GENERAL DEscriptION

The SGM2211 a low noise, high PSRR, fast transient response, and low dropout voltage linear regulator which is designed using CMOS technology. It provides 500mA output current capability. The operating input voltage range is from 2.7V to 20V. The adjustable output voltage range is from 1.2V to (VIN - VDROP).

Other features include logic-controlled shutdown mode, short-circuit current limit and thermal shutdown protection. The SGM2211 has automatic discharge function to discharge VOUT in the disabled status.

The SGM2211 is available in Green TDFN-2×2-6AL and SOT-23-5 packages. It operates over an operating temperature range of -40℃ to +125℃.

FEATURES

• Operating Input Voltage Range: 2.7V to 20V

• Fixed Outputs of 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.8V, 4.2V and 5.0V

• Adjustable Output from 1.2V to (VIN - VDROP)

  (For TDFN Package, Output Voltage can be Adjusted above Initial Fixed Output Voltage)

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

• Low Current: 39μA (TYP)

• Low Dropout Voltage: 360mV (TYP) at 500mA Load when VOUT = 5.0V

• Low Noise:

  9.3μVRMS at VOUT = 1.2V

  11μVRMS at VOUT = 2.8V

  14μVRMS at VOUT = 5.0V

• PSRR (VIN = VOUT(NOM) + 1V):

  100dB at 1kHz

  83dB at 10kHz

  52dB at 100kHz

  55dB at 1MHz

• Current Limiting and Thermal Protection

• Excellent Load and Line Transient Responses

• With Output Automatic Discharge

• Stable with Small Case Size Ceramic Capacitors

• Programmable Soft-Start (TDFN Package Only)

• Shutdown Supply Current: 1.2μA (TYP)

• Reverse Current Protection when VOUT > VIN

• Foldback Current-Limit Protection when VOUT is Shorted to GND

• Programmable Precision Enable

• -40℃ to +125℃ Operating Temperature Range

• Available in Green TDFN-2×2-6AL and SOT-23-5 Packages

APPLICATIONS

Instrumentation

Precision ADC and DAC

Precision Amplifiers in Industrial E

Low Noise VCO

RF System

Medical E