L9916-TR - Automotive Alternator Voltage Regulator | STMicroelectronics
MPN: L9916-TR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for L9916-TR 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:
L9916
β Drop-Inβ 99,999 In Stock
$2.2 / Unit
View Datasheet βTLE8888
β Drop-Inπ Reference alternative (not in catalog)
NCV8876
β Drop-Inπ Reference alternative (not in catalog)
L9916-TR Maximum Ratings & Electrical Characteristics
| Output Voltage Range | 13.5 V to 14.5 V |
| Maximum Field Current | 5 A |
| Supply Voltage Range | 8 V to 28 V |
| Quiescent Current | 10 mA |
| Operating Temperature Range | -40Β°C to +150Β°C |
| Package | MultiPowerSO-30 |
| Mounting Type | Surface Mount |
| Load Response Control | Yes |
| Overvoltage Protection | Yes |
| Undervoltage Protection | Yes |
| Thermal Shutdown | Yes |
| Reverse Battery Protection | Yes |
| RoHS Status | Compliant |
| AEC-Q100 Qualified | Yes |
| Process Technology | BCD (Bipolar-CMOS-DMOS) |
L9916-TR Pin Configuration
| Pin 1 | B+ β Battery positive sense |
| Pin 2 | FIELD β Field winding driver output |
| Pin 3 | GND β Ground |
| Pin 4 | LRC β Load response control input |
| Pin 5 | IGN β Ignition switch input |
| Pin 6 | ECU β Engine control unit communication |
| Pin 7 | BAT β Battery supply |
| Pin 8 | SENSE β Voltage sense input |
| Pin 9 | NC β No connect |
| Pin 10 | NC β No connect |
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
L9916-TR is suitable for 6 applications: Passenger Car Alternator, Light Commercial Vehicle Alternator, Heavy-Duty Truck Alternator, Agricultural Equipment Alternator, Construction Equipment Alternator, Marine Alternator.
Passenger Car Alternator
The L9916-TR regulates the alternator output voltage in passenger cars, ensuring stable battery charging and powering electrical loads. Its 5A field current capability supports standard alternators, while load response control improves idle stability. The wide temperature range and AEC-Q100 qualification make it ideal for under-hood use. In a typical application, the L9916-TR is connected between the battery, the alternator field winding, and the ECU, modulating field current to maintain 13.5V-14.5V. The device's protection features safeguard against overvoltage, undervoltage, and thermal faults, ensuring reliable operation over the vehicle's lifetime.
Recommended
Light Commercial Vehicle Alternator
For light commercial vehicles, the L9916-TR provides robust voltage regulation for alternators with higher field current demands. Its 5A output and thermal performance in the MultiPowerSO-30 package handle continuous operation. The device's load response control is particularly beneficial for vehicles with varying electrical loads, such as those with refrigeration units or auxiliary lighting. The L9916-TR's wide supply voltage range accommodates battery voltage fluctuations during cranking and load dump events, ensuring stable operation.
Recommended
Heavy-Duty Truck Alternator
In heavy-duty trucks, the L9916-TR manages alternators that must supply power for multiple electrical systems, including lighting, HVAC, and electronic controls. The device's high field current capability and thermal robustness are essential for sustained high-output operation. The L9916-TR's protection features prevent damage from load dump transients and reverse battery conditions, which are common in commercial vehicle environments. Its AEC-Q100 qualification ensures reliability in demanding applications.
Recommended
Agricultural Equipment Alternator
Agricultural equipment such as tractors and harvesters often operate in harsh conditions with high electrical loads. The L9916-TR provides stable voltage regulation for alternators in these machines, ensuring reliable operation of lights, sensors, and control systems. The device's wide temperature range and robust protection make it suitable for dusty, high-vibration environments. Its load response control helps maintain engine idle stability when operating power-hungry implements.
Recommended
Construction Equipment Alternator
Construction equipment like excavators and loaders require dependable electrical power for hydraulic controls, lighting, and communication systems. The L9916-TR ensures the alternator maintains proper voltage under varying engine speeds and loads. Its high field current capability and thermal management in the MultiPowerSO-30 package support continuous operation in demanding conditions. The device's protection features guard against electrical faults, enhancing overall system reliability.
Recommended
Marine Alternator
In marine applications, the L9916-TR regulates alternator output for boats and yachts, providing stable power for navigation, communication, and onboard electronics. The device's corrosion-resistant packaging and wide temperature range make it suitable for saltwater environments. Its load response control helps manage the varying electrical loads of marine systems, ensuring consistent battery charging and preventing overvoltage damage to sensitive equipment.
Recommended
Recommended Products Summary
Engineering reference data for L9916-TR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | L9916 | TLE8888 | NCV8876 |
|---|---|---|---|---|
| Package | MultiPowerSO-30 | MultiPowerSO-30 | MultiPowerSO-30 | MultiPowerSO-30 |
| Brand | STMicroelectronics | STMicroelectronics | Infineon | onsemi |
| Output Voltage Range | 13.5V to 14.5V | 13.5V to 14.5V | 13.5V to 14.5V | 13.5V to 14.5V |
| Maximum Field Current | 5A | 5A | 5A | 5A |
| Supply Voltage Range | 8V to 28V | 8V to 28V | 8V to 28V | 8V to 28V |
| Operating Temperature Range | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C | -40Β°C to +150Β°C |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
| Load Response Control | Yes | Yes | Yes | Yes |
Key Differentiators
- AEC-Q100 qualified for automotive reliability (vs TLE8888)
- Integrated load response control for idle stability (vs NCV8876)
- Wide supply voltage range of 8V to 28V (vs TLE8888)
Design Notes
The L9916-TR in MultiPowerSO-30 package can dissipate significant power when driving 5A field current. Ensure the exposed pad is soldered to a large copper area on the PCB to keep junction temperature below the maximum rating. For continuous operation at high currents, consider adding thermal vias to improve heat transfer to the ground plane.
Place a freewheeling diode across the field winding to protect the L9916-TR from inductive voltage spikes. Use a Schottky diode with appropriate current rating. Keep the diode close to the field driver output pin. Additionally, place a 100nF ceramic capacitor near the supply pins for high-frequency decoupling.
Do not exceed the maximum supply voltage of 28V, as this can damage the device. Ensure the battery sense line is properly connected to the battery positive terminal to avoid incorrect voltage regulation. Also, verify the ignition input is connected to a switched supply to prevent battery drain when the vehicle is off.
Compliance Information
RoHS compliant and AEC-Q100 qualified per STMicroelectronics product page. Halogen-free status not specified in available data.
