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LX7176A

4A Step-Down-Regulator

Status: In Production

Features:

  • 0-4A Step-down Regulator
  • Operational Input Supply Voltage Range: 3V-5.5V (short durations to 6.5V.)
  • Hysteretic control offers best transient response
  • CCM switching at a constant 1.65MHz
  • Automatically switches to DCM switching under light loads to improve efficiency
  • 100% Duty Ratio Operation
  • Input under voltage and over voltage protection
  • Enable and Power Good Function
  • Internal soft-start
  • Cycle-by-Cycle Over Current Protection
  • Hiccup Mode protects against short circuit faults
  • RoHS Compliant
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The LX7176A is a 4A step-down regulator with integrated MOSFETs packaged in a space saving QFN12 2mm x 2mm for today’s mobile devices. It uses an ultra fast, constant frequency hysteretic control method to minimize external filter components while maintaining excellent regulation. The LX7176A reference voltage is 0.6V. The LX7176A operates from 3V to 5.5V rails and outputs 0.6V to 100% of the input voltage. Cycle-by-cycle current limiting protects against overcurrent conditions. Hiccup mode provides protection for heavy over-load or short-circuit faults. Thermal protection shuts down the regulator under overtemperature conditions. Over voltage conditions will immediately shut off the output to protect against permanent damage. The LX7176A automatically restarts when all fault conditions are cleared. Internal soft start circuitry limits start up inrush currents.

Additional Features
  • 0-4A Step-down Regulator
  • Operational Input Supply Voltage Range: 3V-5.5V (short durations to 6.5V.)
  • Hysteretic control offers best transient response
  • CCM switching at a constant 1.65MHz
  • Automatically switches to DCM switching under light loads to improve efficiency
  • 100% Duty Ratio Operation
  • Input under voltage and over voltage protection
  • Enable and Power Good Function
  • Internal soft-start
  • Cycle-by-Cycle Over Current Protection
  • Hiccup Mode protects against short circuit faults
  • RoHS Compliant
Parametrics
Name
Value
# of Outputs
1
Input Voltage Range Min (V)
3.0-5.5
Input Voltage Range Max (V)
7
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
3.3
Output Current (mA) max
3
Switching Frequency (kHz)
1650
Synchronous Rectifier
Yes
Operating Temp Range
0 to 85
Vfb (V)
0.6
Duty Cycle Max (%)
100
Light Load Efficiency Mode
Pulse Skip
Switch current (A) typ
7.4

Documents

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Data Sheets

  
1662KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
LX7176ACLQ-TR
0.010400
0.000000
12
VQFN
2x2x1.0mm
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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