IC-Hersteller Microchip
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Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 3-5.5 V |
| Ausgang 1 | 5.5 V / 5 A |
| IC-Revision | 0.1 |
Beschreibung
The LX7219 is a digitally controlled step-down regulator IC with an integrated 22mΩ high-side P-channel MOSFET and a 13mΩ low-side N-channel MOSFET. It features Microsemi’s proprietary constant-frequency hysteretic control engine for near-instantaneous correction to sudden line/load transients. It does not require high-ESR output capacitors and incorporates energy-saving “PSM” (Power Saving or Pulse Skip Mode) at light loads, to extend battery life in mobile applications.The LX7219 has an I2C serial interface port for output voltage margining and monitoring if required (it can operate in default mode too). It includes robust fault monitoring functions.The LX7219 will operate from 2.7V to 5.5V, and is available in several fixed output voltage options from 0.9V to 0.8V (no voltage divider is necessary). Each version’s output voltage can also be made adjustable with use of an external voltage divider.
Eigenschaften
- Constant Frequency Hysteretic Control
- Extremely Fast Line/Load Transient Response
- I2C for Output Adjustment (3.4Mbps)
- 1.2MHz Switching Frequency
- Extremely Low-RDSON MOSFETS
- Input Voltage Rail 2.6V to 5.5V, Current 6A
- Programmable 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
- LCD TV's
- Notebook/ Netbook
- High Performance HDD/Server and Workstations/Video Cards
- PoE Powered Devices
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 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-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 | – | – | Induktivität0.33 µH | Performance Nennstrom17.8 A | Sättigungsstrom 127.1 A | Sättigungsstrom @ 30%47 A | Gleichstromwiderstand3.9 mΩ | Eigenresonanzfrequenz124 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) |