AMS AMS6221

AMS6221
■GENERAL DESCRIPTION
The AMS6221 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 AMS6221 stand-by
mode, the electric charge at the output capacitor (CL) will be discharged by the internal auto-discharge switch, and as a result
the VOUT pin quickly returns to the VSS level. The output stabilization capacitor (CL) is also compatible with low ESR ceramic
capacitors.
Output voltage is selectable in 0.1V increments within a range of 2.0V~5.00V, 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 45μA of low power consumption. Also the series has low dropout voltage
characteristics, which is 200mV at IOUT=100mA .
■FEATURES
APPLICATIONS
●Cellular phones
●Cordless phones
●Wireless communication equipment
●Portable games
●Cameras, VCRs
●Portable AV equipment
●PDAs
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Accuracy
Low Power Consumption
Stand-by Current
High Ripple Rejection
CE Function
Stand-by Current
High Ripple Rejection
Low ESR Capacitor
Low Output Noise
Packages
Environmentally Friendly
Operating Ambient Temperature
■TYPICAL APPLICATION CIRCUIT
Advanced Monolithic Systems
http://www.ams-semitech.com
: 300mA (TYP.)
: [email protected] IOUT=100mA
: < 8V
: 2.0V~5.0V
: + 2% (Standard)
: 45uA (TYP.)
: Less than 1uA
: 70dB @ 1kHz
: CE Active High
: Less than 0.1μA
: 70dB @ 1kHz
: SOT23-5
: EU RoHS Compliant, Pb Free
: -40℃~+85℃
AMS6221
■PIN CONFIGURATION
VOUT
NC
5
4
1
2
3
VIN
Vss
CE
SOT23-5
(TOP VIEW)
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTIONS
1
VIN
Power Input
5
VOUT
Output
2
VSS
Ground
3
CE
ON/OFF Control
4
NC
No Connection
SOT23-5
PIN NAME
CE
DESIGNATOR
CONDITIONS
H
1.2V≦VCE≦6.0V
L
VCE≦0.3V
■ BLOCK DIAGRAMS
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS6221
■ ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage VIN
Iout
Output Current
Output Voltage
Power
SOT23
Dissipation SOT89
Operating Temperature
Storage Temperature
Soldering Temp & Time
Vout
RATINGS
8
UNITS
V
500
mA
Vss-0.3 ~ Vout+0.3
V
Pd
300
mW
Pd
500
mW
TOpr
-25 ~ +85
℃
Tstg
-40 ~ +125
℃
Tsolder
260℃, 10s
■ ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Output Voltage
VOUT(E)
(Note 2)
IOUT=40mA,
VIN=Vout+1V
X 0.98
VOUT (T)
X 1.02
V
7.0
V
(Note 1)
Input Voltage VIN
Maximum
Output Current
Load Regulation
Dropout Voltage
(Note 3)
Quiescent Current
CE Low Level Current
Line Regulation
IOUTmax
∆VOUT
Vdif1
Vdif2
ISS
ICEL
∆VOUT
∆VIN • VOUT
Output Noise en
PSRR
VIN=Vout+1V
300
mA
VIN=Vout+1V,
1mA≤IOUT≤100mA
IOUT =100mA
30
mV
200
mV
IOUT =200mA
400
mV
VIN=Vout+1V
45
μA
Vce=0V
0.1
μA
IOUT =40mA
Vout+1V ≤VIN≤8V
0.05
%/V
50
uVrms
70
dB
IOUT =40mA,
300Hz~50kHz
Vin= [Vout+1]V
+1Vp-pAC
IOUT =40mA,f=1kHz
注 :
1. VOUT (T) :Nominal output voltage
2. VOUT (E) :Effective output voltage
3. Vdif :VIN1 –VOUT (E)’
VIN1 is the input voltage when VOUT1 appears at the VOUT pin while input voltage is gradually decreased. VOUT (E)’ is the voltage equal to 98% of the normal output voltage when amply stabilized VOUT (T) +1.0V are input at the VIN pin.
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS6221
■PACKAGING INFORMATION
●SOT23-5
(unit : mm)
Symbol
A
mm
MIN
-
TYPE
-
MAX
1.25
A1
0
-
0.15
A2
A3
b
b1
c
c1
D
E
E1
e
e1
L
L1
L2
R
R1
θ
θ1
θ2
1.00
0.60
0.36
0.36
0.14
0.14
2.826
2.60
1.526
1.10
0.65
0.38
0.15
2.926
2.80
1.626
0.95BSC
1.90BSC
0.45
0.59REF
0.25BSC
5°
8°
1.20
0.70
0.50
0.45
0.20
0.16
3.026
3.00
1.726
0.35
0.10
0.10
0°
3°
6°
Advanced Monolithic Systems
0.60
0.25
8°
7°
10°
http://www.ams-semitech.com
AMS6221
Advanced Monolithic Systems
http://www.ams-semitech.com