REG101UA-5/2K5G4 Description
The REG101 is a family of low-noise, low-dropout linear regulators with low ground pin current. Its new DMOS topology provides a significant improvement over previous designs, including low dropout voltage (only 60mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate for and require expensive low ESR capacitors greater than 1μF. The typical ground pin current is only 500μA (at IOUT = 100mA) and drops to 10nA when not in enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variation and under dropout conditions.
REG101UA-5/2K5G4 Features
NEW DMOS TOPOLOGY:
Ultra Low Dropout Voltage:
60mV typ at 100mA
Output capacitor NOT required for stability
FAST TRANSIENT RESPONSE
VERY LOW NOISE: 23μVrms
HIGH ACCURACY: ±1.5% max
HIGH EFFICIENCY:
IGND = 500μA at IOUT = 100mA
Not Enabled: IGND = 10nA
2.5V, 2.8V, 2.85V, 3.0V, 3.3V, 5.0V, AND
ADJUSTABLE OUTPUT VERSIONS
OTHER OUTPUT VOLTAGES AVAILABLE
UPON REQUEST
FOLDBACK CURRENT LIMIT
THERMAL PROTECTION
SMALL SURFACE-MOUNT PACKAGES:
SOT23-5 and SO-8
REG101UA-5/2K5G4 Applications
PORTABLE COMMUNICATION DEVICES
BATTERY-POWERED EQUIPMENT
PERSONAL DIGITAL ASSISTANTS
MODEMS
BAR-CODE SCANNERS
BACKUP POWER SUPPLIES
