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ANALOG DEVICES LT8391IUFD#PBF
LED Driver, DC / DC, Synchronous Buck-Boost, 650 kHz, QFN-EP-28, 4 to 60 V, -40 to 150°C, SMD
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LT8391IUFD#PBF
- Order Code:
- 4018453
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- Technical Datasheet:
- LT8391IUFD#PBF Datasheet
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Product Information
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- Synchronous Buck-Boost
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- -
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- 4V
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- 60V
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- 60V
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- -
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- 650kHz
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- Surface Mount
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- QFN-EP
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- 28Pins
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- -40°C
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- 150°C
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- -
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- -
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- MSL 1 - Unlimited
Technical Documents (1)
Product Overview
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. It provides both internal (up to 128:1) and external (up to 2000:1) LED current PWM dimming with a high side PMOS switch. Fault protection is provided to detect an open or short LED condition, during which the LT8391 retries, latches off, or keeps running. Applications include automotive head lamps/running lamps, high power LED lighting.
- 4-switch single inductor architecture allows VIN above, below or equal to VOUT
- Synchronous switching up to 98% efficiency
- Proprietary peak-buck peak-boost current mode
- Wide VIN range from 4V to 60V, wide VOUT range from 0V to 60V (51V LED)
- ±3% LED current accuracy, 2000:1 external and 128:1 internal PWM dimming
- High side PMOS PWM switch driver, integrated bootstrap diodes
- No top MOSFET refresh noise in buck or boost
- Adjustable and synchronizable from 150KHz to 650KHz
- Flicker-free spread spectrum for low EMI, open and short LED protection with fault reporting
- 28-lead plastic QFN package, -40°C to 125°C temperature range
Footnotes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
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252 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays)
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Extra stock is available upon order to the Supplier Lead Time which is approximately 4/7/25
252 deliver in 3-4 business days from our UK warehouse
Due to market conditions delivery times are for general guidance only and may be subject to change at short notice
¥1,817.98
(
¥1,999.78
Inc. JCT)
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| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
|---|---|---|
| 1+ | ¥1,817.98 (¥1,999.78) | ( ) |
| 10+ | ¥1,274.01 (¥1,401.41) | ( ) |
| 73+ | ¥1,134.09 (¥1,247.50) | ( ) |
| 146+ | ¥977.56 (¥1,075.32) | ( ) |
| 292+ | ¥901.76 (¥991.94) | ( ) |
| 511+ | ¥855.59 (¥941.15) | ( ) |
| 1022+ | ¥843.61 (¥927.97) | ( ) |
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