Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
AP2128
Electrical Characteristics (Continued)
(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.)
Parameter
Output Voltage
Input Voltage
Maximum Output Current
Current Limit
Load Regulation
Line Regulation
Symbol
V
OUT
V
IN
I
OUT(MAX)
I
LIMIT
∆V
OUT
/(∆I
OUT*
V
OUT
)
∆V
OUT
/(∆V
IN
*V
OUT
)
V
IN
-V
OUT
=1V,
V
OUT
=98%×V
OUT
V
IN
-V
OUT
=1V
V
IN
-V
OUT
=1V,
1mA≤I
OUT
≤300mA
V
OUT
+0.5V≤V
IN
≤6V,
I
OUT
=30mA
V
OUT
=2.5V, 2.8V, 3.0V, 3.3V,
3.9V, 4.2V, I
OUT
=300mA
V
OUT
=4.75V and 5.2V,
I
OUT
=300mA
V
IN
=V
OUT
+1V, I
OUT
=0mA
V
IN
=V
OUT
+1V,
V
SHUTDOWN
in off mode
AP2128-2.5V to f=100Hz
4.2V, Ripple
f=1KHz
1Vp-p
V
IN
=V
OUT
+1V f=10KHz
Power Supply
Rejection Ratio
f=100Hz
AP2128-4.75V ,
Ripple 0.5Vp-p f=1KHz
V
IN
=V
OUT
+1V
f=10KHz
AP2128-5.2V ,
Ripple 0.5Vp-p
V
IN
=6V
Output Voltage
Temperature Coefficient
Short Current Limit
(∆V
OUT
/V
OUT
)
/∆T
I
SHORT
f=100Hz
f=1KHz
f=10KHz
170
140
60
0.1
68
68
54
63
63
45
63
63
45
dB
Conditions
V
IN
=V
OUT
+1V
1mA≤I
OUT
≤300mA
Min
98%×
V
OUT
2.5
300
400
450
0.6
0.06
300
mV
300
90
1.0
µA
µA
Typ
Max
102%×
V
OUT
6
Unit
V
V
mA
mA
%/A
%/V
Dropout Voltage
V
DROP
Quiescent Current
Standby Current
I
Q
I
STD
PSRR
I
OUT
=30mA, -40
o
C≤T
A
≤85
o
C
V
OUT
=0V
±
100
50
ppm/
o
C
mA
Oct. 2009 Rev. 1.8
8
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
