GENERAL DEscriptION

The SGM2028 is a low dropout voltage, low power and low noise RF linear regulator. It is capable of supplying 500mA output current with typical dropout voltage of only 270mV. The operating input voltage range is from 2.5V to 5.5V.

Other features include logic-controlled shutdown mode, short-circuit current limit and thermal shutdown protection.

The SGM2028 is available in a Green SOT-23-5 package. It operates over an operating temperature range of -40℃ to +85℃.

FEATURES

• Operating Input Voltage Range: 2.5V to 5.5V

• Fixed Output Voltages: 2.8V, 3.0V, 3.3V

• Adjustable Output Voltage Range: 1.2V to 5.0V

• 500mA Guaranteed Output Current

• Output Voltage Accuracy: ±3% at +25℃

• High PSRR: 73dB (TYP) at 1kHz

• Ultra-Low Dropout Voltage: 270mV (TYP) at 500mA

• Low Output Noise: 30μVRMS (TYP)

• Thermal Shutdown Protection

• Output Current Limit

• SGM2028-2.8, SGM2028-3.0 and SGM2028-ADJ: 110kΩ Pull Down Resistor at EN Pin

• SGM2028-3.3: No Pull Down Resistor at EN Pin

• -40℃ to +85℃ Operating Temperature Range

• Available in a Green SOT-23-5 Package

APPLICATIONS

Modems

MP3 Players

Cellular Telephones

PCMCIA Cards

Palmtop Computers

Portable Electronics