoring of load current, facilitating predictive maintenance. In a typical application, the high-side driver is controlled by a PLC or industrial microcontroller, with the input isolated via optocouplers if necessary. The wide operating voltage range supports 24V industrial buses. The low standby current is beneficial for systems that remain powered but idle. The PowerSSO-12 package's exposed pad allows efficient heat transfer to the PCB, enabling operation at high ambient temperatures up to 150C.
Recommended
Automotive Body Control Module
The VND5050K-E is a key component in automotive body control modules (BCMs), which manage lighting, wipers, and other body functions. Its high current capability and diagnostic features allow the BCM to detect and report faults to the vehicle's ECU. In a typical BCM, multiple high-side drivers are used to switch various loads, with the VND5050K-E handling higher-current loads like headlamps. The device's AEC-Q100 qualification ensures reliability over the vehicle's lifetime. The current sense output enables load monitoring for bulb-out detection. The device's low standby current is critical for reducing parasitic drain when the vehicle is off. The PowerSSO-12 package's small footprint saves PCB space, allowing compact BCM designs.
Recommended
LED Lighting Systems
The VND5050K-E can drive high-power LED lighting systems, such as automotive headlamps and industrial floodlights. Its low ON-state resistance minimizes power loss, and its current sense output enables constant-current control when combined with a PWM controller. In a typical application, the high-side driver switches the LED string, with a current-sense resistor and feedback loop regulating LED current. The device's fast switching supports high-frequency PWM dimming without flicker. The wide operating voltage range accommodates various supply voltages. Thermal management is crucial for LED applications; the device's thermal shutdown protects against overtemperature, but proper heatsinking is required for high-power LEDs. The device's AEC-Q100 qualification makes it suitable for automotive LED lighting.
Recommended
Recommended Products Summary
Engineering reference data for VND5050K-E β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | VND5050K-1A-E | VND5050KTR-E | VND5050J-E | VNQ5050K-E | BTS50055-1TMA |
|---|---|---|---|---|---|---|
| Package | PowerSSO-12 | PowerSSO-12 (same) | PowerSSO-12 (same) | PowerSSO-16 (different) | PowerSSO-36 (different) | TO-263 (different) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Infineon |
| Operating Voltage Range | 4.5V to 36V | 4.5V to 36V | 4.5V to 36V | 4.5V to 36V | 4.5V to 36V | 4.5V to 40V |
| Maximum Output Current | 41A (limit) | 41A (limit) | 41A (limit) | 41A (limit) | 41A per channel | 55A (limit) |
| ON-State Resistance | 50 mOhm | 50 mOhm | 50 mOhm | 50 mOhm | 50 mOhm per channel | 55 mOhm |
| Standby Current | 0.5 uA | 0.5 uA | 0.5 uA | 0.5 uA | 2 uA | 1 uA |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Number of Channels | 1 | 1 | 1 | 1 | 4 | 1 |
Key Differentiators
- Lowest ON-state resistance in its class (vs BTS50055-1TMA)
- Ultra-low standby current (vs VNQ5050K-E)
- Single-channel simplicity (vs VNQ5050K-E)
Design Notes
At 20A load, power dissipation is I^2*R = 20^2 * 0.05 = 20W. The PowerSSO-12 package has a thermal resistance of 40 C/W (theta_JA), resulting in a temperature rise of 800C without proper cooling. A heatsink or large copper area (at least 2 square inches) is required for continuous operation above 5A. Use thermal vias to transfer heat to the PCB ground plane.
Place the input and output capacitors close to the device pins. Use a 100nF ceramic capacitor on the input and a 10uF electrolytic capacitor on the output for stability. The current sense pin (CS) requires a sense resistor (typically 1kOhm) to ground; place it close to the device to minimize noise. The status pin (STATUS) should have a pull-up resistor to the logic supply.
Do not exceed the absolute maximum voltage of 36V on the input. Ensure the load is connected to the output pin; a short to ground will trigger overcurrent protection. The input pin is not 5V tolerant if the supply is above 5V; use a level shifter if necessary. The current sense output is only valid when the device is ON; it is high-impedance when OFF.
Compliance Information
RoHS compliant per STMicroelectronics product page. AEC-Q100 qualified for automotive applications.
