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Analog Devices LTC7897
140V, Low IQ, Synchronous Buck Controller with Programmable 5V to 10V Gate Drive
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 4-135 V |
| Schaltfrequenz | 100-2500 kHz |
| Ausgang 1 | 135 V / 20 A |
Beschreibung
The LTC®7897 is a high performance, 100% duty cycle capable, synchronous step-down, DC/DC switching regulator controller that drives all N-channel synchronous silicon metal oxide field effect transistor (MOSFET) power stages. Synchronous rectification increases efficiency, reduces power loss, and simplifies the application design by reducing thermal requirements.
Eigenschaften
Wide VIN Range: 4V to 135V (140V ABS MAX)Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 135V (140V ABS MAX)Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE, 15V ABS MAX)Adjustable Driver Voltage UVLOAdaptive or Resistor Adjustable Dead TimesSplit-Output Gate Drivers for Adjustable Turn-On and Turn-Off Driver Strengths100% Duty Cycle OperationLow Operating IQ: 5μA (48V<IN to 3.3VOUT)Spread Spectrum Frequency ModulationProgrammable Frequency (100kHz to 2.5MHz);Synchronizable Frequency (100kHz to 2.5MHz);28-Pin (4mm x 5mm) QFN Package
Typische Anwendungen
Weiterführende Informationen
Artikeldaten
| Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Drahttype | C | VR (V (DC)) | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | DF (%) | Raster (mm) | Ø D (mm) | L (mm) | Verpackung | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443640470 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-HCF SMT-Hochstrominduktivität | 4.7 | 34.95 | 70 | 78 | 2.64 | 20 | Flach | – | – | – | – | – | – | – | – | 27 | – | ||
| 7443630550 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-HCF SMT-Hochstrominduktivität | 5.5 | 23.35 | 30 | 33 | 4.4 | 21 | Flach | – | – | – | – | – | – | – | – | 20.8 | – | ||
| 7443630700 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-HCF SMT-Hochstrominduktivität | 7 | 19.5 | 27 | 30 | 6.17 | 18 | Flach | – | – | – | – | – | – | – | – | 20.8 | – | ||
| 7443641000 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-HCF SMT-Hochstrominduktivität | 10 | 34.95 | 32.6 | 37 | 2.64 | 13 | Flach | – | – | – | – | – | – | – | – | 27 | – | ||
| 7443631500 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-HCF SMT-Hochstrominduktivität | 15 | 15.4 | 19 | 21 | 9.57 | 12.8 | Flach | – | – | – | – | – | – | – | – | 20.8 | – | ||
| 7443642200 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-HCF SMT-Hochstrominduktivität | 22 | 34.95 | 15.5 | 18 | 2.64 | 9 | Flach | – | – | – | – | – | – | – | – | 27 | – | ||
 | 860241078002 | SPEC | 7 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WCAP-AT1H Aluminium-Elektrolytkondensatoren | – | – | – | – | – | – | – | 47 µF | 200 | 10000 | 980 | 476 | 15 | 5 | 13 | 20 | Ammopack |
| Artikel Nr. | Datenblatt | Simulation | |
|---|---|---|---|
| 7443640470 | SPEC | |
| 7443630550 | SPEC | |
| 7443630700 | SPEC | |
| 7443641000 | SPEC | |
| 7443631500 | SPEC | |
| 7443642200 | SPEC | |
| 860241078002 | SPEC |
| Muster |
|---|
| Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Drahttype | C | VR (V (DC)) | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | DF (%) | Raster (mm) | Ø D (mm) | L (mm) | Verpackung | Muster |
|---|
