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Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 3-5.5 V |
| Ausgang 1 | 0.8 V / 5 A |
| IC-Revision | 0.1 |
Beschreibung
The LX7178 is a digitally controlled step-down regulator IC with an integrated 40mΩ high-side P-channel MOSFET and a 14mΩ low-side N-channel MOSFET. It features Microsemi’s proprietary constant-frequency hysteretic control engine for near-instantaneous correction to line/load transients. It does not require high-ESR output capacitors and incorporates energy-saving “PSM” (Power Save or Pulse Skip Mode) at light loads, to extend battery life in mobile applications.The LX7178 has an I2C serial interface port for output voltage margining and monitoring if required (it can also operate in default mode). In addition, it includes robust fault monitoring functions.The LX7178 will operate from 3V to 5.5V, and is available in a fixed output voltage option of 0.8V (no voltage divider is necessary). The output voltage can also be adjusted with an external voltage divider up to 3.3V.
Eigenschaften
- Constant Frequency Hysteretic Control
- Extremely Fast Line/Load Transient Response
- I2C for Output Adjustment (3.4Mbps)
- 1.875MHz Switching Frequency
- Extremely Low-RDSON MOSFETS
- Input Voltage Rail 3.3V to 5V, Current 5A
- I2C Selectable Power Save Mode for Light-Load Efficiency
- UVLO, OVP, OCP
- 0°C to +85°C Ambient Temperature
- Available in WLCSP-20 (0.4mm pitch)
- RoHS Compliant
Typische Anwendungen
- Tablets/Slates
- High Performance HDD/Notebook/Netbook
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | C | Tol. C | VR(V (DC)) | Bauform | Betriebstemperatur | DF(%) | RISO | Keramiktyp | L(mm) | B(mm) | H(mm) | Fl(mm) | Verpackung | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Montageart | Endurance(h) | IRIPPLE(mA) | RESR(mΩ) | ILeak(µA) | Raster(mm) | Ø D(mm) | Pins | Typ | IR(A) | Arbeitsspannung(V (AC)) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 10 V(DC), 1 µF, ±10% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 10 V(DC) | Kapazität1 µF | Kapazität±10% | Nennspannung10 V (DC) | Bauform0805 | Betriebstemperatur -55 °C up to +125 °C | Verlustfaktor5 % | Isolationswiderstand0.5 GΩ | KeramiktypX7R Klasse II | Länge2 mm | Breite1.25 mm | Höhe1.25 mm | Pad Dimension0.5 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 6.3 V(DC), 22 µF, ±20% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 6.3 V(DC) | Kapazität22 µF | Kapazität±20% | Nennspannung6.3 V (DC) | Bauform0805 | Betriebstemperatur -55 °C up to +85 °C | Verlustfaktor15 % | Isolationswiderstand0.005 GΩ | KeramiktypX5R Klasse II | Länge2 mm | Breite1.25 mm | Höhe1.25 mm | Pad Dimension0.5 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 10 V(DC), 22 µF, ±20% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 10 V(DC) | Kapazität22 µF | Kapazität±20% | Nennspannung10 V (DC) | Bauform0805 | Betriebstemperatur -55 °C up to +85 °C | Verlustfaktor10 % | Isolationswiderstand0.005 GΩ | KeramiktypX5R Klasse II | Länge2 mm | Breite1.25 mm | Höhe1.25 mm | Pad Dimension0.5 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
 | WCAP-PTHR Aluminium-Polymer-Kondensatoren, 47 µF, ±20% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-PTHR Aluminium-Polymer-Kondensatoren | Kapazität47 µF | Kapazität±20% | Nennspannung35 V (DC) | – | – | Verlustfaktor12 % | – | – | Länge11.5 mm | – | – | – | VerpackungAmmopack | – | – | – | – | – | – | MontageartRadial THT | Endurance 2000 | Rippelstrom2890 mA | ESR (Serienersatzwiderstand)25 mΩ | Leckstrom329 µA | Raster3.5 mm | Durchmesser8 mm | – | – | – | – | ||||
 | WE-LHMI SMT Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-LHMI SMT Speicherdrossel | – | – | – | Bauform7030 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | Länge7.3 mm | Breite6.6 mm | Höhe2.8 mm | – | – | Induktivität0.22 µH | Performance Nennstrom23 A | Sättigungsstrom 129.9 A | Sättigungsstrom @ 30%54.3 A | Gleichstromwiderstand2.8 mΩ | Eigenresonanzfrequenz149 MHz | MontageartSMT | – | – | – | – | – | – | Pins2 | – | – | – | ||||
 | WR-PHD Stiftleisten - Einreihig, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten - Einreihig | – | – | – | – | Betriebstemperatur -40 °C up to +105 °C | – | Isolationswiderstand1000 MΩ | – | Länge7.62 mm | – | – | – | VerpackungBeutel | – | – | – | – | – | – | MontageartTHT | – | – | – | – | Raster2.54 mm | – | Pins3 | TypGerade | Nennstrom3 A | Arbeitsspannung250 V (AC) | |||
 | WR-PHD Stiftleisten - Einreihig, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten - Einreihig | – | – | – | – | Betriebstemperatur -40 °C up to +105 °C | – | Isolationswiderstand1000 MΩ | – | Länge10.16 mm | – | – | – | VerpackungBeutel | – | – | – | – | – | – | MontageartTHT | – | – | – | – | Raster2.54 mm | – | Pins4 | TypGerade | Nennstrom3 A | Arbeitsspannung250 V (AC) |