REG103UA-2.7/2K5                               DESCRIPTION

The REG103 is a family of low-noise, low-dropout, linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 115mV 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 and require expensive low ESR capacitors greater than 1μF

REG103UA-2.7/2K5                               FEATURES

● NEW DMOS TOPOLOGY:

Ultra Low Dropout Voltage:

115mV Typ at 500mA and 3.3V Output

Output Capacitor NOT Required for Stability

● FAST TRANSIENT RESPONSE

● VERY LOW NOISE: 33μVrms

● HIGH ACCURACY: ±2% max

● HIGH EFFICIENCY:

IGND = 1mA at IOUT = 500mA

Not Enabled: IGND = 0.5μA

● 2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE

OUTPUT VERSIONS

● FOLDBACK CURRENT LIMIT

● THERMAL PROTECTION

● OUTPUT VOLTAGE ERROR INDICATOR(1)

● SMALL SURFACE-MOUNT PACKAGES:

SOT223-5, DDPAK-5, SO-8

REG103UA-2.7/2K5                               APPLICATIONS

● PORTABLE COMMUNICATION DEVICES

● BATTERY-POWERED EQUIPMENT

● PERSONAL DIGITAL ASSISTANTS

● MODEMS

● BAR-CODE SCANNERS

● BACKUP POWER SUPPLIES