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Analog Devices LT3909 | Demoboard DC2176A
LT3909 - 2-String × 50mA, 2MHz Step-Up LED Driver with ±1.8% Current Matching
Details
| Topologie | Aufwärtswandler |
| Eingangsspannung | 7-36 V |
| Schaltfrequenz | 1880-2120 kHz |
| Ausgang 1 | 35 V / 0.04 A |
| IC-Revision | A |
Beschreibung
Demonstration circuit 2176A features the LT®3909, a2-string × 50mA, 2MHz step-up LED driver with ±1.8%current matching.The LT3909 precisely regulates two LED strings for equalcurrent, supports LED dimming that reduces brightnessdown to a 1/40,000 ratio, protects against faults and alsoreports faults. The LT3909 consists of a step-up converterwith a fixed 2MHz switching frequency and current sourcesfor the LED strings.
Typische Anwendungen
- Automotive Displays
- High Contrast Instrument Clusters
- PDAs, Handheld Computers
- GPS Receivers
Weiterführende Informationen
Artikeldaten
| Artikel Nr. | Datenblatt | Simulation | Downloads | Produktserie | L (µH) | IRP,40K (A) | ISAT1 (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Montageart | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74437324068 | SPEC | 8 Dateien | WE-LHMI SMT Speicherdrossel | 6.8 | 2.35 | 2.4 | 4.75 | 172 | 29 | SMT |
| Artikel Nr. | Datenblatt | Simulation | |
|---|---|---|---|
| 74437324068 | SPEC |
| Muster |
|---|
| Artikel Nr. | Datenblatt | Simulation | Downloads | Produktserie | L (µH) | IRP,40K (A) | ISAT1 (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Montageart | Muster |
|---|