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Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 12-40 V |
| Schaltfrequenz | 50-900 kHz |
| Ausgang 1 | 3.3 V / 10 A |
Beschreibung
The LTC®7801 is a high performance step-down switchingregulator DC/DC controller that drives an all N-channelsynchronous power MOSFET stage that can operate frominput voltages up to 140V. A constant frequency currentmode architecture allows a phase-lockable frequency ofup to 850kHz.
Eigenschaften
Wide VIN Range: 4V to 140V (150V Abs Max)nn Wide Output Voltage Range: 0.8V to 60Vnn Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE)nn Low Operating IQ: 40μA (Shutdown = 10μA)nn 100% Duty Cycle Operationnn No External Bootstrap Diode Requirednn Selectable Gate Drive UVLO Thresholdsnn Onboard LDO or External NMOS LDO for DRVCCnn EXTVCC LDO Powers Drivers from VOUTnn Phase-Lockable Frequency (75kHz to 850kHz)nn Programmable Fixed Frequency (50kHz to 900kHz)nn Selectable Continuous, Pulse-Skipping or Low RippleBurst Mode® Operation at Light Loadsnn Adjustable Burst Clampnn Power Good Output Voltage Monitornn Programmable Input Overvoltage Lockoutnn Small 24-Lead 4mm × 5mm QFN or TSSOP Packages
Typische Anwendungen
- High Voltage Battery Operated Systems
- Automotive and Industrial Power Systems,Telecommunications Power Systems
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | Material | LR(µH) | fres(MHz) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCC SMT-Hochstrominduktivität, 3.3 µH, 15.5 A | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-HCC SMT-Hochstrominduktivität | Induktivität3.3 µH | Performance Nennstrom15.5 A | Sättigungsstrom 119.2 A | Sättigungsstrom @ 30%38.9 A | Gleichstromwiderstand7.7 mΩ | MaterialEisenpulver | Nenninduktivität3.2 µH | Eigenresonanzfrequenz50 MHz |