General Description

The TC1267 is an application-specific, low dropout regulator (LDO), specifically intended for use in PCI peripheral card applications complying with PCI Power Management (PCI 2.0). It provides an uninterrupted, 3.3V output voltage when the main (5V) or auxiliary (3.3V) input voltage supplies are present.

Features

• Glitch Free Transition Between Input Sources

• Automatic Input Source Selection

• External PMOS Bypass Switch Control

• Built-in 5V Detector

• 1% Regulated Output Voltage Accuracy

• 400mA Load Current Capability

• Kelvin Sense Input

• Low Ground Current, Independent of Load

Applications

• PCMCIA

• PCI

• Network Interface Cards (NICs)

• Cardbus^TM Technology

• Desktop Computers