SGM2028 Datasheet, PDF (1/12 Pages) SG Micro Corp – 500mA Ultra Low Dropout Low Power, RF Linear Regulators

SGM2028
500mA, Ultra Low Dropout,
Low Power, RF Linear Regulators
GENERAL DESCRIPTION
The SGM2028 is a low-power, low-noise, low-dropout,
CMOS linear voltage regulator that operates from a 2.5V
to 5.5V input voltage. It is the perfect choice for low
voltage, low power applications. A low ground current
makes this part attractive for battery operated power
systems. The SGM2028 also offers ultra low dropout
voltage to prolong battery life in portable electronics.
Systems requiring a quiet voltage source, such as RF
applications, will benefit from the SGM2028’s ultra low
output noise (30µV_RMS) and high PSRR. An external
noise bypass capacitor connected to the device’s BP pin
can further reduce the noise level.
Other features include output current limit and thermal
shutdown protection.
The SGM2028 is available in Green SOT-23-5 package.
It operates over an ambient temperature range of -40°C
to +85°C.
FEATURES
 500mA Guaranteed Output Current
 Ultra Low Dropout Voltage
 Low Output Noise
 Thermal-Overload Protection
 Output Current Limit
 High PSRR (73dB at 1kHz)
 SGM2028-2.8 and SGM2028-ADJ:
110kΩ Pull Down Resistor at EN Pin
 SGM2028-3.3: No Pull Down Resistor at EN Pin
 Available Fixed Output Voltages: 2.8V and 3.3V
 Adjustable Output from 1.2V to 5.0V
 -40℃ to +85℃ Operating Temperature Range
 Available in Green SOT-23-5 Package
APPLICATIONS
Cellular Telephones
Cordless Telephones
PCMCIA Cards
Modems
MP3 Player
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Portable/Battery-Powered Equipment
SG Micro Corp
www.sg-micro.com
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