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Details
| Topologie | Aufwärtswandler |
| Eingangsspannung | 8-20 V |
| Schaltfrequenz | 300-3000 kHz |
| Ausgang 1 | 24 V / 1.5 A |
Beschreibung
The LT8336 is a low IQ, synchronous step-up DC/DC converter. It features Silent Switcher architecture and optional spread spectrum frequency modulation to minimize EMI emissions while delivering high efficiencies at high switching frequencies.The wide input/output voltage range, low VIN pin quiescent current in Burst Mode operation, and 100% duty cycle capability for the synchronous MOSFET in passthrough operation (VIN ≥ VOUT), make the LT8336 ideally suited for general purpose step-up and automotive preboost applications.The LT8336 integrates 40V, 2.5A power switches, operating at a fixed switching frequency programmable between 300kHz and 3MHz and synchronizable to an external clock. Pulse-skipping or Burst Mode operation can be selected, with or without spread-spectrum frequency modulation, to optimize efficiency and EMI performance.The LT8336 features output soft-start, an output power good flag and output overvoltage lockout.
Eigenschaften
- Silent Switcher® Architecture
- Ultralow EMI Emissions
- Optional Spread Spectrum Frequency Modulation
- Integrated 40V, 2.5A Power Switches
- Wide Input/Output Voltage Range: 2.7V to 40V
- Low VIN Pin Quiescent Current:
- 0.3µA in Shutdown
- 4µA in Burst Mode® Operation
- 15µA in Pass Through (VIN > VOUT)
- 100% Duty Cycle Capability for Synchronous MOSFET
- Adjustable and Synchronizable: 300kHz to 3MHz
- Pulse-Skipping or Burst Mode Operation at Light Load
- Output Soft-Start and Power Good Monitor
- Internal Compensation
- Accurate 1V Enable Pin Threshold
- Small 16-Lead (3mm × 3mm) LQFN Package
- AEC-Q100 Qualification in Progress
Typische Anwendungen
- Automotive and Industrial Power Supplies / General Purpose Step-Up
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | f(mm) | L(µH) | ISAT1(A) | ISAT2(A) | fres(MHz) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | VOP(V) | Z @ 100 MHz(Ω) | Zmax(Ω) | Testbedingung Zmax | IR 2(mA) | RDC max.(Ω) | Typ | Pins | Montageart | L(mm) | H(µm) | IR(mA) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-CBF SMT-Ferrit, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-CBF SMT-Ferrit | – | – | – | – | – | – | – | – | – | Impedanz @ 100 MHz600 Ω | Maximale Impedanz700 Ω | Maximale Impedanz150 MHz | Nennstrom 22000 mA | Gleichstromwiderstand0.15 Ω | TypHochstrom | – | MontageartSMT | Länge2 mm | Höhe0.9 µm | Nennstrom1500 mA | – | Betriebstemperatur -55 °C up to +125 °C | ||||
 | WR-PHD Stiftleisten, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypGerade | Pins10 | MontageartTHT | Länge10 mm | – | Nennstrom2000 mA | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C | |||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWA-SNSR Self-Retaining Spacer | Bohrung in Blende4.8 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Länge11.1 mm | – | – | – | Betriebstemperatur -30 °C up to +85 °C | |||
 | WE-PMCI Power Molded Chip Induktivität, –, 0.47 µH | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-PMCI Power Molded Chip Induktivität | – | Induktivität0.47 µH | Sättigungsstrom 15.15 A | Sättigungsstrom 29.95 A | Eigenresonanzfrequenz90 MHz | Performance Nennstrom7.1 A | Sättigungsstrom @ 30%9.95 A | Gleichstromwiderstand18 mΩ | – | – | – | – | Nennstrom 23600 mA | Gleichstromwiderstand0.022 Ω | – | Pins2 | MontageartSMT | Länge3.2 mm | Höhe1200 µm | Nennstrom7100 mA | – | Betriebstemperatur -40 °C up to +125 °C | ||||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins2 | – | – | – | Nennstrom3000 mA | Arbeitsspannung200 V (AC) | Betriebstemperatur -25 °C up to +105 °C | |||
 | WE-MAPI SMT-Speicherdrossel, –, 6.8 µH | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MAPI SMT-Speicherdrossel | – | Induktivität6.8 µH | – | – | Eigenresonanzfrequenz19.5 MHz | Performance Nennstrom3.75 A | Sättigungsstrom @ 30%7.2 A | Gleichstromwiderstand69.4 mΩ | Betriebsspannung80 V | – | – | – | – | Gleichstromwiderstand0.074 Ω | – | Pins2 | MontageartSMT | Länge4.3 mm | Höhe3100 µm | Nennstrom3000 mA | – | Betriebstemperatur -40 °C up to +125 °C |