
Union Semiconductor, Inc.
General Description
The UM4750 series are dual channel VLDO (very low dropout) linear regulators designed for low power portable applications. The range of output voltage is from 1.2V to 5.0V while operated from 2.5V to 5.5V input. Typical output noise is only 200μVRMS and maximum dropout is just 200mV at the load current of 100mA.
FEATUREs
● Very Low Dropout: 200mV (Max) at 100mA
● Maximum Input Voltage: 5.5V
● Low Noise:200μVRMS (10Hz to 100kHz)
● Fast Transient Response
● Dual LDO Outputs (300mA/300mA)
● Output Current Limit
● Stable with 1μF Output Capacitor
● Thermal Overload Protection
● Low Profile SOT23-6, 6-Lead DFN 2.0×2.0
and 8-Lead DFN 3.0×3.0 Packages
APPLICATIONs
● Bluetooth/802.11 Cards
● PDAs and Notebook Computers
● Portable Instruments and
Battery-Powered Systems
● Cellular Phones