GENERAL DESCRIPTION

The SGM2078 is a low input voltage, low noise, 1.2V

logic supporting and low dropout voltage linear

regulator. It is capable of supplying 300mA output

current with typical dropout voltage of only 190mV. The

operating input voltage range is from 1.6V to 5.5V. The

output voltage range is from 0.8V to 3.3V in fixed

output versions. For adjustable output version, the

output voltage can be adjusted from 0.8V to 5.0V by

using external resistors.

Other features include 1.2V logic-controlled shutdown

mode, short-circuit current limit and thermal shutdown

protection. The SGM2078 has automatic discharge

function to quickly discharge VOUT in the disabled status.

The SGM2078 is available in Green XTDFN-1×1-4L,

SOT-23-5 and SC70-5 packages. It operates over an

operating temperature range of -40℃ to +125℃.

FEATURES

 Operating Input Voltage Range: 1.6V to 5.5V

 Enable Pin Accept Voltages Higher than the

Supply Voltage and up to 5.5V

 Fixed Output from 0.8V to 3.3V

 Adjustable Output from 0.8V to 5.0V

 300mA Output Current

 Low Supply Pin Current: 37μA (TYP)

 Low Dropout Voltage:

190mV (TYP) at 300mA, VOUT = 3.0V

 Shutdown Supply Current: 0.75μA (TYP)

 Current Limiting and Thermal Protection

 Excellent Load and Line Transient Responses

 Short Start-Up Time

 1.2V Logic Level Enable Control

 With Output Automatic Discharge

 Stable with Small Case Size Ceramic Capacitors

 -40℃ to +125℃ Operating Temperature Range

 Available in Green XTDFN-1×1-4L, SOT-23-5 and

SC70-5 Packages

APPLICATIONS

Modems

Cellular Telephones

PCMCIA Cards

Palmtop Computers

Portable Electronics