Microchip LX7178 | Demoboard LX7178

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

• Datenblatt
• Produktseite des IC-Herstellers