IC-Hersteller Microchip

IC-Hersteller (95)

Microchip LX7178 | Demoboard LX7178

Details

TopologieAbwärtswandler
Eingangsspannung3-5.5 V
Ausgang 10.8 V / 5 A
IC-Revision0.1

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 ProduktserieCTol. CVR
(V (DC))
BauformBetriebstemperaturDF
(%)
RISOKeramiktypL
(mm)
W
(mm)
Fl
(mm)
L
(µH)
IRP,40K
(A)
ISAT1
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
MontageartEndurance
(h)
BetriebstemperaturIRIPPLE
(mA)
RESR
(mΩ)
ILeak
(µA)
Raster
(mm)
Ø D
(mm)
PinsReihenH
(mm)
GenderTypIR
(A)
Verpackung Muster
885012207022SPEC
8 Dateien WCAP-CSGP MLCCs 10 V(DC)1 µF ±10% 10 0805 -55 °C up to +125 °C 50.5 GΩ X7R Klasse II 2 1.25 0.5 1.25 7" Tape & Reel
885012107005SPEC
8 Dateien WCAP-CSGP MLCCs 6.3 V(DC)22 µF ±20% 6.3 0805 -55 °C up to +85 °C 100.005 GΩ X5R Klasse II 2 1.25 0.5 1.25 7" Tape & Reel
885012107011SPEC
8 Dateien WCAP-CSGP MLCCs 10 V(DC)22 µF ±20% 10 0805 -55 °C up to +85 °C 100.005 GΩ X5R Klasse II 2 1.25 0.5 1.25 7" Tape & Reel
870055674005SPEC
7 Dateien WCAP-PTHR Aluminium-Polymer-Kondensatoren47 µF ±20% 35 12 11.5 Radial THT 2000 -55 °C bis zu +105 °C 2890 25 329 3.5 8 Ammopack
744373460022SPEC
8 Dateien WE-LHMI SMT Speicherdrossel 7030 -40 °C up to +125 °C 7.3 6.6 0.22 23 29.9 54.3 2.8 149 SMT 2 2.8
61300311121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header -40 °C up to +105 °C1000 MΩ 7.62 THT 2.54 3 Single Pin Header Gerade 3 Beutel
61300411121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header -40 °C up to +105 °C1000 MΩ 10.16 THT 2.54 4 Single Pin Header Gerade 3 Beutel
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieCTol. CVR
(V (DC))
BauformBetriebstemperaturDF
(%)
RISOKeramiktypL
(mm)
W
(mm)
Fl
(mm)
L
(µH)
IRP,40K
(A)
ISAT1
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
MontageartEndurance
(h)
BetriebstemperaturIRIPPLE
(mA)
RESR
(mΩ)
ILeak
(µA)
Raster
(mm)
Ø D
(mm)
PinsReihenH
(mm)
GenderTypIR
(A)
Verpackung Muster