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Linear Technology/Analog Devices LT8391 Controllers are 4-switch synchronous, buck-boost LED controllers. The controllers regulate output voltage, input or output current from an input voltage above, below, or equal to the output voltage. The peak-buck/peak-boost current mode control scheme enables adjustable and synchronizable 150kHz to 650kHz fixed frequency operation. The control scheme also allows internal ±15% triangle spread spectrum frequency modulation for low EMI.
The LT8391 Controllers offer 4V to 60V input, 0V to 60V output voltage capability, and seamless low-noise transitions between operation regions The controllers are ideal for LED driver and battery and charger applications in automotive, industrial, telecom, and even battery-powered systems.
Features
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)
Applications
Automotive Head Lamps/Running Lamps
High Power LED Lighting
LT8391EFE#PBF
LT8391IUFD#PBF
LT8391IFE#PBF
LT8391HFE#PBF
LT8391HUFD#PBF
LT8391EUFD#PBF
LT8391EFE#TRPBF
LT8391IUFD#TRPBF
LT8391IFE#TRPBF
LT8391HUFD#TRPBF
LT8391HFE#TRPBF
LT8391EUFD#TRPBF
LT8391
LT8391EFE#PBF 制造商: Analog Devices Inc.
產品種類: LED照明驅動器
RoHS: 詳細信息
系列: LT8391
輸入電壓: 4 V to 60 V
工作頻率: 150 kHz to 650 kHz
電源電流—最大值: 2.8 mA
輸出電流: 10 A
最小工作溫度: - 40 C
最大工作溫度: + 125 C
安裝風格: SMD/SMT
封裝 / 箱體: TSSOP-28
輸出端數量: 1 Output
產品: LED Controllers
類型: Buck-Boost LED Drivers
商標: Analog Devices / Linear Technology
拓撲結構: Buck-Boost
工廠包裝數量: 50
單位重量: 107 mg
