LED3401x1 r1.0
Single-channel driver
Design Files
PCB Image
BOM
LED3401x1 r1.2
Changes: reduced board size by moving some components to back side, added ripple reduction capacitor across LED output
Design Files
PCB Image
BOM
| Designator |
Quantity |
Description |
Package |
Manufacturer |
Part Number |
Supplier |
| U1 |
1 |
Hysteretic PFET controller for LED |
MSOP 8 |
TI |
LM3401 |
|
| Q1 |
1 |
PFET 30V 25A |
DPAK |
Alpha and Omega |
AOD417 |
|
| D1 |
1 |
Schottky diode 30V 1A |
SOD123 |
NXP |
PMEG3010ER |
|
| L1 |
1 |
Inductor |
5mm square SMD |
|
|
|
| C1 |
1 |
Capacitor MLCC 4.7μF |
1210 |
|
|
|
| C2 |
1 |
Capacitor |
1210 |
|
|
|
| R1 |
1 |
Resistor (current sense) |
0805 |
|
|
|
| R2 |
1 |
Resistor |
0805 |
|
|
|
| R3 |
1 |
Resistor |
0805 |
|
|
|
| R4 |
1 |
Resistor/jumper |
0805 |
|
|
|
LED3401x1 r1.3
Changes: larger diode footprint to accommodate SOD128 package, additional 1206 resistor in parallel with R1. This version is meant to allow higher LED drive currents (up to at least 3A)
Design Files
PCB Image
Schematic
BOM
| Designator |
Quantity |
Description |
Package |
Manufacturer |
Part Number |
Supplier |
| U1 |
1 |
Hysteretic PFET controller for LED |
MSOP 8 |
TI |
LM3401 |
|
| Q1 |
1 |
PFET 30V 25A |
DPAK |
Alpha and Omega |
AOD417 |
|
| D1 |
1 |
Schottky diode 30V 3A |
SOD128 |
NXP |
PMEG3030EP |
|
| L1 |
1 |
Inductor |
5mm square SMD |
|
|
|
| C1 |
1 |
Capacitor MLCC 4.7μF |
1210 |
|
|
|
| R1.1 |
1 |
Resistor (current sense) |
0805 |
|
|
|
| R1.2 |
1 |
Resistor (current sense) |
1206 |
|
|
|
| R2 |
1 |
Resistor |
0805 |
|
|
|
| R3 |
1 |
Resistor |
0805 |
|
|
|
| R4 |
1 |
Resistor/jumper |
0805 |
|
|
|
--
StephenCavilia 21 Mar 2013
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