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Analog Devices LTC3372 | Demoboard DC2419A
4-Channel 8A Configurable Buck Plus Low IQ High Voltage Buck Supply
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 2.25-5.5 V |
| Schaltfrequenz | 1000-3000 kHz |
| Ausgang 1 | 1.2 V / 2 A |
Beschreibung
Demonstration circuit 2419A features the LTC®3372 in a multi-output step-down converter. The controller portion of the LTC3372 drives a high output voltage (HV) buck converter which has an input voltage range of 6V to 60V.Its output voltage (VOUT_HV) is nominally 5V but can be configured for either 5V or 3.3V with the VOUTPRG pin. VOUT_HV supplies power to the configurable buck regulator. This regulator provides four low voltage (LV) outputs labelled VOUT1-4. These outputs are 1.2V/2A, 1.8V/2A, 2.5V/2A and 3.3V/2A respectively. When VOUT_HV is configured for 5V, it can supply 6A to the external loads with full load on VOUT1-4. With no load on VOUT1-4, VOUT_HV can supply 10A to the external loads. See Figure 3 for the Block Diagram.
Eigenschaften
- Selectable light load operating modes of:
- FCM
- Pulse-skipping (HV) and Burst Mode operation (LV)
- Burst Mode operation
- PLLIN pin to synchronize the LV regulators over a 1MHz to 3MHz range (166kHz to 500kHz for the HV converter)
- Watch dog circuit
- TEMP pin to monitor the junction temperature of the LTC3372
- PGOOD pin for the HV converter and RST pin for the LV regulators
Typische Anwendungen
- General Purpose Multi-Channel Power Supplies
- Automotive and Industrial Always-On Systems
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | f(mm) | λDom typ.(nm) | Emittierte Farbe | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chiptechnologie | 2θ50% typ.(°) | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | Pins | Typ | Montageart | L(mm) | H(mm) | IR(A) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, –, 625 nm | Downloads27 Dateien Strahldaten
| Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWL-SMCW SMT Mono-color Chip LED Waterclear | – | dominante Wellenlänge [typ.]625 nm | Emittierte FarbeRot | Spitzen-Wellenlänge [typ.]630 nm | Lichtstärke [typ.]250 mcd | Durchlassspannung [typ.]2 V | ChiptechnologieAlInGaP | Abstrahlwinkel Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | MontageartSMT | Länge1.6 mm | Höhe0.7 mm | – | – | Betriebstemperatur -40 °C up to +85 °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 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Länge9.5 mm | – | – | – | Betriebstemperatur -30 °C up to +85 °C | |||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins2 | – | – | – | – | Nennstrom3 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -25 °C up to +105 °C | |||
 | WR-PHD Stiftleisten, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins3 | TypGerade | MontageartTHT | Länge6 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C | |||
 | WR-PHD Stiftleisten, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins4 | TypGerade | MontageartTHT | Länge8 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C | |||
 | WE-MAPI SMT-Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MAPI SMT-Speicherdrossel | – | – | – | – | – | – | – | – | Induktivität1 µH | Performance Nennstrom10.25 A | Sättigungsstrom @ 30%12.5 A | Gleichstromwiderstand11.6 mΩ | Eigenresonanzfrequenz59 MHz | Betriebsspannung80 V | Pins2 | – | MontageartSMT | Länge4.3 mm | Höhe3.1 mm | Nennstrom7.4 A | – | Betriebstemperatur -40 °C up to +125 °C |