LT3755EMSE-2#TRPBF
ActiveLED DRIVER, DC / DC, BUCK-BOOST, 1 MHZ, MSOP-EP-16, 4.5 TO 40 V, -40 TO 125°C, SMD
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LT3755EMSE-2#TRPBF
ActiveLED DRIVER, DC / DC, BUCK-BOOST, 1 MHZ, MSOP-EP-16, 4.5 TO 40 V, -40 TO 125°C, SMD
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Technical Specifications
Parameters and characteristics for this part
| Specification | LT3755EMSE-2#TRPBF |
|---|---|
| Dimming | Analog, PWM |
| Frequency [Max] | 1 MHz |
| Frequency [Min] | 100 kHz |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | Exposed Pad, 16-TFSOP |
| Package / Case | 3 mm, 0.118 in |
| Supplier Device Package | 16-MSOP-EP |
| Topology | SEPIC, Step-Up (Boost), Flyback, Step-Down (Buck) |
| Type | DC DC Controller |
| Voltage - Supply (Max) [Max] | 40 V |
| Voltage - Supply (Min) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 10.70 | |
| 10 | $ 7.47 | |||
| 25 | $ 6.64 | |||
| 100 | $ 5.71 | |||
| 250 | $ 5.26 | |||
| 500 | $ 4.98 | |||
| 1000 | $ 4.75 | |||
| Digi-Reel® | 1 | $ 10.70 | ||
| 10 | $ 7.47 | |||
| 25 | $ 6.64 | |||
| 100 | $ 5.71 | |||
| 250 | $ 5.26 | |||
| 500 | $ 4.98 | |||
| 1000 | $ 4.75 | |||
| Tape & Reel (TR) | 2500 | $ 4.70 | ||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 9.03 | |
| 10 | $ 6.93 | |||
| 25 | $ 6.08 | |||
| 50 | $ 5.60 | |||
| 100 | $ 5.12 | |||
| 250 | $ 4.83 | |||
Description
General part information
LT3755LT3755-1LT3755-2 Series
The LT3755, 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.ApplicationsHigh Power LEDBattery ChargersAccurate Current Limited Voltage Regulators
Documents
Technical documentation and resources