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Texas Instruments LM5175 | Demoboard PMP10592
LED PWM Dimming Reference Design Using High Efficiency Buck-Boost Converter
Details
| Topologie | Abwärts- und Aufwärtswandler |
| Eingangsspannung | 4.5-42 V |
| Ausgang 1 | 1.1 A |
| IC-Revision | A |
Beschreibung
The reference design contains a complete LM5175 based buck-boost converter and a driver and FET for PWM dimming. This design has been optimized for the 12-V automotive supply rail with support for cold-crank profile based on ISO 7637-2 pulse 4. The design provides 1.1-A constant current output to a string of 8 LEDs.
Eigenschaften
- Wide VIN 4.5V-42V
- Drive 8 LEDs in series
- 1-A constant current loop
- PWM dimming driver/fet
- 0-100% PWM dimming range
- Meets ISO 7637-2 Pulse 4 (cold-crank)
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT-Hochstrominduktivität, 15 µH, 14.1 A | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-HCI SMT-Hochstrominduktivität | Induktivität15 µH | Performance Nennstrom14.1 A | Sättigungsstrom 110.75 A | Sättigungsstrom @ 30%14 A | Gleichstromwiderstand9 mΩ | Eigenresonanzfrequenz14 MHz | MaterialMnZn |