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 quickly 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 Quiescent 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 Equipment
Low Noise VCO
RF System
Medical Equipment