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LX7219

Synchronous Buck Regulator with I2C

Status: In Production

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
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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
Parametrics
Name
Value
# of Outputs
1
Input Voltage Range Min (V)
2.7-5.5
Input Voltage Range Max (V)
7
Output Voltage Range Min (V)
0.6
Output Voltage Range Max (V)
3.3
Output Current (mA) max
6
Switching Frequency (kHz)
1200
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 85
Vfb (V)
0.6
Duty Cycle Max (%)
100
Light Load Efficiency Mode
Pulse Skip
Switch current (A) typ
8.5

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Data Sheets

  
1173KB

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
LX7219-01ILQ-TR
0.000000
0.000000
14
VQFN
2x3x1.0mm
Matte Tin
e3
LX7219-02ILQ-TR
0.000000
0.000000
14
VQFN
2x3x1.0mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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