GENERAL DEscriptION

The SGM2045LC is an ultra-low noise, low VIN, high PSRR and low dropout voltage linear regulator. It is capable of supplying 300mA output current with typical dropout voltage of only 100mV. The operating input voltage range is from 1.8V to 5.5V and output voltages are 1.2V, 1.8V and 2.8V.

Other features include logic-controlled shutdown mode, short-circuit current limit and thermal shutdown protection. The SGM2045LC has automatic discharge function to discharge VOUT in the disabled status.

The SGM2045LC is suitable for applications which need low noise and fast transient response power supply, such as power supply of camera module in smart phone, etc.

The SGM2045LC is available in a Green XTDFN-1×1-4L package. It operates over an operating temperature range of -40℃ to +125℃.

FEATURES

• Operating Input Voltage Range: 1.8V to 5.5V

• Fixed Output Voltage Options: 1.2V, 1.8V, 2.8V

• 300mA Output Current

• Output Voltage Accuracy: ±1% at +25℃

• Low Current: 15μA (TYP)

• Low Dropout Voltage: 100mV (TYP) at 300mA when VOUT = 1.8V

• Ultra-Low Noise: 9.5μVRMS (TYP)

• High PSRR: 92dB (TYP) at 1kHz

• Low Start-Up Current

• Current Limiting and Thermal Protection

• Excellent Load and Line Transient Responses

• With Output Automatic Discharge

• Stable with Small Case Size Ceramic Capacitors

• Shutdown Supply Current: 0.03μA (TYP)

• -40℃ to +125℃ Operating Temperature Range

• Available in a Green XTDFN-1×1-4L Package

APPLICATIONS

Portable Electronic Devices

Smoke Detectors

IP Cameras

Wireless LAN Devices

Battery-Powered Equipment

Smartphones and Tablets

Digital Cameras and Audio Devices