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LX7220

Microchip
Part Number LX7220
Manufacturer Microchip
Description 6A Constant Frequency Hysteretic Synchronous Buck Regulator
Published Jan 21, 2024
Detailed Description LX7220 2.7V to 5.5V, 6A Constant Frequency Hysteretic Synchronous Buck Regulator with I2C Features • Constant Frequenc...
Datasheet PDF File LX7220 PDF File

LX7220
LX7220

Overview
LX7220 2.
7V to 5.
5V, 6A Constant Frequency Hysteretic Synchronous Buck Regulator with I2C 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.
7V to 5.
5V • Greater than 6A Output Current • Default Power Save Mode for Light-Load Efficiency • UVLO, OVP, OCP • -40°C to +85°C Ambient Temperature • Available in VQFN 2 mm x 3 mm 14-Lead Package • RoHS Compliant Applications • High Performance HDD • Solid-State Drive • Data Center Applications • Raid/Host Bus Adaptors • Optical Transceivers Package Types LX7220 Top View 14-Lead, VQFN, 2 mm x 3 mm PG 1 SDA 2 GND 3 SW 4 VIN 5 AVIN SCL 14 13 GND VIN VIN 6 7 12 VOUT 11 AGND 10 EN 9 SW 8 VIN General Description LX7220 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 Microchip 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.
LX7220 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.
LX7220 will operate from 2.
7V to 5.
5V and is available in 0.
95V or 0.
9V output voltages (no voltage divider is necessary).
The output voltage can also be adjusted with an input voltage of 5V and external voltage divider up to 3.
3V.
LX7220 Bottom View 14-Lead, VQFN, 2 mm x 3 mm VOUT 12 AGND 11 EN 10 SW 9 VIN 8 SCL AVIN 13 14 GND VIN VIN 7 6 1 PG 2 SDA 3 GND 4 SW 5 VIN  2022 Microchip Technology Inc.
and its subsidiaries DS20006704A-page 1 LX7220 Functional Block Diagram OCP Bandgap Refe...


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