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ADI LT8391HUFD#PBF product image
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ADI LT8391HUFD#PBF

Manufacturer
ADI
MPN
LT8391HUFD#PBF
LCSC Part #
C673830
Packaging
QFN-28-EP(4x5)
Customer #
Key Attributes
150kHz~650kHz 1 DC-DC 60V 4V~60V QFN-28-EP(4x5) LED Drivers RoHS
Datasheetpdf iconADI LT8391HUFD#PBF
RoHS Compliance1 documents available
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QtyUnit Price(Reference Only)Total Amount
1+$ 7.0661$ 7.07
200+$ 2.7351$ 547.02
500+$ 2.6394$ 1319.70
1,000+$ 2.5915$ 2591.50
Standard Packaging73/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/LED Drivers
ManufacturerADI
PackagingQFN-28-EP(4x5)
Operating Temperature-40℃~+150℃
Frequency - Switching150kHz~650kHz
DimmingPWM;Analog
Number of Channels1
TypeDC-DC
FeaturesBuilt-in soft-start;Short Circuit Protection;LED open-circuit protection;Over-Temperature Protection (OTP);Remove stroboscopic effect
Output Voltage60V
TopologyBuck-Boost
Voltage - Input(DC)4V~60V
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Introduction

AI Translation

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.

Features

AI Translation
  • 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: 4V to 60V
  • Wide VOUT Range: 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: 150kHz to 650kHz
  • Flicker-Free Spread Spectrum for Low EMI
  • Open and Short LED Protection with Fault Reporting
  • Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm×5mm)
  • AEC-Q100 Qualified for Automotive Applications

Applications

AI Translation
  • Automotive Head Lamps/Running Lamps
  • High Power LED Lighting