LT3755EUD#TRPBF LED Lighting Drivers 75V Full-Featured LED Controller
♠ Product Description
| Product Attribute | Attribute Value |
| Manufacturer: | Analog Devices Inc. |
| Product Category: | LED Lighting Drivers |
| Series: | LT3755 |
| Mounting Style: | SMD/SMT |
| Package / Case: | QFN-16 |
| Number of Outputs: | 1 Output |
| Output Current: | 10 A |
| Input Voltage, Min: | 4.5 V |
| Input Voltage, Max: | 40 V |
| Topology: | Boost, Buck, Buck-Boost, Flyback, SEPIC |
| Operating Frequency: | 100 kHz to 1 MHz |
| Output Voltage: | Adjustable |
| Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 125 C |
| Packaging: | Reel |
| Packaging: | Cut Tape |
| Packaging: | MouseReel |
| Features: | PWM Dimming, Open LED Protection |
| Brand: | Analog Devices |
| Input Voltage: | 4.5 V to 40 V |
| Number of Channels: | 1 Channel |
| Product Type: | LED Lighting Drivers |
| Factory Pack Quantity: | 2500 |
| Subcategory: | Driver ICs |
| Supply Current - Max: | 1.7 mA |
♠ 40VIN, 75VOUT LED Controllers
The LT®3755, LT3755-1 and LT3755-2 are DC/DC controllers designed to operate as a constant-current source for driving high current LEDs. They drive a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. A ground referenced voltage FB pin serves as the input for several LED protection features, and also makes it possible for the converter to operate as a constant-voltage source. A frequency adjust pin allows the user to program the frequency from 100kHz to 1MHz to optimize efficiency, performance or external component size.
The LT3755/LT3755-1/LT3755-2 sense output current at the high side of the LED string. High side current sensing is the most flexible scheme for driving LEDs, allowing boost, buck mode or buck-boost mode configuration. The PWM input provides LED dimming ratios of up to 3000:1, and the CTRL input provides additional analog dimming capability.
• 3000:1 True Color PWM™ Dimming
• Wide Input Voltage Range: 4.5V to 40V
• Output Voltage Up to 75V
• Constant-Current and Constant-Voltage Regulation
• 100mV High Side Current Sense
• Drives LEDs in Boost, Buck Mode, Buck-Boost Mode, SEPIC or Flyback Topology
• Adjustable Frequency: 100kHz to 1MHz
• Open LED Protection
• Programmable Undervoltage Lockout with Hysteresis
• Improved Open LED Status Pin (LT3755-2)
• Frequency Synchronization (LT3755-1)
• PWM Disconnect Switch Driver
• CTRL Pin Provides Analog Dimming
• Low Shutdown Current: <1µA
• Programmable Soft-Start
• Thermally Enhanced 16-Lead QFN (3mm × 3mm) and MSOP Packages
• AEC-Q100 Qualified For Automotive Applications
• High Power LED
• Battery Chargers
• Accurate Current Limited Voltage Regulators
