The LX7219 is a digitally controlled step-down regulator IC with an integrated 22 mΩ high-side P-channel MOSFET and a 13 mΩ low-side N-channel MOSFET. It features Microsemi's proprietary constant frequency hysteretic control engine for near-instantaneous correction to line/load transients for a voltage range of 2.7 V to 5.5 V, and 6 A constant frequency. It does not require high-ESR output capacitors and incorporates energy-saving power save or pulse skip mode (PSM) at light loads, to extend battery life in mobile applications. The LX7219 has an I C serial interface port for output voltage 2 margining and monitoring, if required (it can also operate in default mode). In addition it includes robust fault monitoring functions. The LX7219 is available in 0.9 V single slave address and 0.8 V default output voltage (no voltage divider is necessary) with four slave addresses. The output voltage can be adjusted with an external voltage divider up to 3.3 V.
Additional Features
Constant frequency hysteretic control
Extremely fast line/load transient response
I2C for output adjustment (3.4 Mbps)
1.2 MHz switching frequency
Extremely low-RDSON MOSFETS
Input voltage rail 2.7 V to 5.5 V
Greater than 6 A output current
Power save mode for light-load efficiency
UVLO, OVP, and OCP
–40 °C to 85 °C ambient temperature
Available in VQFN 2mm x 3mm 14L package
RoHS Compliant
The LX7219 is a digitally controlled step-down regulator IC with an integrated 22 mΩ high-side P-channel MOSFET and a 13 mΩ low-side N-channel MOSFET. It features Microsemi's proprietary constant frequency hysteretic control engine for near-instantaneous correction to line/load transients for a voltage range of 2.7 V to 5.5 V, and 6 A constant frequency. It does not require high-ESR output capacitors and incorporates energy-saving power save or pulse skip mode (PSM) at light loads, to extend battery life in mobile applications. The LX7219 has an I C serial interface port for output voltage 2 margining and monitoring, if required (it can also operate in default mode). In addition it includes robust fault monitoring functions. The LX7219 is available in 0.9 V single slave address and 0.8 V default output voltage (no voltage divider is necessary) with four slave addresses. The output voltage can be adjusted with an external voltage divider up to 3.3 V.
Additional Features
- Constant frequency hysteretic control
- Extremely fast line/load transient response
- I2C for output adjustment (3.4 Mbps)
- 1.2 MHz switching frequency
- Extremely low-RDSON MOSFETS
- Input voltage rail 2.7 V to 5.5 V
- Greater than 6 A output current
- Power save mode for light-load efficiency
- UVLO, OVP, and OCP
- –40 °C to 85 °C ambient temperature
- Available in VQFN 2mm x 3mm 14L package
- RoHS Compliant
