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Analog Devices LT3799EMSE-1 | Demoboard DC1816B
LT3799EMSE-1 Demo Board I Offline Isolated Flyback LED Driver with PFC – 90-305VAC input to 36Vout (nom) @ 3A
Overview
| Topology | Flyback Converter |
| Input voltage | 90-305 V |
| Output 1 | 36 V / 3 A |
| IC revision | 1 |
Description
Demonstration circuit 1816B is an off-line isolated flyback LED driver featuring LT®3799-1. The demo board provides a single constant current output of 3A over an LED string voltage from 22V to 38V. It is optimized to operate over a wide AC input voltage range (90VAC to 305VAC, 47Hzto 63Hz). LED current typically stays within ±5% over the whole input voltage range. It provides a high power factor (>0.9) enabling a single design to be used worldwide. It is also designed to comply with the IEC 61000-3-2 ClassC harmonics standard and the EN55015B conducted EMI standard.
The LT3799-1 controls an isolated flyback converter in boundary mode. Its novel current sensing scheme delivers a well-regulated output current to the secondary side without using an opto-coupler. Open- and shorted-LEDprotection ensures long term reliability.
The LT3799-1 is available in a low profile, thermallyenhanced 16-lead MSOP package.
The LT3799-1 data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this quick start guide for demo circuit 1816B.
Features
Remarks:L1=10mH L2=10mH L3=150uHAnd Transformer T1 UsedRefer page no.7
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | RDC 1 (Ω) | RDC 2 (Ω) | RDC 3 (Ω) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | L (µH) | IR (A) | RDC max. (Ω) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750811351 | SPEC | 8 files | WE-OLLT Offline Flyback Transformers | 85 - 265 V (AC) | 36 | 3 | 25 | 0.135 | 0.027 | 0.055 | 75 | 4:1:0.67 | 7.4 | 4500 | 39.6 | 43.18 | 30.48 | THT | ETD34 | 180 | – | – | ||
 | 7447018 | SPEC | – | 6 files | WE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | – | – | – | 16.5 | 10.7 | – | THT | – | 150 | 2.5 | 0.1 |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | RDC 1 (Ω) | RDC 2 (Ω) | RDC 3 (Ω) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | L (µH) | IR (A) | RDC max. (Ω) | Samples |
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