LP38859 - Texas Instruments

LP38859 3-A Fast-Response High-Accuracy LDO Linear Regulator

The LP38859 is a high-current, fast-response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides voltage to drive the gate of the N-MOS power transistor, while VIN is the input voltage which supplies power to the load..

Features

•1 Input Voltage: 1.1 V to 5.5 V
• Wide VBIAS Supply Operating Range: 3 V to 5.5 V
• Standard VOUT Values: 0.8 V and 1.2 V
• Stable With 10-µF Ceramic Capacitors
• Dropout Voltage of 240 mV (typical) at 3-A Load Current
• Programmable Soft-Start Time
• Precision Output Voltage Across All Line and Load Conditions:
  – ±1% VOUT for TJ = 25°C
  – ±2% VOUT for 0°C ≤ TJ ≤ +125°C
  – ±3% VOUT for
  –40°C ≤ TJ ≤ +125°C
• Overtemperature and Overcurrent Protection
• Operating Temperature Range: −40°C to +125°C 2 Applications
• ASIC Power Supplies In:
  – Desktops, Notebooks, Graphics Cards, and Servers
  – Gaming.