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300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128
Data Sheet
8
Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing Limited
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage
V
OUT
V
IN
=V
OUT
+1V
1mAI
OUT
300mA
98%×
V
OUT
102%×
V
OUT
V
Input Voltage V
IN
2.5 6 V
Maximum Output Current
I
OUT(MAX)
V
IN
-V
OUT
=1V,
V
OUT
=98%×V
OUT
300 400 mA
Current Limit
I
LIMIT
V
IN
-V
OUT
=1V
450 mA
Load Regulation
V
OUT
/(I
OUT*
V
OUT
)
V
IN
-V
OUT
=1V,
1mAI
OUT
300mA
0.6 %/A
Line Regulation
V
OUT
/(V
IN
*V
OUT
)
V
OUT
+0.5VV
IN
6V,
I
OUT
=30mA
0.06 %/V
Dropout Voltage
V
DROP
V
OUT
=2.5V, 2.8V, 3.0V, 3.3V,
3.9V, 4.2V, I
OUT
=300mA
170 300
mV
V
OUT
=4.75V and 5.2V,
I
OUT
=300mA
140 300
Quiescent Current I
Q
V
IN
=V
OUT
+1V, I
OUT
=0mA 60 90 µA
Standby Current
I
STD
V
IN
=V
OUT
+1V,
V
SHUTDOWN
in off mode
0.1 1.0 µA
Power Supply
Rejection Ratio
PSRR
AP2128-2.5V to
4.2V, Ripple
1Vp-p
V
IN
=V
OUT
+1V
f=100Hz 68
dB
f=1KHz 68
f=10KHz 54
AP2128-4.75V ,
Ripple 0.5Vp-p
V
IN
=V
OUT
+1V
f=100Hz 63
f=1KHz 63
f=10KHz 45
AP2128-5.2V ,
Ripple 0.5Vp-p
V
IN
=6V
f=100Hz 63
f=1KHz 63
f=10KHz 45
Output Voltage
Temperature Coefficient
(V
OUT
/V
OUT
)
/T
I
OUT
=30mA,
-40
o
C
T
A
85
o
C
±100
ppm/
o
C
Short Current Limit I
SHORT
V
OUT
=0V 50 mA
(AP2128-2.5V/2.8V/3.0V/3.3V/3.9V/4.2V/4.75V, V
IN
=V
OUT
+1V; AP2128-5.2V, V
IN
=6V, C
IN
=1µF, C
OUT
=1µF,
Bold type-
face applies over
-40
o
C
T
A
85
o
C,
unless otherwise specified.)
Electrical Characteristics (Continued)
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