General Description
The EM1109BV performs ultra- low drop voltage,
high power supply rejection ratio (PSRR), fast
response, low noise linear regulator, and designed
to continuously deliver up to 1A output current.
The EM1109BV has wide adjustable output voltage
range and high output accuracy to 1.0%.
No by-pass capacitor is needed for this device and
only 4.7uF ceramic capacitor is required for stability
in any loading conditions. It reduces the amount of
board space necessary for power applications.
The other features include soft start, current limit
protection, Power-On-Reset function, and over
temperature protection. The EM1109BV is available
in DFN3X3-08L package.

Features
 Wide VIN Range from 2.5V to 5.5V
 Adjustable Output Voltage from 1V to 4.5V
 Fixed Option: 1V,1.2V,1.5V,1.8V,2.5V to 3.3V
 Ultra Low Dropout Voltage: 450mV @1A
 Low Shutdown Current < 1uA
 Only 4.7uF Ceramic Capacitor required for
stability
 Over Temperature Protection
 Current Limit Protection
 RoHS Compliant and 100% Lead (Pb)-Free

Applications
 Cellular Handsets
 Battery-Powered Equipment
 Laptop, Palmtops, Notebook Computers
 Hand-Held Instruments
 PCMCIA Cards
 Portable Information Applications