LX7219 Series

Synchronous Buck Regulator with I2C

Catalog

Synchronous Buck Regulator with I2C

Part	Voltage - Output (Min/Fixed)	Synchronous Rectifier	Output Type	Package / Case	Operating Temperature (Max)	Operating Temperature (Min)	Frequency - Switching	Topology	Output Configuration	Mounting Type	Voltage - Input (Max)	Voltage - Output (Max)	Number of Outputs	Current - Output	Package Name	Package Width	Package Length	Voltage - Input (Min)	Function
Microchip Technology LX7219-01ILQ-TR	0.75 V	Yes	Adjustable	14-PowerVFQFN	85 °C	-40 °C	1.2 MHz	Buck	Positive	Surface Mount	5.5 V	5.5 V	1	6 A	14-VQFN	3 mm	2 mm	2.7 V	Step-Down
Microchip Technology LX7219-02ILQ-TR	0.75 V	Yes	Adjustable	14-PowerVFQFN	85 °C	-40 °C	1.2 MHz	Buck	Positive	Surface Mount	5.5 V	5.5 V	1	6 A	14-VQFN	3 mm	2 mm	2.7 V	Step-Down

Catalog

Synchronous Buck Regulator with I2C

Description

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.