AMS6211 Datasheet, PDF (1/5 Pages) Advanced Monolithic Systems Ltd – LOW ESR CAPS COMPATIBLE HIGH SPEED LDO VOLTAGE REGULATOR

AMS6211
■GENERAL DESCRIPTION
The AMS6211 series is a high accuracy, low noise, high speed, low dropout CMOS regulator with high ripple rejection.The series
includes a reference voltage source, an error amplifier, a current limiter, and a phase compensation circuit.
The CE function enables the entire circuit to be in stand-by state by inputting low level signal. As for the AMS6211 stand-by
mode, the electric charge at the output capacitor (C_L) will be discharged by the internal auto-discharge switch, and as a result
the V_OUT pin quickly returns to the V_SS level. The output stabilization capacitor (C_L) is also compatible with low ESR ceramic
capacitors.
Output voltage is selectable in 0.1V increments within a range of 1.2V~5.0V, using the laser trimming technology set in
factory.
The current limiter's fold-back circuit also operates as a short circuit protection and an output current limiter at the output pin.
The series achieves a fast response with only 50μA of low power consumption. Also the series has low dropout voltage
characteristics, which is 100mV at I_OUT=100mA .
APPLICATIONS
●Cellular phones
●Cordless phones
●Wireless communication equipment
●Portable games
●Cameras, VCRs
●Portable AV equipment
●PDAs
■FEATURES
Maximum Output Current : 500mA (TYP.)
Dropout Voltage
Operating Voltage Range
: 100mV@ I_OUT=100mA
: 2V ~ 6.5V
Output Voltage Range
: 1.2V~5.0V
Accuracy
Low Power Consumption
Stand-by Current
High Ripple Rejection
CE Function
Stand-by Current
: + 2% (Standard)
: 50uA (TYP.)
: 0.1uA (TYP)
: 70dB @ 1kHz
: CE Active High
: Less than 0.1μA
Low ESR Capacitor
Low Output Noise
: 50uVrms
Packages
Environmentally Friendly
: SOT23-5
: EU RoHS Compliant, Pb Free
Operating Ambient Temperature : -40℃~+85℃
■TYPICAL APPLICATION CIRCUIT
1
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