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Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 4-58 V |
| Schaltfrequenz | 320-2250 kHz |
| Ausgang 1 | 3.3 V / 15 A |
Beschreibung
The LTC®7800 is a high performance step-down switchingregulator DC/DC controller that drives an all N-channelsynchronous power MOSFET stage. A constant frequencycurrent mode architecture allows a phase-lockablefrequency of up to 2.25MHz.
Eigenschaften
Wide VIN Range: 4V to 60V (65V Abs Max)n Low Operating IQ: 50μAn Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24Vn RSENSE or DCR Current Sensingn Phase-Lockable Frequency (320kHz to 2.25MHz)n Programmable Fixed Frequency (320kHz to2.25MHz)n Selectable Continuous, Pulse-Skipping or Low RippleBurst Mode® Operation at Light Loadn Selectable Current Limitn Very Low Dropout Operation: 98% Duty Cyclen Adjustable Output Voltage Soft-Start or Trackingn Power Good Output Voltage Monitorn Output Overvoltage Protectionn Low Shutdown IQ: < 14μAn Internal LDO Powers Gate Drive from VIN or EXTVCCn No Current Foldback During Start-Upn Small 20-Pin 3mm × 4mm QFN Package
Typische Anwendungen
- Battery Powered Digital Devices,Distributed DC Power Systems
- Automotive Always-On Systems
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, 1.3 µH, 32.1 A | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-HCI SMT-Hochstrominduktivität | Induktivität1.3 µH | Performance Nennstrom32.1 A | Sättigungsstrom 111 A | Sättigungsstrom @ 30%25 A | Gleichstromwiderstand1.8 mΩ | Eigenresonanzfrequenz59 MHz | MaterialWE-PERM |