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Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 90-265 V |
| Ausgang 1 | 19.5 V / 3.33 A |
| IC-Revision | D |
Beschreibung
The LM5023 is a Quasi-Resonant Pulse Width Modulated (PWM) controller which contains all of the features needed to implement a highly efficient off-line power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure Critical Conduction Mode (CCM) operation. The LM5023 features a hiccup mode for over current protection with an auto restart to reduce the stress on the power components during an overload. A skip cycle mode which reduces power consumption at light loads for energy conservation applications (ENERGY STAR®, CEPCP, etc.). The LM5023 also uses the transformer auxiliary winding for output overvoltage (OVP) protection, if an OVP fault is detected the LM5023 latches off the controller.
Eigenschaften
- Critical Conduction Mode
- Peak Current Mode Control Mode
- Skip Cycle Mode for Low Standby Power
- Hiccup Mode for Continuous Overload Protection
- Cycle-by-Cycle Over-Current Protection MaintainsAccuracy over the Universal AC Line
- Line Current Feed Forward
- OVP Protection by Sensing the Aux Winding
- Integrated 0.7 A Peak Gate Driver
- Direct Opto-Coupler Interface
- Leading Edge Blanking of Current Sense Signal
- Maximum Frequency Clamp 130 kHz
- Programmable Soft Start
- Thermal Shutdown
- 8-Pin MSOP Package
Typische Anwendungen
- Consumer Electronics
- Universal Input AC-DC Notebook Adapters 10 W to 65 W
- High Efficiency Housekeeping and Auxiliary Power
- Battery Chargers
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | IR(A) | L(µH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | B(mm) | H(mm) | Montageart | L1(µH) | L2(µH) | IR 1(A) | IR 2(A) | ISAT 1(A) | RDC1 typ(Ω) | RDC2 typ(Ω) | RDC1 max(Ω) | RDC2 max(Ω) | fres(MHz) | Typ | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT-Hochstrominduktivität, 23.8 A, 7 A | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-HCI SMT-Hochstrominduktivität | Performance Nennstrom23.8 A | Sättigungsstrom 17 A | Sättigungsstrom @ 30%17 A | Gleichstromwiderstand3.7 mΩ | – | Induktivität2.3 µH | Gleichstromwiderstand3.96 mΩ | – | – | MaterialWE-PERM | Länge13 mm | Breite12.8 mm | Höhe4.7 mm | MontageartSMT | – | – | – | – | – | – | – | – | – | Eigenresonanzfrequenz40 MHz | – | ||||
 | WE-CMB Stromkompensierte Netzdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-CMB Stromkompensierte Netzdrossel | – | – | – | – | Nennstrom12 A | Induktivität1000 µH | Gleichstromwiderstand9 mΩ | Nennspannung250 V (AC) | Prüfspannung1500 V (AC) | MaterialMnZn | Länge31 mm | Breite22 mm | Höhe35 mm | MontageartTHT | – | – | – | – | – | – | – | – | – | – | – | ||||
 | WE-DD SMT-Doppeldrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-DD SMT-Doppeldrossel | – | – | – | – | Nennstrom1 A | Induktivität10 µH | Gleichstromwiderstand150 mΩ | – | – | – | Länge7.3 mm | Breite7.3 mm | Höhe4 mm | – | Induktivität 110 µH | Induktivität 210 µH | Nennstrom 11 A | Nennstrom 21 A | Sättigungsstrom [1]2 A | Gleichstromwiderstand 10.125 Ω | Gleichstromwiderstand 20.125 Ω | Gleichstromwiderstand 10.15 Ω | Gleichstromwiderstand 20.15 Ω | Eigenresonanzfrequenz30 MHz | TypGerade | ||||
 | 750315092 | Offline Transformer, –, – | Downloads5 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | Produktserie Offline Transformer | – | – | – | – | – | Induktivität200 µH | – | – | Prüfspannung2000 V (AC) | – | Länge32.4 mm | Breite40 mm | Höhe20.5 mm | MontageartTHT | Induktivität 1200 µH | – | – | – | Sättigungsstrom [1]3.2 A | – | – | – | – | – | – |