Datasheet for LT8391:
- Manufacturer Part Number : LT8391
- Manufacturer : AD
- Description : 60V Synchronous 4-Switch Buck-Boost LED Controller with Spread Spectrum
- Series : LT8391
- Reference Price : USD 2.624
- Our Price : We have a better price, contact us by email
- Product Type : LED Driver IC
- Function : Buck-Boost LED Drivers
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LT8391
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for LT8391. If you need any more information about LT8391, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LT8391 is a synchronous 4-switch buck-boost LED controller that regulates LED current from input voltage above, below, or equal to the output voltage. The proprietary peak-buck peak-boost current mode control scheme allows adjustable and synchronizable 150kHz to 650kHz fixed frequency operation, or internal ±15% triangle spread spectrum operation for low EMI. With 4V to 60V input, 0V to 60V output, and seamless low noise transitions between operation regions, the LT8391 is ideal for LED driver and battery charger applications in automotive, industrial, and battery-powered systems.
The LT8391 provides both internal (up to 128:1) and external (up to 2000:1) LED current PWM dimming with a high-side PMOS switch. Two CTRL pins provide flexible 20:1 analog dimming with ±3% LED current accuracy at 100mV full scale. Fault protection is provided to detect an open or short LED condition, during which the LT8391 retries, latches off, or keeps running.
| Switching Frequency | Max Output Power | |
| LT8391 | Adjustable 150kHz - 650kHz | 450W+ |
| LT8391A | 2MHz | 50W+ |
Applications
- Automotive Head Lamps/Running Lamps
- High Power LED Lighting
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
